• Cancel: This boolean property can be set true to abandon exporting
• DeviceInfo: This property can be used to pass rendering parameters to a rendering extension (more info here).
• RenderingExtension: This property is read only and shows export extention info for the exported report. More info is available in the Rendering extensions help article.

Example

CopyC#

private void reportViewer1_Export(object sender, Telerik.ReportViewer.WinForms.ExportEventArgs args)
{
    switch (args.RenderingExtension.Name)
    {
        case "Excel":
            //do something
            break;
        case "PDF":
            //do something
            break;
    }

CopyVB.NET

Private Sub reportViewer1_Export(sender As Object, args As Telerik.ReportViewer.WinForms.ExportEventArgs)
    Select Case args.RenderingExtension.Name
        Case "Excel"
            'do something
            Exit Select
        Case "PDF"
            'do something
            Exit Select
    End Select
End Sub

Print event

The Print event occurs when the report shown in the ReportViewer control is printed. The Print event handler receives two arguments:

1. The ReportViewer control that owns the report that is being exported. This argument is of type object, but can be cast to the ReportViewer type.
2. System.ComponentModel.CancelEventArgs with a single property:Cancel: This boolean property can be set true to abandon printing

Example

CopyC#

private void reportViewer1_Print(object sender, System.ComponentModel.CancelEventArgs e)
{
    e.Cancel = true;
}

CopyVB.NET

Private Sub reportViewer1_Print(sender As Object, e As System.ComponentModel.CancelEventArgs)
    e.Cancel = True
End Sub

RenderingBegin event

The RenderingBegin event occurs when the report in the viewer control is rendered. The RenderingBegin event handler receives two arguments:

1. The ReportViewer control that owns the report that is being exported. This argument is of type object, but can be cast to the ReportViewer type.
2. System.ComponentModel.CancelEventArgs with a single property:Cancel: This boolean property can be set true to abandon rendering

CopyC#

private void reportViewer1_RenderingBegin(object sender, System.ComponentModel.CancelEventArgs e)
{
    e.Cancel = true;
}

CopyVB.NET

Private Sub reportViewer1_RenderingBegin(sender As Object, e As System.ComponentModel.CancelEventArgs)
    e.Cancel = True
End Sub

UpdateUI event

The UpdateUI event occurs when the UI of the report viewer control is updated. The UpdateUI event handler receives two arguments:

1. The ReportViewer control that owns the report that is being exported. This argument is of type object, but can be cast to the ReportViewer type.
2. System.EventArgs