How to use crystal report in WPF application using xsd dataset in VS 2008

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VB

I want to create crystal report in WPF application using XSD dataset in VS 2008..I have tried with the below code but it is showing error in the line itself.
Can any1 please help me to rectify my problem?

XAML Code:

xmlns:rv ="clr-namespace:Microsoft.Reporting.WinForms;assembly=Microsoft.ReportViewer.WinForms" 
<WindowsFormsHost Height="100" Margin="189,76,332,0" Name="WindowsFormsHost1" VerticalAlignment="Top">
            <rv:ReportViewer x:Name="CRViewer"/>
            </WindowsFormsHost>

Vb.net Code:

Report.Load("../../rptSanc_Impl")
            Dim rsSancImpl As New ADODB.Recordset
            rsSancImpl.Open(ReportQuery, MainCon, 1, 3)
            If Not rsSancImpl.EOF Then
                Report.SetDataSource(rsSancImpl)

            Else
                MsgBox("No records found.")
            End If
Crviewer.reportsource = report

I get error on last line of vb code.