1238 lines
49 KiB
C#
1238 lines
49 KiB
C#
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using NPOI.HSSF.UserModel;
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using NPOI.SS.Formula.Eval;
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using NPOI.SS.UserModel;
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using NPOI.SS.Util;
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using NPOI.XSSF.UserModel;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Data;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Windows.Forms;
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namespace JinYuan.Helper
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{
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public class ExcelHelper
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{
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#region 1.从DataTable/List导出到excel文件中，支持xls和xlsx格式
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/// <summary>
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/// DataTable导出到Excel文件
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/// </summary>
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/// <param name="dtSource">数据源</param>
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/// <param name="strHeaderText">表名</param>
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/// <param name="strFileName">excel文件名</param>
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/// <param name="dir">datatable和excel列名对应字典</param>
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/// <param name="sheetRow">每个sheet存放的行数</param>
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public static void DataTableToExcel(DataTable dtSource, string strHeaderText, string strFileName, Dictionary<string, string> dir, bool isNew, int sheetRow = 50000)
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{
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int currentSheetCount = GetSheetNumber(strFileName);//现有的页数sheetnum
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if (sheetRow <= 0)
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{
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sheetRow = dtSource.Rows.Count;
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}
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string[] temp = strFileName.Split('.');
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string fileExtens = temp[temp.Length - 1];
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int sheetCount = (int)Math.Ceiling((double)dtSource.Rows.Count / sheetRow);//sheet数目
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if (temp[temp.Length - 1] == "xls" && dtSource.Columns.Count < 256 && sheetRow < 65536)
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{
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if (isNew)
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{
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currentSheetCount = 0;
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}
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for (int i = currentSheetCount; i < currentSheetCount + sheetCount; i++)
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{
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DataTable pageDataTable = dtSource.Clone();
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int hasRowCount = dtSource.Rows.Count - sheetRow * (i - currentSheetCount) < sheetRow ? dtSource.Rows.Count - sheetRow * (i - currentSheetCount) : sheetRow;
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for (int j = 0; j < hasRowCount; j++)
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{
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pageDataTable.ImportRow(dtSource.Rows[(i - currentSheetCount) * sheetRow + j]);
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}
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using (MemoryStream ms = ExportDataTable(strFileName, pageDataTable, strHeaderText, dir, i))
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{
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using (FileStream fs = new FileStream(strFileName, FileMode.Create, FileAccess.Write))
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{
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byte[] data = ms.ToArray();
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fs.Write(data, 0, data.Length);
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fs.Flush();
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}
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}
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}
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}
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else
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{
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if (temp[temp.Length - 1] == "xls")
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strFileName = strFileName + "x";
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if (isNew)
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{
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currentSheetCount = 0;
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}
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for (int i = currentSheetCount; i < currentSheetCount + sheetCount; i++)
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{
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DataTable pageDataTable = dtSource.Clone();
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int hasRowCount = dtSource.Rows.Count - sheetRow * (i - currentSheetCount) < sheetRow ? dtSource.Rows.Count - sheetRow * (i - currentSheetCount) : sheetRow;
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for (int j = 0; j < hasRowCount; j++)
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{
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pageDataTable.ImportRow(dtSource.Rows[(i - currentSheetCount) * sheetRow + j]);
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}
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FileStream readfs = new FileStream(strFileName, FileMode.OpenOrCreate, FileAccess.Read);
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MemoryStream readfsm = new MemoryStream();
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readfs.CopyTo(readfsm);
