I used this method to fix the empty combo box
http://docs.telerik.com/devtools/wpf/controls/radgridview/troubleshooting/blank-cells.html
I have a Usercontrol called relationship that uses that fix.
At the moment I have to create 4 different UserControls because each is pointing to a different viewmodel. Is there a way to have it dynamic so it can point to any.
<UserControl.Resources> <local:MainPageViewModel1x:Key="mainPageViewModel1"/> <local:MainPageViewModel2x:Key="mainPageViewModel2"/> <local:MainPageViewModel3x:Key="mainPageViewModel3"/></UserControl.Resources>...<telerik:GridViewComboBoxColumnHeader="Category" DataMemberBinding="{Binding CategoryID}" ItemsSource="{Binding Path=Categories, Source={StaticResource CHOOSE CORRECT VM}}" DisplayMemberPath="CategoryName" SelectedValueMemberPath="CategoryID"/>
