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Theme causes VS to crash / other problem

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GridView
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Edward
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Edward asked on 16 May 2011, 09:29 PM
Using the latest version of the control and VS 2010.

If I try to use the following code, Visual Studio will crash when opening the design view that has a grid in it.  However, it works fine when running.

<Style TargetType="telerik:RadGridView" >
    <Setter Property="telerik:StyleManager.Theme" Value="Windows7" />
    <Setter Property="IsSynchronizedWithCurrentItem" Value="true" />
</Style>


For the following code, the default theme just doesn't seems to take hold.  However the same technique works for other controls (I tried RadButton and RadComboBox).

<telerik:Windows7Theme x:Name="thmWin7" />
    <Style TargetType="telerik:RadGridView" telerik:StyleManager.BasedOn="{StaticResource thmWin7}">
        <Setter Property="Margin" Value="2 2 2 2"/>
        <Setter Property="VerticalAlignment" Value="Center"/>
    </Style>

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Vanya Pavlova
Telerik team
answered on 17 May 2011, 08:02 AM
Hello Edward,

 

Thank you for sharing these snippets with us! Indeed the both are correct and it depends on the platform.


The recommended approach in WPF is to use the following:

<Style TargetType="telerik:RadGridView">
        <Setter Property="telerik:StyleManager.Theme" Value="Expression_Dark"/>
        <Setter Property="RowIndicatorVisibility" Value="Collapsed"/>
</Style>

In Silverlight you should use the one below:

<telerik:Windows7Theme x:Name="thmWin7" />
    <Style TargetType="telerik:RadGridView" telerik:StyleManager.BasedOn="{StaticResource thmWin7}">
        <Setter Property="Margin" Value="2 2 2 2"/>
        <Setter Property="VerticalAlignment" Value="Center"/>
</Style>


The same is valid for any other RadControl or a native one supported by our theming mechanism. 
Hope this helps!


Best wishes,
Vanya Pavlova
the Telerik team
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Edward
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answered on 17 May 2011, 02:20 PM
The second approach does not work.  An example of my code:

<telerik:RadGridView  Grid.Row="12" Grid.ColumnSpan="2" CanUserInsertRows="True" CanUserDeleteRows="true" ShowInsertRow="True"
                                                 AutoGenerateColumns="False" ShowGroupPanel="False" ShowGroupFooters="False" DataLoaded="gdvLanguage_DataLoaded" >
                                <telerik:RadGridView.Columns>
                                    <telerik:GridViewComboBoxColumn Header="Type" DisplayMemberPath="desc1" SelectedValueMemberPath="idLanguageTypeKey" DataMemberBinding="{Binding idLanguageTypeKey}" />
                                    <telerik:GridViewComboBoxColumn Header="Language" DisplayMemberPath="desc1" SelectedValueMemberPath="idLanguageKey" DataMemberBinding="{Binding idLanguageKey}" />
                                    <telerik:GridViewCheckBoxColumn Header="Primary" DataMemberBinding="{Binding isPrimary}" />
                                </telerik:RadGridView.Columns>
                            </telerik:RadGridView>

The grid still shows up as with the default yellow-black theme, instead of Windows 7.
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Vanya Pavlova
Telerik team
answered on 18 May 2011, 03:25 PM
Hi Edward,

 
A style based on a theme will simply change simple properties of RadGridView. The rest of its parts will maintain the default theme, you may refer to the following:

<Style TargetType="telerik:RadGridView" telerik:StyleManager.BasedOn="Windows7">
        <Setter Property="BorderBrush" Value="Red"/>
        <Setter Property="RowIndicatorVisibility" Value="Collapsed"/>
        <Setter Property="BorderThickness" Value="2"/>
        </Style>
        <Style TargetType="telerik:GridViewRow" telerik:StyleManager.BasedOn="Windows7">
            </Style>
            <Style TargetType="telerik:GridViewHeaderRow" telerik:StyleManager.BasedOn="Windows7">
                </Style>
                <Style TargetType="telerik:GridViewHeaderCell" telerik:StyleManager.BasedOn="Windows7">
                    <Setter Property="Background" Value="Yellow"/>
</Style>


This will change only the specified properties for RadGridView, GridViewRow, GridViewHeaderRow, GridViewHeaderCell. Attached is a sample project that demonstrates this approach.



Kind regards,
Vanya Pavlova
the Telerik team
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