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readfs.Close();
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using (FileStream writefs = new FileStream(strFileName, FileMode.Create, FileAccess.Write))
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{
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ExportDataTable(pageDataTable, strHeaderText, writefs, readfsm, dir, i);
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}
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readfsm.Close();
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}
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}
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}
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/// <summary>
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/// 将List集合导出到Excel文件
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="list"></param>
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/// <param name="strHeaderText"></param>
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/// <param name="strFileName"></param>
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/// <param name="dir"></param>
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/// <param name="isNew"></param>
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/// <param name="sheetRow"></param>
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public static void ListToExcel<T>(List<T> list, string strHeaderText, string strFileName, Dictionary<string, string> dir, bool isNew, int sheetRow = 50000)
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{
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DataTable dataTable = ListToDataTable<T>(list);
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DataTableToExcel(dataTable, strHeaderText, strFileName, dir, isNew, sheetRow);
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}
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/// <summary>
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/// 导出为xls文件内部方法
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/// </summary>
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/// <param name="strFileName">excel文件名</param>
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/// <param name="dtSource">datatabe源数据</param>
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/// <param name="strHeaderText">表名</param>
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/// <param name="sheetnum">sheet的编号</param>
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/// <returns></returns>
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private static MemoryStream ExportDataTable(string strFileName, DataTable dtSource, string strHeaderText, Dictionary<string, string> dir, int sheetnum)
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{
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//创建工作簿和sheet
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IWorkbook workbook = new HSSFWorkbook();
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using (Stream writefile = new FileStream(strFileName, FileMode.OpenOrCreate, FileAccess.Read))
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{
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if (writefile.Length > 0 && sheetnum > 0)
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{
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workbook = WorkbookFactory.Create(writefile);
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}
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}
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ISheet sheet = null;
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ICellStyle dateStyle = workbook.CreateCellStyle();
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IDataFormat format = workbook.CreateDataFormat();
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dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
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int[] arrColWidth = new int[dtSource.Columns.Count];
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foreach (DataColumn item in dtSource.Columns)
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{
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arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length;
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}
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for (int i = 0; i < dtSource.Rows.Count; i++)
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{
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for (int j = 0; j < dtSource.Columns.Count; j++)
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{
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int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length;
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if (intTemp > arrColWidth[j])
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{
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arrColWidth[j] = intTemp;
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}
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}
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}
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int rowIndex = 0;
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foreach (DataRow row in dtSource.Rows)
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{
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#region 新建表，填充表头，填充列头，样式
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if (rowIndex == 0)
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{
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string sheetName = strHeaderText + (sheetnum == 0 ? "" : sheetnum.ToString());
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if (workbook.GetSheetIndex(sheetName) >= 0)
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{
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workbook.RemoveSheetAt(workbook.GetSheetIndex(sheetName));
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}
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sheet = workbook.CreateSheet(sheetName);
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#region 表头及样式
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{
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sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
