How do I format my export to excel workbook in microsoft.office.interop.excel?

Question

I have this export function that allows me to export 2 grid views into 2 separated worksheets in one excel.

But my problems are:

1. How can I have a usual

Answer 1

Modify the path of the excel file to save to a virtual path as follows

workbook.SaveAs(@"C:\Users\test\Desktop\Test\" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

change this to

workbook.SaveAs(@"~/ExcelFiles/Filename.xlsx" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

Try the following code for displaying save as dialog

String FileName = "FileName.xlsx";
String FilePath = "~/ExcelFiles/FileName.xlsx"; 
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.ClearContent();
response.Clear();
response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
response.AddHeader("Content-Disposition", "attachment; filename=" + FileName + ";");
response.TransmitFile(FilePath);
response.Flush();
response.End();

Answer 2

Try this:

Excel.Worksheet worksheet =(Excel.Worksheet)workbook.Worksheets["Sheet" + sheetid];

Answer 3

as specified by Laxmikant modify the code of your method "ExportToExcel" as follows.

public void ExportToExcel(Microsoft.Office.Interop.Excel._Application app, Microsoft.Office.Interop.Excel._Workbook workbook, GridView gridview, string SheetName, int sheetid)
{

// see the excel sheet behind the program
app.Visible = true;

worksheet = (Excel.Worksheet)workbook.Worksheets.Add();

// changing the name of active sheet
worksheet.Name = SheetName;

// storing header part in Excel
for (int i = 1; i < gridview.Columns.Count + 1; i++)
{
    worksheet.Cells[1, i] = gridview.Columns[i - 1].HeaderText;
}

// storing Each row and column value to excel sheet
for (int i = 0; i < gridview.Rows.Count - 1; i++)
{
    for (int j = 0; j < gridview.Columns.Count; j++)
    {
        worksheet.Cells[i + 2, j + 1] = gridview.Rows[i].Cells[j].Text.ToString();
    }
}

I removed these two lines of code and now there is no need of the parameter "Sheetid"

Excel.Worksheet worksheet =(Excel.Worksheet)workbook.Worksheets["Sheet" + sheetid];
worksheet = workbook.ActiveSheet;

Hope this will solve your issue

Answer 4

you haven't added worksheet in Workbook

try below code

worksheet = (Excel._Worksheet)oXL.Worksheets.Add();

worksheet.Name = SheetName;

for more info check http://dotnetmentors.com/c-sharp/how-to-export-sql-data-to-excel-using-microsoft-office-interop.aspx

set your headers using rangs

  string[] colNames = new string[gv.Columns.Count];

  int col = 0;

  foreach(gvvolumns dc in GridView.Columns)
    colNames[col++] = dc.ColumnName;

  char lastColumn = (char)(65 + dtProducts.Columns.Count - 1);

  oSheet.get_Range("A1", lastColumn + "1").Value2 = colNames;
  oSheet.get_Range("A1", lastColumn + "1").Font.Bold = true;
  oSheet.get_Range("A1", lastColumn + "1").VerticalAlignment 
        = Excel.XlVAlign.xlVAlignCenter;