c# Microsoft.Office.Interop.Excel export
===

Hy,

I'm writing a program. I'm using C# language, DataSet, etc.

I have about 200 000 values what I want to export to an .xlsx document.

My code:

    using Excel = Microsoft.Office.Interop.Excel;
    ...
    Excel.Application excelApp = new Excel.Application();
    Excel.Workbook excelworkbook = excelApp.Workbooks.Open(/location/);
    Excel._Worksheet excelworkSheet = (Excel.Worksheet)excelApp.ActiveSheet;
    ...
    excelApp.visible = true;
    ...
    for (int i = 0; i < /value/; i++)
     for (int j = 0; j < /value/; j++) 
      excelworkSheet.Cells[i, j] = /value/;

It works well, but it is too slow (at least 5-10 minutes).

So I need some speed up.
Have you got any advice?

Thank you for your further help!