Progress® Telerik® Reporting R3 2020

Client Events

This article explains how to attach client event handlers to an WebForms wrapper of the HTML5 Report Viewer instance.

To attach a client event handler you have to set the appropriate ClientEvents tag as shown below:

<telerik:ReportViewer
    ID="reportViewer1"
    runat="server">
    <ClientEvents RenderingBegin="onRenderingBegin" />

JavaScript

<script>
  function onRenderingBegin() {
      console.log("rendering begin!");
  }
</script>

The following table lists the available client events:

Event	Description
RenderingBegin	Rendering begin.
RenderingEnd	Rendering end.
PrintBegin	Print begin.
PrintEnd	Print end.
ExportBegin	Export begin.
ExportEnd	Export end.
UpdateUi	Update UI.
Error	Error occurred.
PageReady	Page is ready.
Ready	Report viewer is ready.
InteractiveActionExecuting	An interactive action is being executed and can be canceled.
InteractiveActionEnter	The mouse cursor has entered the area of an interactive action.
InteractiveActionLeave	The mouse cursor has left the area of an interactive action.
ViewerToolTipOpening	A tooltip opening has commenced and can be canceled.