[Solved] ContextMenu selects wrong row if browser zoom is greater than 100%

[Rob]

I have installed the latest version of the controls - 2011.2.712.1040 but the problem continues. When the Browser Zoom is set to any value higher than 100% the incorrect row, usually random, is identified with the right-click. When the mouse-click is released that incorrect row is selected:

<UserControl x:Class="ContextMenu_Example.MainPage"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
             xmlns:my="clr-namespace:ContextMenu_Example"
             mc:Ignorable="d" d:DesignHeight="700" d:DesignWidth="700">
    <UserControl.Resources>
        <my:MyViewModel x:Key="MyViewModel"/>
    </UserControl.Resources>
 <Grid x:Name="LayoutRoot"
          Background="White"
          DataContext="{StaticResource MyViewModel}">
  <Grid.RowDefinitions>
   <RowDefinition Height="*"/>
   <RowDefinition Height="Auto" />
  </Grid.RowDefinitions>
  <telerik:RadGridView Name="playersGrid"
                                     ItemsSource="{Binding Players}"
                                     AutoGenerateColumns="False">
   <telerik:RadGridView.Columns>
    <telerik:GridViewDataColumn DataMemberBinding="{Binding Name}"/>
    <telerik:GridViewDataColumn DataMemberBinding="{Binding Number}"/>
    <telerik:GridViewDataColumn DataMemberBinding="{Binding Position}"/>
    <telerik:GridViewDataColumn DataMemberBinding="{Binding Country}"/>
   </telerik:RadGridView.Columns>
   <telerik:RadContextMenu.ContextMenu>
    <telerik:RadContextMenu ItemClick="RadContextMenu_ItemClick" Opened="RadContextMenu_Opened">
     <telerik:RadContextMenu.Items>
      <telerik:RadMenuItem Header="Add"/>
      <telerik:RadMenuItem Header="Edit"/>
      <telerik:RadMenuItem Header="Delete"/>
     </telerik:RadContextMenu.Items>
    </telerik:RadContextMenu>
   </telerik:RadContextMenu.ContextMenu>
  </telerik:RadGridView>
 </Grid>
</UserControl>

The compressed size of the project exceeds the upload limit but I would be happy to send them to you if you have another method.

I must comment that the upgrade process is excellent in that I just opened the project after installing the new version and the references were updated! Nice Work!

[Hristo]

Hello Rob,

Thank you for the kind words about our upgrade process.

RadContextMenu GetClickedElement is using VisualTreeHelper.FindElementsInHostCoordinates method.
This method have a bug and when browser is zoomed - it returns the element which is under the mouse but without zooming (e.g. zoom 100%). It is reported in the Metro Connect site but still there is no fix.

Greetings,
Hristo
the Telerik team

[John]

Is there an update on this?  Microsoft opened a ticket on this last spring, and we are in the middle of an eval of radgridview now and are surprised this is still an issue.  It is a sticking point for our customer.

[Yana]

Hi John ,

We talked to Microsoft about this issue and we hope that it will be fixed in the final version of Silverlight 5.

Kind regards,
Yana
the Telerik team

[John]

Hi,

I believe Rob above was the Microsoft support person we had originally talked to about this issue.  When Microsoft closed our ticket with them they indicated that the problem was with Telerik, and that he had even sent the fix to Telerik.  But it had to be made BY Telerik.  So it sounded like the issue was yours to fix.  Their native grid does not have this issue.  So I'm not sure what fix to Silverlight I should be waiting for.

[Hristo]

Hi John ,

Like I said in my previous post this is a problem in the framework.

I've attached sample project demonstrating the problem. Currently there is no workaround but I think that it will be fixed in the final version of Silverlight 5.

Regards,
Hristo
the Telerik team