[Solved] GridviewComboBoxColumn not opening

[Chad]

Hi!

Having a problem with a GridviewCombobox column. I am using MVVM and have the Gridview populated. The GridviewComboBoxColumn even populates with the correct value, but when i click on the column, it does not open up the dropdown. I've checked all the properties of the column and the gridview that might cause the column to not be editable and so far no luck. the other fields that are not comboboxcolumns are able to be edited and work just fine. FYI all these controls are Telerik controls, just overloaded. here is my XAML and viewmodel

Namespace ViewModels

    Public Class vm_RatesMaintenance
        Inherits ViewModelBase

        Dim RIA_rates_context As alflex.RIA_rates_service
        Private ReadOnly _Rates As QueryableDomainServiceCollectionView(Of tbl_service_to_ins)


        Public Sub New()
            RIA_rates_context = New alflex.RIA_rates_service()
            Dim GetRatesQuery As EntityQuery(Of tbl_service_to_ins) = RIA_rates_context.GetTbl_service_to_insQuery
            _Rates = New QueryableDomainServiceCollectionView(Of tbl_service_to_ins)(RIA_rates_context, GetRatesQuery)
            _Rates.PageSize = 10
            _Rates.AutoLoad = True
            RIA_rates_context.Load(RIA_rates_context.GetTbl_serviceQuery)

        End Sub

        Public ReadOnly Property Rates() As QueryableDomainServiceCollectionView(Of tbl_service_to_ins)
            Get
                Return Me._Rates
            End Get
        End Property

        Public ReadOnly Property Services() As EntitySet(Of tbl_service)
            Get
                Return RIA_rates_context.tbl_services
            End Get
        End Property
    End Class

<alflexControls:GridView Height="532" AutoGenerateColumns="True" x:Name="RadGridView1" VerticalAlignment="Top" ItemsSource="{Binding Rates}" Margin="0,44,0,0" CanUserFreezeColumns="False" RowIndicatorVisibility="Collapsed">

     <alflexControls:GridView.Columns>

             <alflexControls:GridViewComboBoxColumn DataMemberBinding="{Binding tbl_service.srvc_id, Mode=TwoWay}" ItemsSourceBinding="{Binding Services, Mode=TwoWay, Source={StaticResource vm_RatesMaintenance}}" SelectedValueMemberPath="srvc_id" DisplayMemberPath="rate" Header="Service Code" IsReadOnly="False" ></alflexControls:GridViewComboBoxColumn>

             <alflexControls:GridViewDataColumn DataMemberBinding="{Binding rate}" Header="Rate" IsFilterable="False"/>

             <alflexControls:GridViewDataColumn DataMemberBinding="{Binding unit_time}" Header="Unit Time" IsFilterable="False"/>

             <alflexControls:GridViewDataColumn DataMemberBinding="{Binding session_units}" Header="session_units" IsFilterable="False"/>

             <alflexControls:GridViewDataColumn DataMemberBinding="{Binding is_daily_srvc}" Header="is_daily_srvc" IsFilterable="False"/>

         </alflexControls:GridView.Columns>

     </alflexControls:GridView>

[Vanya Pavlova]

Hi Chad,

 
You should use ItemsSource rather than ItemsSourceBinding:

<alflexControls:GridViewComboBoxColumn DataMemberBinding="{Binding tbl_service.srvc_id, Mode=TwoWay}" ItemsSource="{Binding Services, Mode=TwoWay, Source={StaticResource vm_RatesMaintenance}}" SelectedValueMemberPath="srvc_id" DisplayMemberPath="rate" Header="Service Code" IsReadOnly="False" ></alflexControls:GridViewComboBoxColumn>

Regards,
Vanya Pavlova
the Telerik team

[Chad]

Hi Vanya,

Thanks for the reply. I had already tried ItemSource and it was unsucessful.

But the good news is i found the issue. We apparently mis-named either the selectedValuepath or DisplayMemberPath. We think this caused the dropdown to not be editable.

Thanks for your help!