[Solved] AlternateRowBackground no longer works with 2010 q2 controls

[Matt Greer]

I had AlternateRowBackground working great on my RadGridViews. I noticed a while back it no longer works, but never gave it much thought. Now that I am investigating it, I see this looks like it is a  breaking change in the 2010 SP2 controls. Has anyone else encountered this? Is there anything I can do to resolve this?

In a brand new Silverlight Project with only this UserControl, the alternate color briefly appears as the grid loads up, then gets covered with white.

<UserControl
    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"
    mc:Ignorable="d"
    x:Class="SilverlightApplication1.UserControl1"
    d:DesignWidth="640" d:DesignHeight="480">
    <Grid x:Name="LayoutRoot">
        <telerik:RadGridView x:Name="_grid" Width="400" Height="300" AlternateRowBackground="Red" AlternationCount="2" />
    </Grid>
</UserControl>

And my code behind is innocent:

namespace SilverlightApplication1
{
    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            // Required to initialize variables
            InitializeComponent();

            _grid.ItemsSource = Enumerable.Range(5, 10);
        }
    }
}

Video illustrating the problem:
http://www.youtube.com/watch?v=SvIjj2ggvxw

I am using Windows 7 Professional 64 bit
IE8 8.0.7600.16385
Silverlight 4, 4.0.50826.0
Telerik controls version 2010.2.812.1040


IE Specific bug
This bug is specific to IE. In Chrome 6 on WIndows the alternate rows show up just fine. I know IE is not the greatest browser, but you guys need to test your stuff out in it every once in a while :) This is the second bad IE specific bug I have found (the other being the RadTreeView drag and drop reported in the TreeView forum).

[Matt Greer]

I have found the reason for this issue. My IE was set to 120% zoom somehow. In fact you can even see the 120% zoom setting in the lower right corner of my video.

Setting it back to 100% zoom fixes this issue. The alternating rows appear as expected.

I would still argue this is a bug, but a much less serious one than I at first thought.

[Yordanka]

Hi Matt Greer,

We had different problems in RadGridView when browser zooming is used, but they are already fixed. If you upgrade to our latest version - Q2 2010 SP2 (.0924), the problem with AlternationRowBackground will no longer exist.

Greetings,
Yordanka
the Telerik team