I have attached the sample of where is the issue and it is changing data on the fly.Data is already in there and Issue is with the vertical scrolling.

When I scroll the XamGrid using vertical scroll it works fine. When I scroll using the mouse wheels over the XamGrid, it is missing the rows display.

Using InvalidateData() which I have commented in the CustomizedXamGrid class is degrading the performance of XamGrid on scroll.

Is there any better of handle this.

Gajender,

I have tested the behavior you have described on my side using the latest build of version 14.1 - 14.1.20141.2216 and it seems that the issue is not reproducible. Which is the build version you are using? Please refer to the attached video that shows the behavior when the mouse wheel and the vertical scrollbar thumb are used for scrolling. I have added a column that shows the values of the RowVisibility property to illustrate better which rows are displayed. Could you please let me know if I am missing something in the scenario?

Hello,

I am just checking if you had a chance to look into this and if you would like any further assistance on the matter.

I have binded the Visibility of CellsPanel with the item's Property as below.

                            <Style TargetType="{x:Type igPrim:CellsPanel}" BasedOn="{StaticResource {x:Type igPrim:CellsPanel}}">

                                <Setter Property="Visibility" Value="{Binding AnalysisVisibility, FallbackValue=Visible, Mode=OneWay, TargetNullValue=Visible}" />

                            </Style>

I also tried to UpdateTarget as below but does not work either.

private void CellsPanel_Loaded(object sender, RoutedEventArgs e)

        {

            CellsPanel c = sender as CellsPanel;

            c.DataContextChanged += new DependencyPropertyChangedEventHandler(c_DataContextChanged);

        }

 private void c_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)

        {

            if (e.NewValue != null)

            {

                CellsPanel c = sender as CellsPanel;

                var dataContext = e.NewValue as EventViewModel;

                if (dataContext != null)

                {

                    BindingOperations.GetBindingExpressionBase(c, CellsPanel.VisibilityProperty).UpdateTarget();

                }

            }

        }

Is there a way, I can recreate the CellsPanel every time I scroll rather than reuse the same control.

I fixed the issue by Binding the Height property of CellsPanel.

   <Style TargetType="{x:Type igPrim:CellsPanel}" BasedOn="{StaticResource {x:Type igPrim:CellsPanel}}">

             <Setter Property="Height" Value="{Binding AnalysisHeight, Mode=OneWay}" />

    </Style>

Hello Gajender,

Thank you for your feedback. I am glad that you resolved your issue and I believe that other community members may benefit from this as well.