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IRow headerRow = sheet.CreateRow(0);
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headerRow.HeightInPoints = 25;
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headerRow.CreateCell(0).SetCellValue(strHeaderText);
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ICellStyle headStyle = workbook.CreateCellStyle();
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headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = 20;
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font.IsBold = true;
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headStyle.SetFont(font);
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headerRow.GetCell(0).CellStyle = headStyle;
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rowIndex = 1;
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}
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#endregion
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#region 列头及样式
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if (rowIndex == 1)
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{
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IRow headerRow = sheet.CreateRow(1);//第二行设置列名
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ICellStyle headStyle = workbook.CreateCellStyle();
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headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = 10;
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font.IsBold = true;
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headStyle.SetFont(font);
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//写入列标题
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foreach (DataColumn column in dtSource.Columns)
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{
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headerRow.CreateCell(column.Ordinal).SetCellValue(dir[column.ColumnName]);
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headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
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//设置列宽
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sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256 * 2);
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}
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rowIndex = 2;
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}
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#endregion
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}
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#endregion
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#region 填充内容
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IRow dataRow = sheet.CreateRow(rowIndex);
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foreach (DataColumn column in dtSource.Columns)
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{
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ICell newCell = dataRow.CreateCell(column.Ordinal);
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string drValue = row[column].ToString();
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switch (column.DataType.ToString())
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{
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case "System.String": //字符串类型
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double result;
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if (isNumeric(drValue, out result))
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{
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//数字字符串
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double.TryParse(drValue, out result);
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newCell.SetCellValue(result);
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break;
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}
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else
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{
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newCell.SetCellValue(drValue);
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break;
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}
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case "System.DateTime": //日期类型
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DateTime dateV;
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DateTime.TryParse(drValue, out dateV);
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newCell.SetCellValue(dateV);
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newCell.CellStyle = dateStyle; //格式化显示
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break;
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case "System.Boolean": //布尔型
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bool boolV = false;
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bool.TryParse(drValue, out boolV);
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newCell.SetCellValue(boolV);
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break;
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case "System.Int16": //整型
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case "System.Int32":
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case "System.Int64":
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case "System.Byte":
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int intV = 0;
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int.TryParse(drValue, out intV);
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newCell.SetCellValue(intV);
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break;
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case "System.Decimal": //浮点型
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case "System.Double":
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double doubV = 0;
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double.TryParse(drValue, out doubV);
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newCell.SetCellValue(doubV);
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break;
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case "System.DBNull": //空值处理
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newCell.SetCellValue("");
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break;
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default:
