以编程方式更改 Excel 列的格式并防止在数字字段中使用科学记数法，如指数 (E)

Question

我正在使用以下代码从 DataSet 生成 Excel

int ColumnsCount;

        if (DataTable == null || (ColumnsCount = DataTable.Columns.Count) == 0)
            throw new Exception("ExportToExcel: Null or empty input table!\n");

        // load excel, and create a new workbook
        Microsoft.Office.Interop.Excel.Application Excel = new Microsoft.Office.Interop.Excel.Application();
        Excel.Workbooks.Add();

        // single worksheet
        Microsoft.Office.Interop.Excel._Worksheet Worksheet = Excel.ActiveSheet;

        object[] Header = new object[ColumnsCount];

        // column headings               
        for (int i = 0; i < ColumnsCount; i++)
            Header[i] = DataTable.Columns[i].ColumnName;


        Microsoft.Office.Interop.Excel.Range HeaderRange = Worksheet.get_Range((Microsoft.Office.Interop.Excel.Range)(Worksheet.Cells[1, 1]), (Microsoft.Office.Interop.Excel.Range)(Worksheet.Cells[1, ColumnsCount]));
        HeaderRange.Value = Header;
        HeaderRange.Interior.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.BlanchedAlmond); //ConsoleColor.Yellow;//


         HeaderRange.Font.Bold = true;

        // DataCells
        int RowsCount = DataTable.Rows.Count;
        object[,] Cells = new object[RowsCount, ColumnsCount];

        for (int j = 0; j < RowsCount; j++)
            for (int i = 0; i < ColumnsCount; i++)
                Cells[j, i] = (DataTable.Rows[j][i]);

        Worksheet.get_Range((Microsoft.Office.Interop.Excel.Range)(Worksheet.Cells[2, 1]), (Microsoft.Office.Interop.Excel.Range)(Worksheet.Cells[RowsCount + 1, ColumnsCount])).Value = Cells;
        Worksheet.Columns.AutoFit();





                Worksheet.SaveAs(ExcelFilePath);
                Excel.Quit();
                Console.Write("Excel file saved!");

但是，我的其中一列显示为1.004E+12 而不是1004000003451，尽管它是从sql server 作为varchar 返回的字符串列。我该如何预防？有人可以帮忙吗？

Answer 1

最后很简单，就是用了.columns的方法

Worksheet.Columns("A").NumberFormat ="@";