Silverlight Report Viewer refresh

[Chris Thierry]

Hello,

I'm using silverlight report viewer, I need to refresh the report by programming.  I'm using RenderBegin and setting  the report parameters there.
Any Suggestions on how to call the "Refresh" button on the report viewer by programming?

Thanks

[Steve]

Hi Chris,

The RefreshReportCommand Property is what you're looking for.

Best wishes,
Steve
the Telerik team

[Valentin Raceanu]

How can I access this property?

[Steve]

Hello Valentin,

Here is a sample snippet that illustrates the approach:

Copy Code

Copy Code

public partial class MainPage : UserControl
{
    public MainPage()
    {
        InitializeComponent();
    }

    void button1_Click(object sender, RoutedEventArgs e)
    {
        this.ReportViewer1.RefreshReport();
    }
}

static class ReportViewerExtensions
{
    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);
        }
    }
}

Hope it helps.

Kind regards,
Steve
the Telerik team

[Valentin Raceanu]

It works. But if "reportViewer" is not loaded yet (let's say it is in a tabcontrol) then GetChild(reportViewer, 0) throws an exception.

[James]

Hi all,

I am currently trying to integrate the Telerik reporting control into a LightSwitch screen along with other controls. I was hoping to refresh the report when other selections on the screen changed using the method you described above. However, the command that selects the LayoutRoot child object from the ReportViewer is throwing an out of bounds exception. 

Is there something I'm missing here, and has anyone else had a similar experience/problem?

Thanks,
James

[Steve]

Hi James,

A possible reason for this error would be if the report viewer template has not yet been created e.g. you're invoking the extension method in the window/user control constructor. To make sure the template is available use OnApplyTemplate or any other event where you're sure the template is available.

Best wishes,
Steve
the Telerik team