However, When I used to call the same method inside of Drillthrough() event “Excel” & PDF option getting visible in Export controls dropdown. I’ve tried by calling your method in the first statement of my Drillthrough() event,(like what I used in Page load method).

Please let me know, How can I hide the excel option in Drillthrough() event of Reportviewer.

Public Class ServerReportDecorator
Private ReadOnly serverReport As ServerReport

Public Sub New(ByVal reportViewer As ReportViewer)
Me.serverReport = reportViewer.ServerReport
End Sub

Public Sub New(ByVal serverReport As ServerReport)
Me.serverReport = serverReport
End Sub

Public Sub DisableUnwantedExportFormats()
For Each extension As RenderingExtension In serverReport.ListRenderingExtensions()
If extension.Name = “XML” Or extension.Name = “IMAGE” Or extension.Name = “MHTML” Or extension.Name = “EXCEL” Or extension.Name = “WORD” Then
ReflectivelySetVisibilityFalse(extension)
End If
Next
End Sub

Private Sub ReflectivelySetVisibilityFalse(ByVal extension As RenderingExtension)
Dim info As FieldInfo = extension.GetType().GetField(“m_isVisible”, BindingFlags.NonPublic Or BindingFlags.Instance)

If Not info Is Nothing Then
info.SetValue(extension, False)
End If
End Sub
End Class

public void DisableUnwantedExportFormats()
{

FieldInfo info;

foreach (RenderingExtension extension in rvMain.ServerReport.ListRenderingExtensions())
{
if (extension.Name != “PDF” && extension.Name != “EXCEL”) // only PDF and Excel – remove the others
{
info = extension.GetType().GetField(“m_isVisible”, BindingFlags.Instance | BindingFlags.NonPublic);
info.SetValue(extension, false);
}

if (extension.Name == “EXCEL”) // change “Excel” name on the list to “Excel 97-2003 Workbook”
{
info = extension.GetType().GetField(“m_localizedName”, BindingFlags.Instance | BindingFlags.NonPublic);
if (info != null) info.SetValue(extension, “Excel 97-2003 Workbook”);
}
}
}

Hope this helps!