C# 使用C语言在Excel中将单元格内容转换为字符串数据类型#

在下面的代码中，我得到了这种异常

Data_Consistency.exe中发生类型为“System.Runtime.InteropServices.COMException”的未处理异常 其他信息：来自HRESULT的异常：0x800A03EC

for（i=0；i

可能的解决方案是

从单元格中获取值：

var-cellValue=（字符串）（excelWorksheet.Cells[10,2]作为Excel.Range.Value

再次写入单元格（已写入字符串） 或者编写

=文本（变量，“0”）

，在excel中转换

这对我有用。。。。。。。 {

字符串l_connectionString=“”

for (i = 0; i < excelCell.Columns.Rows.Count; i++)
{
    if (excelCell.Value2 == null)
        continue;
    else
        excelWorksheet.Range[excelCell,Type.Missing].ToString();
}

                    string l_filePath = txtComparisonFile.Text;
                    string l_fileExt = System.IO.Path.GetExtension(l_filePath);
                    if (l_fileExt.CompareTo(".xls") == 0)
                        l_connectionString = @"provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + l_filePath + ";Extended Properties='Excel 8.0;HRD=Yes;IMEX=1';"; //for below excel 2007  
                    else
                        l_connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + l_filePath + ";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1';";
                    Excel.Application excelApp = new Excel.Application();
                    excelApp.Visible = false;
                    string workbookPath = l_filePath;
                    Excel.Workbook excelWorkbook = excelApp.Workbooks.Open(workbookPath,
                            0, false, 5, "", "", false, Excel.XlPlatform.xlWindows, "",
                            true, false, 0, true, false, false);
                    Excel.Sheets excelSheets = excelWorkbook.Worksheets;
                    string currentSheet = l_selectedSheet;
                    Excel.Worksheet excelWorksheet = (Excel.Worksheet)excelSheets.get_Item(currentSheet);
                    Excel.Range excelCell = (Excel.Range)excelWorksheet.get_Range(l_comparisonSheetRange);
                    excelWorksheet.Columns.NumberFormat = "@";
                    excelWorkbook.Save();
                    excelWorkbook.Close();
                    g_objExcelHelper.g_objDtCompare = g_objExcelHelper.GetDataTable(l_connectionString, l_selectedSheet, l_comparisonSheetRange, g_objExcelHelper.g_objDtCompare);