I am getting the following exception when attempting to export a report from WPF Report Viewer to any format in the pull down list:
System.ArgumentNullException was unhandled by user code
HResult=-2147467261
Message=Value cannot be null.
Parameter name: format
Source=mscorlib
ParamName=format
StackTrace:
at System.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args)
at System.String.Format(String format, Object arg0)
at Telerik.ReportViewer.Wpf.ReportViewerModel.ExportReport(String format, Hashtable deviceInfo)
at Telerik.ReportViewer.Wpf.ReportViewerModel.set_SelectedRenderingExtension(RenderingExtension value)
InnerException:
I'm not sure when this started. Has anyone else seen this problem?
Thanks