Silverlight sender parameter to Report

[Yunfan]

 Hello,
I have a problem about the Telerik Report. I found a report with parameters when I scanning the examples about Silverlight how to call the WCF report. You made it work for adding a combox in the component element of WCF report. If the combox is in the Silverlight, Would you tell me how to realize it which the report with the parameter .How can I pass this parameter to the control of WCF report and make it display dynamic?

[Elian]

Hello Yunfan,

The following KB article elaborates on passing values to report parameters from the Silverlight client: Programmatic Initialization of Report Parameter Values in Telerik Reporting Silverlight Viewer.

Regards,
Elian
the Telerik team

[Yunfan]

I understand , but you say is in the page load.
 Now, I will dynamically Change the report Content in the ComboBox SelectionChanged event  ,in the same time refresh the report by the CSharp code, Please help me (⊙_⊙)?

[Elian]

Hi,

1. Add this extensions method that will allow you to refresh your report whenever you want:
   

   public static void RefreshReport(this ReportViewer reportViewer)
          {
              var layoutRoot = (FrameworkElement)VisualTreeHelper.GetChild(reportViewer, 0);
              var viewerModel = (ReportViewerModel)layoutRoot.DataContext;
              var refreshCommand = viewerModel.RefreshReportCommand;
              if (refreshCommand.CanExecute(null))
              {
                  refreshCommand.Execute(null);
              }
          }

2. Follow the before mentioned article about passing the parameters. For example:
   

   void ReportViewer1_RenderBegin(object sender, RenderBeginEventArgs args)
   {
      args.ParameterValues["ProductCategory"] = myComboBox.SelectedValue;
   }

   This is an event handler that will be called every time the report starts to render (every time you refresh it).
   
   
3. Then when you selected the desired parameters in the Silverlight app call the RefreshReportMethod()
   

   void ComboBox_OnSelectionChanged(object sender, RenderBeginEventArgs args)
   {
      //This will force the report to refresh and
      //the report will get the new parameter values
      ReportViewer1.RefreshReport();
   }

Regards,
Elian
the Telerik team