filter popup

Hello,
Sorry, but this behavior is by design and we don't plan to change it in the future. However, if you want, you can use a workaround to solve this task. Please see the following code:

C#
void MyTableView_ShowFilterPopup(object sender, FilterPopupEventArgs e) {  
     List<object> list = new List<object>();  
     object[] objs = myTableView.GetUniqueColumnValues(e.Column, false);  

     foreach(CustomComboBoxItem item in e.ComboBoxEdit.ItemsSource)  
          if(objs.Contains(item.EditValue))  
               list.Add(item);  

     e.ComboBoxEdit.ItemsSource = list;  
}  
...  
public class MyTableView : TableView {  
     public object[] GetUniqueColumnValues(GridColumn column, bool includeFilteredOut) {  
          return DataProvider.GetUniqueColumnValues(column, includeFilteredOut, true);  
     }  
}  
...  

Hope this helps.
Best regards, Alan.
R&D, .NET Team.

Thanks so much Alan for the confirmation and the code, i found it is so useful ;)
Best,
Longchrea NEAK

Hello,
I'm glad to be of help! Please feel free to contact us in case of any difficulty - we'll be happy to help you.
Best regards, Alan.
R&D, .NET Team.