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GridViewComboBoxColumn dependant value in MVVM

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didier
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didier asked on 19 May 2011, 03:08 PM
Hi,
I would want to make a gridviewcomboboxcolumn dependant on an another gridviewcomboboxcolumn with the MVVM pattern.
Do you know if it's possible an how i can do that ?
if I use a template i can use a code like this
<telerik:GridViewDataColumn Header="{Binding Path=Strings.RemiseView_EnteteGarantie, Source={StaticResource ApplicationResources}}" IsReadOnly="True" >
    <telerik:GridViewDataColumn.CellTemplate>
        <DataTemplate>
            <telerik:RadComboBox Style="{StaticResource RemiseView_ComboBox}"
                        ItemsSource="{Binding ListGarantie,Source={StaticResource remiseViewModel}}"
                        DisplayMemberPath="Nom"
                        SelectedItem="{Binding SelectedGarantieItem,Mode=TwoWay ,Source={StaticResource remiseViewModel}}"
                        SelectedValue="{Binding GarantieId, Mode=TwoWay}" ClearSelectionButtonContent="Effacer"
                        SelectedValuePath="GarantieId"/>
        </DataTemplate>
    </telerik:GridViewDataColumn.CellTemplate>
with the selecteditem binding on the view model, but it's not really good, if I have two row the filter is bad and it's not a gridviewcomboboxcolumn... 




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Milan
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answered on 20 May 2011, 08:24 AM

Hi didier,

Could you please take a look at this blog post which demonstrates how you can construct the so called Cascading ComboBoxes. 



Best wishes,
Milan
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didier
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answered on 20 May 2011, 02:45 PM
Thanks for the reply but the sample is quite simple.
My dependant combobox are in a grid so i can't "just" change the itemsource list, i thinks it's better to add a filter to the combobox otherwise all the previous rows will be blanks....
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Milan
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didier
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