[Solved] Customize GridView Row Validation using MVVM

[gautham]

Hello,

      Please help to customize row Validation using MVVM, without using RIA service.

     1) I want to validate the entered data on row as per my requirement.

      2) I am using DataTemplate.

    >  I have presented small code snippet of XAML

  

<syncControls:GridView ItemSource="{Binding MyItemSource}"

<syncControls:GridView.Columns>



<syncControls:GridViewDataColumn Header="Location Type" DataMemberBinding="{Binding LocationTypeCode, Mode=TwoWay, NotifyOnValidationError=true, ValidatesOnExceptions=true}">

<syncControls:GridViewDataColumn.CellTemplate>

<DataTemplate>

<TextBlock Text="{Binding LocationType, Mode=TwoWay}"/>

</DataTemplate>

</syncControls:GridViewDataColumn.CellTemplate>

<syncControls:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<syncControls:ComboBox x:Name="uvLocationTypes" ItemsSource="{Binding LocationTypes, Mode=TwoWay}"

DisplayMemberPath="Value" SelectedValuePath="Key" SelectedValue="{Binding LocationTypeCode, Mode=TwoWay}">

</syncControls:ComboBox>

</DataTemplate>

</syncControls:GridViewDataColumn.CellEditTemplate>

</syncControls:GridViewDataColumn>


</syncControls:GridView.Columns>


</syncControls:GridView

[Yavor Georgiev]

Hi gautham,

 You can use the INotifyDataErrorInfo to perform validation directly in your model. This approach is detailed in this blog post. RadGridView is compatible with this interface, so that whatever errors it raises will show up in the UI.

All the best,
Yavor Georgiev
the Telerik team

[gautham]

Hello Yavor,

 I am not looking for RIA service based validation. The example you are presented using RIA service. Please help me  to validate without using RIA.

Regards,
Gautham

,

[Yavor Georgiev]

Hi gautham,

 You don't need RIA services to implement INotifyDataErrorInfo. You can check out the attached sample. Even though it is for WPF, the same code will work for Silverlight.

Kind regards,
Yavor Georgiev
the Telerik team

[gautham]

Hello,

Thank-you very much.
Regards,
Gautham