添加项目文件。

2026-07-14 13:55:17 +08:00
parent 63759495f2
commit 8bbdf78731
335 changed files with 81415 additions and 0 deletions
@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using NPOI;
+using NPOI.HPSF;
+using NPOI.HSSF;
+using NPOI.HSSF.UserModel;
+using NPOI.SS.UserModel;
+using NPOI.POIFS;
+using NPOI.Util;
+using System.IO;
+using System.Data;
+using System.Threading.Tasks;
+
+namespace JY.Infrastructure.Common
+{
+    class ExportXls
+    {
+        /// <summary>
+        /// 由DataTable导出Excel
+        /// </summary>
+        /// <param name="sourceTable">要导出数据的DataTable</param>
+        /// <returns>Excel工作表</returns>
+        public void ExportDataTableToExcel(DataTable sourceTable, string sheetName, string filepath)
+        {
+
+            FileStream file = new FileStream(filepath, FileMode.Create);
+            HSSFWorkbook workbook = new HSSFWorkbook();
+            // MemoryStream ms = new MemoryStream();
+            ISheet sheet = workbook.CreateSheet(sheetName);
+            IRow headerRow = sheet.CreateRow(0);
+            // handling header.
+            foreach (DataColumn column in sourceTable.Columns)
+
+                headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
+            // handling value.
+            int rowIndex = 1;
+            
+                foreach (DataRow row in sourceTable.Rows)
+                {
+                    IRow dataRow = sheet.CreateRow(rowIndex);
+                    foreach (DataColumn column in sourceTable.Columns)
+                    {
+                        dataRow.CreateCell(column.Ordinal).SetCellValue(row[column].ToString());
+                    }
+                    rowIndex++;
+                }
+            
+            workbook.Write(file);
+            file.Close();
+            sheet = null;
+            headerRow = null;
+            workbook = null;
+        }
+
+    }
+}