如何使用.NET更改XLS列数据types

我正在试图将一个数据表导出到一个xls文件。 以下是我的代码：

using ExcelIt = Microsoft.Office.Interop.Excel; protected void Export2xlsWorkBook(string filename) { if (filename != string.Empty) { if (filename.EndsWith(".xls")) filename = txtNewFileName.Text + ".xls"; } else filename = "NewFile.xls"; filename = "C:\\Documents and Settings\\My Documents\\Exported XLS\\" + filename; ExcelIt.Application objXL = new ExcelIt.Application(); ExcelIt.Workbook oWB; ExcelIt.Worksheet oSheet; ExcelIt.Range oRange; objXL.Visible = true; objXL.DisplayAlerts = false; oWB = objXL.Workbooks.Add(Missing.Value); DataTable dt = CreateDataTable(); oSheet = (ExcelIt.Worksheet)oWB.ActiveSheet; oSheet.Name = "Exported Table"; int rowCount = 1; foreach (DataRow dr in dt.Rows) { rowCount += 1; for (int i = 1; i < dt.Columns.Count + 1; i++) { if (rowCount == 2) { oSheet.Cells[1, i] = dt.Columns[i - 1].ColumnName; } oSheet.Cells[rowCount, i] = dr[i - 1].ToString(); } } oRange = oSheet.get_Range(oSheet.Cells[1, 1], oSheet.Cells[rowCount, dt.Columns.Count]); oRange.EntireColumn.AutoFit(); oRange = oSheet.get_Range(oSheet.Cells[1, 2], oSheet.Cells[rowCount + 10, dt.Columns.Count]); oSheet.Protection.AllowEditRanges.Add("NonePK", oRange, Missing.Value); oRange = oSheet.get_Range(oSheet.Cells[rowCount + 1, 1], oSheet.Cells[rowCount + 10, 1]); oSheet.Protection.AllowEditRanges.Add("PKEmptyRow", oRange, Missing.Value); oSheet._Protect(Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); oSheet = null; oRange = null; oWB.SaveAs(filename, ExcelIt.XlFileFormat.xlWorkbookNormal, Missing.Value, Missing.Value, Missing.Value, Missing.Value, ExcelIt.XlSaveAsAccessMode.xlExclusive, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); oWB.Close(Missing.Value, Missing.Value, Missing.Value); oWB = null; objXL.Quit(); GC.WaitForPendingFinalizers(); GC.Collect(); GC.WaitForPendingFinalizers(); GC.Collect(); } 

由于某些原因，我想： 将所有列数据types设置为文本。 目前，因为我没有指定任何数据types被设置为“普通”的东西。

有人能告诉我如何做到这一点？ 问候

Answer 1

您可以使用Range.NumberFormat Property

 Range usedRange = oSheet.UsedRange; usedRange.NumberFormat = "@";