将Excel中的特定工作表转换为CSV

Question

How do I convert a particular sheet to CSV from Excel using C# Interop? Does it default to the first sheet or can I specify?

This is the code i am using:

 private void ConvertProgsToCSV()
    {
        Excel.Application app = new Excel.Application();
        Excel.Workbook wb = app.Workbooks.Open(txtFname.Text);
        wb.SaveAs(@"C:\Temp\output.csv", Excel.XlFileFormat.xlCSVWindows);
        wb.Close(false);
        app.Quit();
        Console.WriteLine("Done!");
    }

Answer 1

You have to open worksheet by it's name and Select it using Select() function:

xlSheet = (Excel.Worksheet)xlBook.Worksheets["Sheet1"];
xlSheet.Select(Type.Missing);
xlBook.SaveAs("C:\Filename.csv", Excel.XlFileFormat.xlCSV,Excel.XlSaveAsAccessMode.xlNoChange);

Assuming that xlSheet is of type Interop.Excel.WorkSheet and xlBook is of type Interop.Excel.Workbook

You can refer to this links for more info:

• How to: Programmatically Select Worksheets
• Working with Worksheets
• C# with Excel -- How to select a sheet?