WPF將DataGrid匯出到Excel表格
阿新 • • 發佈：2019-02-14
將DataGrid轉換成DataTabel，我這裡因為專案的特殊性，這樣轉換，也有其他方法直接轉換。
public void Export(DataGrid dgData, DataTable dataTable, string excelTitle) { DataTable dt = new DataTable(); for (int i = 0; i < dgData.Columns.Count; i++) { if (dgData.Columns[i].Visibility == System.Windows.Visibility.Visible)//只匯出可見列 { dt.Columns..Add(dgData.Columns[i].Header.ToString());//構建表頭 } } for (int i = 0; i < dataTable.Rows.Count; i++) { dt.Rows.Add(dataTable.Rows[i].ItemArray); //新增資料行 } ExcelExport(dt, excelTitle); }
然後可直接呼叫下列函式：
需要的話可自行轉換下表頭。/// <summary> /// datatable表格匯出到Excel /// </summary> /// <param name="DT">datatable表格</param> /// <param name="title">標題字串</param> /// <returns></returns>public string ExcelExport(System.Data.DataTable DT, string title) { try { //建立Excel Microsoft.Office.Interop.Excel.Application ExcelApp = new Microsoft.Office.Interop.Excel.Application(); Microsoft.Office.Interop.Excel.Workbook ExcelBook = ExcelApp.Workbooks.Add(System.Type.Missing); //建立工作表（即Excel裡的子表sheet） 1表示在子表sheet1裡進行資料匯出 Microsoft.Office.Interop.Excel.Worksheet ExcelSheet = (Microsoft.Office.Interop.Excel.Worksheet)ExcelBook.Worksheets[1]; //如果資料中存在數字型別 可以讓它變文字格式顯示 ExcelSheet.Cells.NumberFormat = "@"; //設定工作表名 ExcelSheet.Name = title; //設定Sheet標題 string start = "A1"; string end = ChangeASC(DT.Columns.Count) + "1"; Microsoft.Office.Interop.Excel.Range _Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end); _Range.Merge(0); //單元格合併動作(要配合上面的get_Range()進行設計) _Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end); _Range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter; _Range.Font.Size = 22; //設定字型大小 _Range.Font.Name = "宋體"; //設定字型的種類 ExcelSheet.Cells[1, 1] = title; //Excel單元格賦值 _Range.EntireColumn.AutoFit(); //自動調整列寬 //寫表頭 for (int m = 1; m <= DT.Columns.Count; m++) { ExcelSheet.Cells[2, m] = DT.Columns[m - 1].ColumnName.ToString(); start = "A2"; end = ChangeASC(DT.Columns.Count) + "2"; _Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end); _Range.Font.Size = 14; //設定字型大小 _Range.Font.Name = "宋體"; //設定字型的種類 _Range.EntireColumn.AutoFit(); //自動調整列寬 _Range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter; } //寫資料 for (int i = 0; i < DT.Rows.Count; i++) { for (int j = 1; j <= DT.Columns.Count; j++) { //Excel單元格第一個從索引1開始 // if (j == 0) j = 1; ExcelSheet.Cells[i + 3, j] = DT.Rows[i][j - 1].ToString(); } } //表格屬性設定 for (int n = 0; n < DT.Rows.Count + 1; n++) { start = "A" + (n + 3).ToString(); end = ChangeASC(DT.Columns.Count) + (n + 3).ToString(); //獲取Excel多個單元格區域 _Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end); _Range.Font.Size = 12; //設定字型大小 _Range.Font.Name = "宋體"; //設定字型的種類 _Range.EntireColumn.AutoFit(); //自動調整列寬 _Range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter; //設定字型在單元格內的對其方式 _Range.EntireColumn.AutoFit(); //自動調整列寬 } ExcelApp.DisplayAlerts = false; //儲存Excel的時候，不彈出是否儲存的視窗直接進行儲存 ////彈出儲存對話方塊,並儲存檔案 Microsoft.Win32.SaveFileDialog sfd = new Microsoft.Win32.SaveFileDialog(); sfd.DefaultExt = ".xlsx"; sfd.Filter = "Office 2007 File|*.xlsx|Office 2000-2003 File|*.xls|所有檔案|*.*"; if (sfd.ShowDialog() == true) { if (sfd.FileName != "") { ExcelBook.SaveAs(sfd.FileName); //將其進行儲存到指定的路徑 System.Windows.MessageBox.Show("匯出檔案已儲存為: " + sfd.FileName, "溫馨提示"); } } //釋放可能還沒釋放的程序 ExcelBook.Close(); ExcelApp.Quit(); // PubHelper.Instance.KillAllExcel(ExcelApp); return sfd.FileName; } catch { //System.Windows.MessageBox.Show("匯出檔案儲存失敗,可能原因該檔案已開啟！", "警告！"); return null; } } /// <summary> /// 獲取當前列列名,並得到EXCEL中對應的列 /// </summary> /// <param name="count"></param> /// <returns></returns> private string ChangeASC(int count) { string ascstr = ""; switch (count) { case 1: ascstr = "A"; break; case 2: ascstr = "B"; break; case 3: ascstr = "C"; break; case 4: ascstr = "D"; break; case 5: ascstr = "E"; break; case 6: ascstr = "F"; break; case 7: ascstr = "G"; break; case 8: ascstr = "H"; break; case 9: ascstr = "I"; break; case 10: ascstr = "J"; break; case 11: ascstr = "K"; break; case 12: ascstr = "L"; break; case 13: ascstr = "M"; break; case 14: ascstr = "N"; break; case 15: ascstr = "O"; break; case 16: ascstr = "P"; break; case 17: ascstr = "Q"; break; case 18: ascstr = "R"; break; case 19: ascstr = "S"; break; case 20: ascstr = "T"; break; default: ascstr = "U"; break; } return ascstr; }