Question

I am trying to export a report into excel in vb.net.

everything works fine in Chrome and FF, but when i do it in IE, the active directory login pop up keeps coming up.

if i cancel it (like 4-5 times) the files saves just fine… why is it popping up> is there a way around it?

please see my code below:

 Protected Sub lnkExport_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles lnkExport.Click
        Dim ds As DataSet = cSource.FindSources(Session("uid"), True, txtID.Text )

        Dim response As HttpResponse = HttpContext.Current.Response
        Dim filename As String = "AASD"
        ' first let's clean up the response.object
        response.Clear()
        response.Charset = ""

        ' set the response mime type for excel
        response.ContentType = "application/vnd.ms-excel"
        response.AddHeader("Content-Disposition", "attachment;filename=""" & filename & """")

        ' create a string writer
        Using sw As New StringWriter()
            Using htw As New HtmlTextWriter(sw)
                ' instantiate a datagrid
                Dim dg As New DataGrid()
                dg.DataSource = ds.Tables(0)
                dg.DataBind()
                dg.RenderControl(htw)
                response.Write(sw.ToString())
                response.[End]()
            End Using
        End Using
    End Sub

Answer 1

it got fixed by writing out the data to excel, cell by cell in a loop.