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newCell.SetCellValue(drValue.ToString());
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break;
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}
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}
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#endregion
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rowIndex++;
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}
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using (MemoryStream ms = new MemoryStream())
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{
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workbook.Write(ms);
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ms.Flush();
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ms.Position = 0;
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return ms;
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}
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}
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/// <summary>
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/// 导出为xlsx文件内部方法
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/// </summary>
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/// <param name="dtSource">datatable数据源</param>
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/// <param name="strHeaderText">表名</param>
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/// <param name="fs">文件流</param>
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/// <param name="readfs">内存流</param>
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/// <param name="sheetnum">sheet索引</param>
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private static void ExportDataTable(DataTable dtSource, string strHeaderText, FileStream fs, MemoryStream readfs, Dictionary<string, string> dir, int sheetnum)
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{
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IWorkbook workbook = new XSSFWorkbook();
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if (readfs.Length > 0 && sheetnum > 0)
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{
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workbook = WorkbookFactory.Create(readfs);
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}
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ISheet sheet = null;
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ICellStyle dateStyle = workbook.CreateCellStyle();
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IDataFormat format = workbook.CreateDataFormat();
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dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
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//取得列宽
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int[] arrColWidth = new int[dtSource.Columns.Count];
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foreach (DataColumn item in dtSource.Columns)
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{
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arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length;
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}
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for (int i = 0; i < dtSource.Rows.Count; i++)
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{
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for (int j = 0; j < dtSource.Columns.Count; j++)
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{
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int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length;
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if (intTemp > arrColWidth[j])
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{
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arrColWidth[j] = intTemp;
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}
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}
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}
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int rowIndex = 0;
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foreach (DataRow row in dtSource.Rows)
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{
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#region 新建表，填充表头，填充列头，样式
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if (rowIndex == 0)
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{
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#region 表头及样式
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{
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string sheetName = strHeaderText + (sheetnum == 0 ? "" : sheetnum.ToString());
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if (workbook.GetSheetIndex(sheetName) >= 0)
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{
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workbook.RemoveSheetAt(workbook.GetSheetIndex(sheetName));
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}
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sheet = workbook.CreateSheet(sheetName);
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sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
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IRow headerRow = sheet.CreateRow(0);
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headerRow.HeightInPoints = 25;
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headerRow.CreateCell(0).SetCellValue(strHeaderText);
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ICellStyle headStyle = workbook.CreateCellStyle();
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headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = 20;
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font.IsBold = true;
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headStyle.SetFont(font);
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headerRow.GetCell(0).CellStyle = headStyle;
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}
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#endregion
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#region 列头及样式
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{
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IRow headerRow = sheet.CreateRow(1);
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ICellStyle headStyle = workbook.CreateCellStyle();
