The correct solution would be to ensure that there are no exceptions raised as a whole. The error message in red rectangle instead of the faulty report item is meant only for the developer to see while working on the report and not meant for the end user to see.
Anyway you can work around/suppress the error by using the Error event of the report. The sender element of the error event handler is the report item which has error and thus the following code would cover it up:
sender, ErrorEventArgs eventArgs)
Telerik.Reporting.Processing.ProcessingElement procEl = (Telerik.Reporting.Processing.ProcessingElement)sender;
Hope this helps!
the Telerik team
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