[Solved] RadGridView Data disappear inside other controls

[qwer]

Hi telerik,
      In my RadGridView I'm using one column to RadComboBox (Title Column), I've problem in that Title column as data is not showing on initial load-up and disappeared when not focus on that particular column. But other column show correctly at all time.
      In step1, (just loading up page) and can't see data on that column.
      In step2, when I click on that column data is showing correctly.
      In step3, I click again and Actual RadComboBox and I can change data.
      In step4, If i click on other area or other column, (title column) data is disappearing again.
    

Here is my code snipped (MVVM approached) and is there something wrong?

  <telerik:RadGridView  Name="radgvPersonal" ItemsSource="{Binding Path=PersonalInfos}" AutoGenerateColumns="False" ShowColumnFooters="True" RowIndicatorVisibility="Collapsed" CanUserFreezeColumns="False" ShowGroupPanel="False" SelectionUnit="FullRow">

<telerik:RadGridView.Columns>
<telerik:GridViewComboBoxColumn Header="Title" IsResizable="False" IsFilterable="True" DataMemberBinding="{Binding titleid,Mode=TwoWay}"  ItemsSource="{Binding Path = titleDescs,Mode=OneWay" DisplayMemberPath="DisplayName" SelectedValueMemberPath="titleid" />

<telerik:GridViewDataColumn Header="First Name" IsFilterable="True" IsGroupable="False" IsReorderable="False" IsResizable="False" ShowDistinctFilters="False" SortingState="None" DataMemberBinding="{Binding Path=FirstName}" />

Thanks and Regards

[Maya]

Hello qwer,

You may take a look at this help topic for a reference.
 

Greetings,
Maya
the Telerik team

[qwer]

I can't do that approach as
my project not using codebehind function like below.

private void gridView_DataLoaded(object sender, EventArgs e)
{
    (gridView.Columns["Category"] as GridViewComboBoxColumn).ItemsSource = GetCategories();
}

Any other solution for that Blank issues.
Thanks

[Maya]

Hello qwer,

The other solution is to define your ViewModel or class that holds the source for the GridViewComboBoxColumn in the Resources section and then use it as a StaticResource. This approach is also demonstrated in the same help article.

Kind regards,
Maya
the Telerik team