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headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
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IFont font = workbook.CreateFont();
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font.FontHeightInPoints = 10;
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font.IsBold = true;
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headStyle.SetFont(font);
|
||
|
|
|
||
|
|
|
||
|
|
foreach (DataColumn column in dtSource.Columns)
|
||
|
|
{
|
||
|
|
headerRow.CreateCell(column.Ordinal).SetCellValue(dir[column.ColumnName]);
|
||
|
|
headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
|
||
|
|
//设置列宽
|
||
|
|
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256 * 2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
rowIndex = 2;
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region 填充内容
|
||
|
|
IRow dataRow = sheet.CreateRow(rowIndex);
|
||
|
|
foreach (DataColumn column in dtSource.Columns)
|
||
|
|
{
|
||
|
|
ICell newCell = dataRow.CreateCell(column.Ordinal);
|
||
|
|
string drValue = row[column].ToString();
|
||
|
|
switch (column.DataType.ToString())
|
||
|
|
{
|
||
|
|
case "System.String": //字符串类型
|
||
|
|
double result;
|
||
|
|
if (isNumeric(drValue, out result))
|
||
|
|
{
|
||
|
|
|
||
|
|
double.TryParse(drValue, out result);
|
||
|
|
newCell.SetCellValue(result);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
newCell.SetCellValue(drValue);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case "System.DateTime": //日期类型
|
||
|
|
DateTime dateV;
|
||
|
|
DateTime.TryParse(drValue, out dateV);
|
||
|
|
newCell.SetCellValue(dateV);
|
||
|
|
|
||
|
|
newCell.CellStyle = dateStyle; //格式化显示
|
||
|
|
break;
|
||
|
|
case "System.Boolean": //布尔型
|
||
|
|
bool boolV = false;
|
||
|
|
bool.TryParse(drValue, out boolV);
|
||
|
|
newCell.SetCellValue(boolV);
|
||
|
|
break;
|
||
|
|
case "System.Int16": //整型
|
||
|
|
case "System.Int32":
|
||
|
|
case "System.Int64":
|
||
|
|
case "System.Byte":
|
||
|
|
int intV = 0;
|
||
|
|
int.TryParse(drValue, out intV);
|
||
|
|
newCell.SetCellValue(intV);
|
||
|
|
break;
|
||
|
|
case "System.Decimal": //浮点型
|
||
|
|
case "System.Double":
|
||
|
|
double doubV = 0;
|
||
|
|
double.TryParse(drValue, out doubV);
|
||
|
|
newCell.SetCellValue(doubV);
|
||
|
|
break;
|
||
|
|
case "System.DBNull": //空值处理
|
||
|
|
newCell.SetCellValue("");
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
newCell.SetCellValue(drValue.ToString());
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
rowIndex++;
|
||
|
|
}
|
||
|
|
workbook.Write(fs);
|
||
|
|
fs.Close();
|
||
|
|
}
|
||
|
|
|
||
|
|
private static DataTable ListToDataTable<T>(IEnumerable<T> collection)
|
||
|
|
{
|
||
|
|
var props = typeof(T).GetProperties();
|
||
|
|
|
||
|
|
var dt = new DataTable();
|
||
|
|
|
||
|
|
dt.Columns.AddRange(props.Select(p => new DataColumn(p.Name, p.PropertyType)).ToArray());
|
||
|
|
|
||
|
|
if (collection.Count() > 0)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < collection.Count(); i++)
|
||
|
|
{
|
||
|
|
ArrayList tempList = new ArrayList();
|
||
|
|
|
||
|
|
foreach (PropertyInfo pi in props)
|
||
|
|
{
|
||
|
|
object obj = pi.GetValue(collection.ElementAt(i), null);
|
||
|
|
tempList.Add(obj);
|
||
|
|
}
|
||
|
|
|
||
|
|
object[] array = tempList.ToArray();
|
||
|
|
|
||
|
|
dt.LoadDataRow(array, true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return dt;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 判断内容是否是数字
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="message"></param>
|
||
|
|
/// <param name="result"></param>
|
||
|
|
/// <returns></returns>
|
||
|
|
private static bool isNumeric(String message, out double result)
|
||
|
|
{
|
||
|
|
Regex rex = new Regex(@"^[-]?\d+[.]?\d*$");
|
||
|
|
result = -1;
|
||
|
|
if (rex.IsMatch(message))
|
||
|
|
{
|
||
|
|
result = double.Parse(message);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 获取excel文件的sheet数目
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="outputFile"></param>
|
||
|
|
/// <returns></returns>
|
||
|
|
private static int GetSheetNumber(string outputFile)
|
||
|
|
{
|
||
|
|
int number = 0;
|
||
|
|
using (FileStream readfile = new FileStream(outputFile, FileMode.OpenOrCreate, FileAccess.Read))
|
||
|
|
{
|
||
|
|
if (readfile.Length > 0)
|
||
|
|
{
|
||
|
|
IWorkbook wb = WorkbookFactory.Create(readfile);
|
||
|
|
number = wb.NumberOfSheets;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return number;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
|
||
|
|
#region 2.从excel文件中将数据导出到DataTable/List
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 读取Excel文件特定名字sheet的内容到DataTable
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="strFileName">excel文件路径</param>
|
||
|
|
/// <param name="sheet">需要导出的sheet</param>
|
||
|
|
/// <param name="HeaderRowIndex">列头所在行号，-1表示没有列头</param>
|
||
|
|
/// <param name="dir">excel列名和DataTable列名的对应字典</param>
|
||
|
|
/// <returns></returns>
|
||
|
|
public static DataTable ExcelToDataTable(string strFileName, Dictionary<string, string> dir, string SheetName, int HeaderRowIndex = 1)
|
||
|
|
{
|
||
|
|
DataTable table = new DataTable();
|
||
|
|
using (FileStream file = new FileStream(strFileName, FileMode.Open, FileAccess.Read))
|
||
|
|
{
|
||
|
|
if (file.Length > 0)
|
||
|
|
{
|
||
|
|
IWorkbook wb = WorkbookFactory.Create(file);
|
||
|
|
ISheet isheet = wb.GetSheet(SheetName);
|
||
|
|
table = ImportExcel(isheet, HeaderRowIndex, dir);
|
||
|
|
isheet = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return table;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 读取Excel文件某一索引sheet的内容到DataTable
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="strFileName">excel文件路径</param>
|
||
|
|
/// <param name="sheet">需要导出的sheet序号</param>
|
||
|
|
/// <param name="HeaderRowIndex">列头所在行号，-1表示没有列头</param>
|
||
|
|
/// <param name="dir">excel列名和DataTable列名的对应字典</param>
|
||
|
|
/// <returns></returns>
|
||
|
|
public static DataTable ExcelToDataTable(string strFileName, Dictionary<string, string> dir, int SheetIndex = 0, int HeaderRowIndex = 1)
|
||
|
|
{
|
||
|
|
DataTable table = new DataTable();
|
||
|
|
using (FileStream file = new FileStream(strFileName, FileMode.Open, FileAccess.Read))
|
||
|
|
{
|
||
|
|
if (file.Length > 0)
|
||
|
|
{
|
||
|
|
IWorkbook wb = WorkbookFactory.Create(file);
|
||
|
|
ISheet isheet = wb.GetSheetAt(SheetIndex);
