AlternationCount causes columns to shrink

[Eugene]

Hi,

It seems that the RadGridViews AlternationCount causes the columns to shrink. This only happens when the RadGridView is nested within a collapsed expander and a scrollviewer.

<ScrollViewer>
   <Expander IsExpanded="False">
      <telerik:RadGridView AutoGenerateColumns="False"
                    ColumnWidth="*"
                    AlternationCount="2"
                    ItemsSource="{Binding Products}" />
      </telerik:RadGridView>
   </Expander>
</ScrollViewer>

When I remove the AlternationCount property or set IsEpanded property on the expander to true - it seems to solve the issue.

I am using the latest version of WPF assemblies .net 4.0.

Regards
Eugene

[Vera]

Hello Eugene,

 
The issue you reported is caused by the ScrollViewer. May I ask you to share some more details about the scenario in your application? What are you trying to achieve by using the ScrollViewer? I would suggest you to remove it if possible in order the avoid the undesired behavior.

Looking forward to hearing from you.

All the best,
Vera
the Telerik team

[Eugene]

Hi,

I simplified the xaml in order to demonstrate the issue that we experiencing. The Scrollviewer wraps mutlitple panels. Each panel contains an expander. Some of these expanders, as shown below, contain RadGridViews. Together the panels exceed the maximum screen size.
The ScollViewer is used by the user to scroll to the desired panel.

Hope this explains my scenario.

Regards
Eugene

[Vlad]

Hi,

We were able to fix this issue and the fix will be part of our next internal build - Monday. I've added 2000 Telerik points to your account. 

Thank you very much for your feedback once again!

All the best,
Vlad
the Telerik team

[danparker276]

I'm having problems that are problems with what seems to be the same thing.  If I remove the StackPanel named "spTheTrouble" in the code below it works.  The column widths are messed up otherwise.  This is a simplified version of my code so that's why I have the stackpanel.  I found this converting part of my code from Silverlight to WPF, so this works ok in Silverlight.

<Grid>
    <ScrollViewer Margin="10"
            BorderThickness="0" MinWidth="600" VerticalAlignment="Top">
                <telerik:RadExpander Width="500" BorderBrush="Black" BorderThickness="2"
                        Header="Test Expander Header">
                    <StackPanel Name="spTheTrouble">
                        <telerik:RadGridView>
                            <telerik:RadGridView.Columns>
                                <telerik:GridViewDataColumn Header="Header1" MinWidth="50" />
                                <telerik:GridViewDataColumn Header="Header2" MinWidth="50" />
                                <telerik:GridViewDataColumn Header="Header3" MinWidth="50" />
                                <telerik:GridViewDataColumn Header="HeaderAll" Width="*" />
                            </telerik:RadGridView.Columns>

                        </telerik:RadGridView>
                    </StackPanel>
                </telerik:RadExpander>
    </ScrollViewer>
</Grid>

[danparker276]

Just wondering if you were able to reproduce this same issue I'm having.  It doesn't seem like the problem is fixed in my usage.

[Vlad]

Hello,

 Have you tried our just released Q3 2012? Do you still have such problems? 

Greetings,
Vlad
the Telerik team

[danparker276]

Yeah, just installed the latest version 2012.3.1017.40 and got the same thing.  You can just copy that code above and put it into your mainwindow

[Maya]

Hello Eugene,

The issue is resolved and will be available in our internal build coming next week.

Regards,
Maya
the Telerik team