My code:

XAML:

<igReports:XamReportPreview xmlns:igReports="http://infragistics.com/Reporting"
                      Name="ReportPreviewQuotationsWindow" Height="Auto" Width="Auto" />

Code Behind:

Private Sub ButtonReportQuotationsWindow_Click(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles ButtonReportQuotationsWindow.Click

        Dim ReportView As New Report
        ReportView = CreatReport(ReportView)
        Dim ReportEM As New EmbeddedVisualReportSection(DataGridQuotationWindow)

        ReportView.ReportSettings.HorizontalPaginationMode = HorizontalPaginationMode.Mosaic
        ReportView.ReportSettings.PageOrientation = PageOrientation.Landscape
        ReportView.Sections.Add(ReportEM)

        ReportPreviewQuotationsWindow.GeneratePreview(ReportView, False, False)

End Sub

This is all my code! Do you need DataGridQuotationWindow's code?

Thank you!

I am attaching a sample code which I used to test this. Everything looks correctly on my end. The LabelPresenters are as high as the highest label presenter. Please let me know if you can reproduce the issue with this sample.

Hello,

Thanks for your Help. I found the problem. The problem is this property of the DataGrid:  AutoFitMode="ExtendLastField"  (FieldLayoutSettings). When i put it, the ReportPreView is not generated correctly. If you put in your sample will be the same problem.