|
||
|
|
table = ImportExcel(isheet, HeaderRowIndex, dir);
|
||
|
|
isheet = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return table;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 读取Excel文件特定名字sheet的内容到List集合
|
||
|
|
/// </summary>
|
||
|
|
/// <typeparam name="T"></typeparam>
|
||
|
|
/// <param name="strFileName"></param>
|
||
|
|
/// <param name="dir"></param>
|
||
|
|
/// <param name="SheetName"></param>
|
||
|
|
/// <param name="HeaderRowIndex"></param>
|
||
|
|
/// <returns></returns>
|
||
|
|
public static List<T> ExcelToList<T>(string strFileName, Dictionary<string, string> dir, string SheetName, int HeaderRowIndex = 1)
|
||
|
|
{
|
||
|
|
DataTable dataTable = ExcelToDataTable(strFileName, dir, SheetName, HeaderRowIndex);
|
||
|
|
|
||
|
|
return DataTableToList<T>(dataTable);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 读取Excel文件某一索引sheet的内容到List集合
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="strFileName">excel文件路径</param>
|
||
|
|
/// <param name="sheet">需要导出的sheet序号</param>
|
||
|
|
/// <param name="HeaderRowIndex">列头所在行号，-1表示没有列头</param>
|
||
|
|
/// <param name="dir">excel列名和DataTable列名的对应字典</param>
|
||
|
|
/// <returns></returns>
|
||
|
|
public static List<T> ExcelToList<T>(string strFileName, Dictionary<string, string> dir, int SheetIndex, int HeaderRowIndex = 1)
|
||
|
|
{
|
||
|
|
DataTable dataTable = ExcelToDataTable(strFileName, dir, SheetIndex, HeaderRowIndex);
|
||
|
|
|
||
|
|
return DataTableToList<T>(dataTable);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 将制定sheet中的数据导出到datatable中
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="sheet">需要导出的sheet</param>
|
||
|
|
/// <param name="HeaderRowIndex">列头所在行号，-1表示没有列头</param>
|
||
|
|
/// <param name="dir">excel列名和DataTable列名的对应字典</param>
|
||
|
|
/// <returns></returns>
|
||
|
|
private static DataTable ImportExcel(ISheet sheet, int HeaderRowIndex, Dictionary<string, string> dir)
|
||
|
|
{
|
||
|
|
DataTable table = new DataTable();
|
||
|
|
IRow headerRow;
|
||
|
|
int cellCount;
|
||
|
|
try
|
||
|
|
{
|
||
|
|
//没有标头或者不需要表头用excel列的序号（1,2,3..）作为DataTable的列名
|
||
|
|
if (HeaderRowIndex < 0)
|
||
|
|
{
|
||
|
|
headerRow = sheet.GetRow(0);
|
||
|
|
cellCount = headerRow.LastCellNum;
|
||
|
|
|
||
|
|
for (int i = headerRow.FirstCellNum; i <= cellCount; i++)
|
||
|
|
{
|
||
|
|
DataColumn column = new DataColumn(Convert.ToString(i));
|
||
|
|
table.Columns.Add(column);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//有表头，使用表头做为DataTable的列名
|
||
|
|
else
|
||
|
|
{
|
||
|
|
headerRow = sheet.GetRow(HeaderRowIndex);
|
||
|
|
cellCount = headerRow.LastCellNum;
|
||
|
|
for (int i = headerRow.FirstCellNum; i < cellCount; i++)
|
||
|
|
{
|
||
|
|
//如果excel某一列列名不存在：以该列的序号作为Datatable的列名，如果DataTable中包含了这个序列为名的列，那么列名为重复列名+序号
|
||
|
|
if (headerRow.GetCell(i) == null)
|
||
|
|
{
|
||
|
|
if (table.Columns.IndexOf(Convert.ToString(i)) > 0)
|
||
|
|
{
|
||
|
|
DataColumn column = new DataColumn(Convert.ToString("重复列名" + i));
|
||
|
|
table.Columns.Add(column);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
DataColumn column = new DataColumn(Convert.ToString(i));
|
||
|
|
table.Columns.Add(column);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
//excel中的某一列列名不为空，但是重复了：对应的Datatable列名为“重复列名+序号”
|
||
|
|
else if (table.Columns.IndexOf(headerRow.GetCell(i).ToString()) > 0)
|
||
|
|
{
|
||
|
|
DataColumn column = new DataColumn(Convert.ToString("重复列名" + i));
|
||
|
|
table.Columns.Add(column);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
//正常情况，列名存在且不重复：用excel中的列名作为datatable中对应的列名
|
||
|
|
{
|
||
|
|
string colName = dir.Where(s => s.Value == headerRow.GetCell(i).ToString()).First().Key;
|
||
|
|
DataColumn column = new DataColumn(colName);
|
||
|
|
table.Columns.Add(column);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
int rowCount = sheet.LastRowNum;
|
||
|
|
for (int i = (HeaderRowIndex + 1); i <= sheet.LastRowNum; i++)//excel行遍历
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
IRow row;
|
||
|
|
if (sheet.GetRow(i) == null)//如果excel有空行，则添加缺失的行
|
||
|
|
{
|
||
|
|
row = sheet.CreateRow(i);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
row = sheet.GetRow(i);
|
||
|
|
}
|
||
|
|
|
||
|
|
DataRow dataRow = table.NewRow();
|
||
|
|
|
||
|
|
for (int j = row.FirstCellNum; j <= cellCount; j++)//excel列遍历
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
if (row.GetCell(j) != null)
|
||
|
|
{
|
||
|
|
switch (row.GetCell(j).CellType)
|
||
|
|
{
|
||
|
|
case CellType.String://字符串
|
||
|
|
string str = row.GetCell(j).StringCellValue;
|
||
|
|
if (str != null && str.Length > 0)
|
||
|
|
{
|
||
|
|
dataRow[j] = str.ToString();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dataRow[j] = default(string);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CellType.Numeric://数字
|
||
|
|
if (DateUtil.IsCellDateFormatted(row.GetCell(j)))//时间戳数字
|
||
|
|
{
|
||
|
|
dataRow[j] = DateTime.FromOADate(row.GetCell(j).NumericCellValue);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dataRow[j] = Convert.ToDouble(row.GetCell(j).NumericCellValue);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CellType.Boolean:
|
||
|
|
dataRow[j] = Convert.ToString(row.GetCell(j).BooleanCellValue);
|
||
|
|
break;
|
||
|
|
case CellType.Error:
|
||
|
|
dataRow[j] = ErrorEval.GetText(row.GetCell(j).ErrorCellValue);
|
||
|
|
break;
|
||
|
|
case CellType.Formula://公式
|
||
|
|
switch (row.GetCell(j).CachedFormulaResultType)
|
||
|
|
{
|
||
|
|
case CellType.String:
|
||
|
|
string strFORMULA = row.GetCell(j).StringCellValue;
|
||
|
|
if (strFORMULA != null && strFORMULA.Length > 0)
|
||
|
|
{
|
||
|
|
dataRow[j] = strFORMULA.ToString();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dataRow[j] = null;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CellType.Numeric:
|
||
|
|
dataRow[j] = Convert.ToString(row.GetCell(j).NumericCellValue);
|
||
|
|
break;
|
||
|
|
case CellType.Boolean:
|
||
|
|
dataRow[j] = Convert.ToString(row.GetCell(j).BooleanCellValue);
|
||
|
|
break;
|
||
|
|
case CellType.Error:
|
||
|
|
dataRow[j] = ErrorEval.GetText(row.GetCell(j).ErrorCellValue);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
dataRow[j] = "";
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
dataRow[j] = "";
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (Exception ex)
|
||
|
|
{
|
||
|
|
throw ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
