[Solved] How to create double click behavior and bind to GridView cell?

[Andrew Chan]

Hi there,

In my project, I need to call a command in my viewmodel when the user click on those cells in the particular column of the GridView. I found GridViewCell supports CellDoubleClickEvent andI would like to use behavior to accomplish it since it's more testable. Could you provide me some ideas how to do it? How to attach the behavior to cell level?

Thanks.

Regards,
Andrew

[Milan]

Hi Andrew Chan,

You can subscribe to this double click event in the following

public Example()
       {
           this.InitializeComponent();

           this.RadGridView1.AddHandler(GridViewCellBase.CellDoubleClickEvent, new EventHandler<RadRoutedEventArgs>(OnCellDoubleClick), true);
       }

       private void OnCellDoubleClick(object sender, RadRoutedEventArgs args)
       {
           GridViewCellBase cell = args.OriginalSource as GridViewCellBase;
           if (cell != null)
           {
               this.ClickedCell = cell;
           }
       }

way:

Best wishes,
Milan
the Telerik team

[Andrew Chan]

Hi Milan,

Thanks for your suggestion. However, I would like to achieve using behavior (InvokeCommandAction) and Command.

Can I do something similar as below?

            <i:Interaction.Triggers>
                <i:EventTrigger EventName="CellDoubleClickEvent">
                    <i:InvokeCommandAction Command="{Binding NewEntityCommand}"/>
                </i:EventTrigger>
            </i:Interaction.Triggers>

Regards,
Andrew

[Maya]

Hi Andrew Chan,

In order to meet your requirements a couple of things need to be done. Firstly, a new class inheriting the EventTriggerBase is to be created and it has to expose a RoutedEvent Property. Furthermore, due to some limitations in the Framework, another class - GridViewEvents is to be added whose only functionality is to expose a CellDoubleClick Property of type RoutedEvent. Once created in the code-behind, you have to set them in the xaml file - just in the way you want it with the only difference that you are using the custom RoutedEventTrigger class instead of the EventTrigger one.
I am sending you a sample project illustrating the proposed solution.

Greetings,
Maya
the Telerik team