Issues with the GridViewComboBoxColumn

[Stefan Kamphuis]

Hello,

I have an issue where I need some help. I am creating an WPF MVVM application. I have a view with in it displayed a RadGridView. One of the columns of this gridview is a GridViewComboBoxColumn. See code

<telerik:RadGridView x:Name="GridView"
    ItemsSource="{Binding DataContext.ObservDistributions, ElementName=DistributionView}"
    AutoGenerateColumns="False"
    CanUserFreezeColumns="False"
    acb:CommandBehavior.Event="MouseDoubleClick"
    acb:CommandBehavior.Command="{Binding SelectCurrentDistributionCommand}"
    acb:CommandBehavior.CommandParameter="{Binding ElementName=GridView, Path=SelectedItem}">
        <telerik:RadGridView.Columns>
        <telerik:GridViewDataColumn Header="Name" DataMemberBinding="{Binding Name}" IsReadOnly="True" />
        <column:DateTimePickerColumn Header="Date" DataMemberBinding="{Binding DateFrom}" Width="200"></column:DateTimePickerColumn>
        <telerik:GridViewComboBoxColumn Header="Establishment" ItemsSource="{Binding DataContext.Establishments, ElementName=DistributionView}" SelectedValueMemberPath="EstablishmentId" DisplayMemberPath="Name" DataMemberBinding="{Binding Establishment.EstablishmentId, Mode=TwoWay}">
        </telerik:GridViewComboBoxColumn>
    </telerik:RadGridView.Columns>
</telerik:RadGridView>

              
I have in the ViewModel a ObservableCollection named "ObservDistributions". This all works perfectly. The issue is where I change the value of the GridViewComboBoxColumn. I use MouseDoubleClick to send the changes from the View to the ViewModel.  In the acb:CommandBehavior.CommandParameter I sent the item to the ViewModel with a command. This all works but not for the GridViewComboBoxColumn. The changes made to the GridViewComboBoxColumn are not sent to the ViewModel. I think the issue is with the DataMemberBinding in the GridViewComboBoxColumn. I have used the DateTimePickerColumn from Telerik, changes made with this control works fine.

Does anyone have some hint in what direction to look.

Thanx in advance

Stefan

[Pavel Pavlov]

Hi Stefan Kamphuis,

I am trying to reproduce the issue here. May I have a look at the implementation of your ViewModel ?
By the way the DataMemberBinding of the combo column itself seems OK.  So we should seek the problem somewhere else.

All the best,
Pavel Pavlov
the Telerik team

[Stefan Kamphuis]

After a good night sleep, I changed the way the screen is build and this issue has solved itself.

Stefan

[Kareem Azzouny]

could you please provide me with the code because i have the same situation here 
Regards