table.Rows.Add(dataRow);
|
||
|
|
}
|
||
|
|
catch (Exception ex)
|
||
|
|
{
|
||
|
|
throw ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (Exception ex)
|
||
|
|
{
|
||
|
|
throw ex;
|
||
|
|
}
|
||
|
|
return table;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
private static List<T> DataTableToList<T>(DataTable table)
|
||
|
|
{
|
||
|
|
if (table == null)
|
||
|
|
{
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
List<DataRow> rows = new List<DataRow>();
|
||
|
|
|
||
|
|
foreach (DataRow row in table.Rows)
|
||
|
|
{
|
||
|
|
rows.Add(row);
|
||
|
|
}
|
||
|
|
|
||
|
|
return ConvertTo<T>(rows);
|
||
|
|
}
|
||
|
|
|
||
|
|
private static List<T> ConvertTo<T>(IList<DataRow> rows)
|
||
|
|
{
|
||
|
|
List<T> list = null;
|
||
|
|
if (rows != null)
|
||
|
|
{
|
||
|
|
|
||
|
|
list = new List<T>();
|
||
|
|
foreach (DataRow row in rows)
|
||
|
|
{
|
||
|
|
T item = CreateItem<T>(row);
|
||
|
|
list.Add(item);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
return list;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
private static T CreateItem<T>(DataRow row)
|
||
|
|
{
|
||
|
|
T obj = default(T);
|
||
|
|
|
||
|
|
if (row != null)
|
||
|
|
{
|
||
|
|
obj = Activator.CreateInstance<T>();
|
||
|
|
|
||
|
|
foreach (DataColumn column in row.Table.Columns)
|
||
|
|
|
||
|
|
{
|
||
|
|
PropertyInfo prop = obj.GetType().GetProperty(column.ColumnName);
|
||
|
|
|
||
|
|
try
|
||
|
|
{
|
||
|
|
object value = row[column.ColumnName];
|
||
|
|
|
||
|
|
SetObjectPropertyValue(obj, column.ColumnName, value.ToString());
|
||
|
|
}
|
||
|
|
|
||
|
|
catch (Exception ex)
|
||
|
|
{
|
||
|
|
throw ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// 通过属性名称设置值
|
||
|
|
/// </summary>
|
||
|
|
/// <typeparam name="T">对象类型</typeparam>
|
||
|
|
/// <param name="obj">对象</param>
|
||
|
|
/// <param name="propertyName">属性名称</param>
|
||
|
|
/// <param name="value">值</param>
|
||
|
|
/// <returns>是否成功</returns>
|
||
|
|
private static bool SetObjectPropertyValue<T>(T obj, string propertyName, string value)
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
Type type = typeof(T);
|
||
|
|
|
||
|
|
object t = Convert.ChangeType(value, type.GetProperty(propertyName).PropertyType);
|
||
|
|
|
||
|
|
type.GetProperty(propertyName).SetValue(obj, t, null);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
|
||
|
|
}
|
||
|
|
catch (Exception ex)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region Excel导入导出到DataGridView
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// DataGridView导出到Excel
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="filePath"></param>
|
||
|
|
/// <param name="dataGridView"></param>
|
||
|
|
/// <param name="isAppend"></param>
|
||
|
|
/// <returns></returns>
|
||
|
|
public static bool DataGridViewToExcel(string filePath, DataGridView dataGridView, bool isAppend = false)
|
||
|
|
{
|
||
|
|
if (isAppend)
|
||
|
|
{
|
||
|
|
return DataGridViewToExcelAdd(filePath, dataGridView);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return DataGridViewToExcelNew(filePath, dataGridView);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------【函数：将表格控件保存至Excel文件(新建/替换)】------------
|
||
|
|
|
||
|
|
//filePath要保存的目标Excel文件路径名
|
||
|
|
//datagGridView要保存至Excel的表格控件
|
||
|
|
//------------------------------------------------------------------------
|
||
|
|
private static bool DataGridViewToExcelNew(string filePath, DataGridView dataGridView)
|
||
|
|
{
|
||
|
|
bool result = true;
|
||
|
|
|
||
|
|
FileStream fs = null;//创建一个新的文件流
|
||
|
|
HSSFWorkbook workbook = null;//创建一个新的Excel文件
|
||
|
|
ISheet sheet = null;//为Excel创建一张工作表
|
||
|
|
|
||
|
|
//定义行数、列数、与当前Excel已有行数
|
||
|
|
int rowCount = dataGridView.RowCount;//记录表格中的行数
|
||
|
|
int colCount = dataGridView.ColumnCount;//记录表格中的列数
|
||
|
|
|
||
|
|
//判断文件夹是否存在
|
||
|
|
if (CheckAndCreatPath(DecomposePathAndName(filePath, DecomposePathEnum.PathOnly)) == "error")
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
//创建工作表
|
||
|
|
try
|
||
|
|
{
|
||
|
|
fs = new FileStream(filePath, FileMode.Create, FileAccess.Write);
|
||
|
|
workbook = new HSSFWorkbook();
|
||
|
|
sheet = workbook.CreateSheet("Sheet1");
|
||
|
|
IRow row = sheet.CreateRow(0);
|
||
|
|
for (int j = 0; j < colCount; j++) //列循环
|
||
|
|
{
|
||
|
|
if (dataGridView.Columns[j].Visible && dataGridView.Rows[0].Cells[j].Value != null)
|
||
|
|
{
|
||
|
|
ICell cell = row.CreateCell(j);//创建列
|
||
|
|
cell.SetCellValue(dataGridView.Columns[j].HeaderText.ToString());//更改单元格值
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 0; i < rowCount; i++) //行循环
|
||
|
|
{
|
||
|
|
//防止行数超过Excel限制
|
||
|
|
if (i >= 65536)
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
IRow row = sheet.CreateRow(1 + i); //创建行
|
||
|
|
for (int j = 0; j < colCount; j++) //列循环
|
||
|
|
{
|
||
|
|
if (dataGridView.Columns[j].Visible && dataGridView.Rows[i].Cells[j].Value != null)
|
||
|
|
{
|
||
|
|
ICell cell = row.CreateCell(j);//创建列
|
||
|
|
cell.SetCellValue(dataGridView.Rows[i].Cells[j].Value.ToString());//更改单元格值
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
try
|
||
|
|
{
|
||
|
|
workbook.Write(fs);
|
||
|
|
}
|
||
|
|
catch
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
finally
|
||
|
|
{
|
||
|
|
if (fs != null)
|
||
|
|
{
|
||
|
|
fs.Close();
|
||
|
|
fs.Dispose();
|
||
|
|
fs = null;
|
||
|
|
}
|
||
|
|
workbook = null;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------【函数：将表格控件保存至Excel文件(添加/新建)】------------
|
||
|
|
//filePath要保存的目标Excel文件路径名
|
||
|
|
//datagGridView要保存至Excel的表格控件
|
||
|
|
//------------------------------------------------
|
||
|
|
private static bool DataGridViewToExcelAdd(string filePath, DataGridView dataGridView)
|
||
|
|
{
|
||
|
|
bool result = true;
|
||
|
|
|
||
|
|
FileStream fs = null;//创建一个新的文件流
|
||
|
|
HSSFWorkbook workbook = null;//创建一个新的Excel文件
|
||
|
|
ISheet sheet = null;//为Excel创建一张工作表
|
||
|
|
|
||
|
|
//定义行数、列数、与当前Excel已有行数
|
||
|
|
int rowCount = dataGridView.RowCount;//记录表格中的行数
|
||
|
|
int colCount = dataGridView.ColumnCount;//记录表格中的列数
|
||
|
|
int numCount = 0;//Excell最后一行序号
|
||
|
|
|
||
|
|
//判断文件夹是否存在
|
||
|
|
if (CheckAndCreatPath(DecomposePathAndName(filePath, DecomposePathEnum.PathOnly)) == "error")
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
//判断文件是否存在
|
||
|
|
if (!File.Exists(filePath))
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
