ReportViewer-Exception: A 'Binding' can only be set on a DependencyProperty of a DependencyObject.

[wal1]

Hello!

I upgrade a project to "Telerik Reporting Q2 2012 SP2 (6.1.12.820)" from "(4.0.10.423)". The following code dont work, after the upgrade.

<UserControl x:Class="Sta1.UI.Modules.Reports.ReportDetailView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:telerik="clr-namespace:Telerik.ReportViewer.Wpf;assembly=Telerik.ReportViewer.Wpf" mc:Ignorable="d"
             d:DesignHeight="300" d:DesignWidth="300" x:Name="thisWindow">
  <Grid>
    <telerik:ReportViewer Report="{Binding DataContext.Report, ElementName=thisWindow}" />
  </Grid>
</UserControl>

The exception is:
A 'Binding' cannot be set on the 'Report' property of type 'ReportViewer'. A 'Binding' can only be set on a DependencyProperty of a DependencyObject.

In the ViewModel is this code:

...
    private Report _report;
    public Report Report
    {
      get { return _report; }
      private set
      {
        _report = value;
        NotifyOfPropertyChange(() => Report);
      }
    }

    public void SetReport(Report reportToShow)
    {
      Report = null;
      Report = reportToShow;
    }
...

Thanks in advance
wal1

[Steve]

Hi wal1,

You now have to bind to the newly introduced ReportSource Property instead. In your ViewModel you can pass the respective report source (InstanceReportSource, UriReportSource, XmlReportSource or TypeReportSource). It has to be something like this:

Copy Code

<telerik:ReportViewer x:Name="ReportViewer1" ReportSource="{Binding MyReportSource}" />

In your ViewModel then you pass the appropriate report source to that property.

All the best,
Steve
the Telerik team

[wal1]

It works :o)

Thanks for your answer Steve