fs = new FileStream(filePath, FileMode.Create, FileAccess.Write);
|
||
|
|
workbook = new HSSFWorkbook();
|
||
|
|
sheet = workbook.CreateSheet("Sheet1");
|
||
|
|
IRow row = sheet.CreateRow(0);
|
||
|
|
for (int j = 0; j < colCount; j++) //列循环
|
||
|
|
{
|
||
|
|
if (dataGridView.Columns[j].Visible && dataGridView.Rows[0].Cells[j].Value != null)
|
||
|
|
{
|
||
|
|
ICell cell = row.CreateCell(j);//创建列
|
||
|
|
cell.SetCellValue(dataGridView.Columns[j].HeaderText.ToString());//更改单元格值
|
||
|
|
}
|
||
|
|
}
|
||
|
|
workbook.Write(fs);
|
||
|
|
}
|
||
|
|
catch
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
finally
|
||
|
|
{
|
||
|
|
if (fs != null)
|
||
|
|
{
|
||
|
|
fs.Close();
|
||
|
|
fs.Dispose();
|
||
|
|
fs = null;
|
||
|
|
}
|
||
|
|
workbook = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//创建指向文件的工作表
|
||
|
|
try
|
||
|
|
{
|
||
|
|
fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);
|
||
|
|
workbook = new HSSFWorkbook(fs);//.xls
|
||
|
|
sheet = workbook.GetSheetAt(0);
|
||
|
|
if (sheet == null)
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
numCount = sheet.LastRowNum + 1;
|
||
|
|
}
|
||
|
|
catch
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 0; i < rowCount; i++) //行循环
|
||
|
|
{
|
||
|
|
//防止行数超过Excel限制
|
||
|
|
if (numCount + i >= 65536)
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
IRow row = sheet.CreateRow(numCount + i); //创建行
|
||
|
|
for (int j = 0; j < colCount; j++) //列循环
|
||
|
|
{
|
||
|
|
if (dataGridView.Columns[j].Visible && dataGridView.Rows[i].Cells[j].Value != null)
|
||
|
|
{
|
||
|
|
ICell cell = row.CreateCell(j);//创建列
|
||
|
|
cell.SetCellValue(dataGridView.Rows[i].Cells[j].Value.ToString());//更改单元格值
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
try
|
||
|
|
{
|
||
|
|
fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);
|
||
|
|
workbook.Write(fs);
|
||
|
|
}
|
||
|
|
catch
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
finally
|
||
|
|
{
|
||
|
|
if (fs != null)
|
||
|
|
{
|
||
|
|
fs.Close();
|
||
|
|
fs.Dispose();
|
||
|
|
fs = null;
|
||
|
|
}
|
||
|
|
workbook = null;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//------------【函数：从Excel文件读取数据到表格控件】------------
|
||
|
|
//filePath为Excel文件路径名
|
||
|
|
//datagGridView要显示数据的表格控件
|
||
|
|
//------------------------------------------------
|
||
|
|
public static bool ExcelToDataGridView(string filePath, DataGridView dataGridView, bool hastitle = false)
|
||
|
|
{
|
||
|
|
bool result = true;
|
||
|
|
|
||
|
|
FileStream fs = null;//创建一个新的文件流
|
||
|
|
HSSFWorkbook workbook = null;//创建一个新的Excel文件
|
||
|
|
ISheet sheet = null;//为Excel创建一张工作表
|
||
|
|
|
||
|
|
//定义行数、列数
|
||
|
|
int rowCount = 0;//记录Excel中的行数
|
||
|
|
int colCount = 0;//记录Excel中的列数
|
||
|
|
|
||
|
|
//判断文件是否存在
|
||
|
|
if (!File.Exists(filePath))
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
//创建指向文件的工作表
|
||
|
|
try
|
||
|
|
{
|
||
|
|
fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
|
||
|
|
workbook = new HSSFWorkbook(fs);//.xls
|
||
|
|
if (fs != null)
|
||
|
|
{
|
||
|
|
fs.Close();
|
||
|
|
fs.Dispose();
|
||
|
|
fs = null;
|
||
|
|
}
|
||
|
|
sheet = workbook.GetSheetAt(0);
|
||
|
|
if (sheet == null)
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
rowCount = sheet.LastRowNum;
|
||
|
|
colCount = sheet.GetRow(0).LastCellNum;
|
||
|
|
dataGridView.Rows.Clear();
|
||
|
|
dataGridView.Columns.Clear();
|
||
|
|
for (int j = 0; j < colCount; j++) //列循环
|
||
|
|
{
|
||
|
|
ICell cell = sheet.GetRow(0).GetCell(j);//获取列
|
||
|
|
dataGridView.Columns.Add(j.ToString() + cell.ToString(), cell.ToString());
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 1; i <= rowCount; i++) //行循环
|
||
|
|
{
|
||
|
|
IRow row = sheet.GetRow(i); //获取行
|
||
|
|
int index = dataGridView.Rows.Add();
|
||
|
|
colCount = row.LastCellNum;
|
||
|
|
for (int j = 0; j < colCount; j++) //列循环
|
||
|
|
{
|
||
|
|
ICell cell = row.GetCell(j);//获取列
|
||
|
|
dataGridView.Rows[index].Cells[j].Value = cell.ToString();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (Exception ex)
|
||
|
|
{
|
||
|
|
result = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//分解路径用枚举
|
||
|
|
public enum DecomposePathEnum
|
||
|
|
{
|
||
|
|
PathOnly = 0,//仅返回路径
|
||
|
|
NameAndExtension = 1,//返回文件名+扩展名
|
||
|
|
NameOnly = 2,//仅返回文件名
|
||
|
|
ExtensionOnly = 3,//仅返回扩展名(带.)
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------【函数：将文件路径分解】------------
|
||
|
|
|
||
|
|
//filePath文件路径
|
||
|
|
//DecomposePathEnum返回类型
|
||
|
|
//------------------------------------------------
|
||
|
|
private static string DecomposePathAndName(string filePath, DecomposePathEnum decomposePathEnum)
|
||
|
|
{
|
||
|
|
string result = "";
|
||
|
|
switch (decomposePathEnum)
|
||
|
|
{
|
||
|
|
case DecomposePathEnum.PathOnly://仅返回路径
|
||
|
|
result = filePath.Substring(0, filePath.LastIndexOf("\\"));
|
||
|
|
break;
|
||
|
|
case DecomposePathEnum.NameAndExtension://返回文件名+扩展名
|
||
|
|
result = filePath.Substring(filePath.LastIndexOf("\\") + 1);
|
||
|
|
break;
|
||
|
|
case DecomposePathEnum.NameOnly://仅返回文件名
|
||
|
|
result = filePath.Substring(filePath.LastIndexOf("\\") + 1, filePath.LastIndexOf(".") - filePath.LastIndexOf("\\") - 1);
|
||
|
|
break;
|
||
|
|
case DecomposePathEnum.ExtensionOnly://仅返回扩展名(带.)
|
||
|
|
result = filePath.Substring(filePath.LastIndexOf("."));
|
||
|
|
break;
|
||
|
|
default://
|
||
|
|
result = "";
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//------------【函数：判断文件路径是否存在，不存在则创建】------------
|
||
|
|
|
||
|
|
//filePath文件夹路径
|
||
|
|
//DecomposePathEnum返回类型
|
||
|
|
//---------------------------------------------------------------------
|
||
|
|
private static string CheckAndCreatPath(string path)
|
||
|
|
{
|
||
|
|
if (Directory.Exists(path))
|
||
|
|
{
|
||
|
|
return path;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (path.LastIndexOf("\\") <= 0)
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
Directory.CreateDirectory(path);
|
||
|
|
return path;
|
||
|
|
}
|
||
|
|
catch
|
||
|
|
{
|
||
|
|
return "error";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (CheckAndCreatPath(DecomposePathAndName(path, DecomposePathEnum.PathOnly)) == "error")
|
||
|
|
{
|
||
|
|
return "error";
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
Directory.CreateDirectory(path);
|
||
|
|
return path;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|