Perform action on GroupHeader click

[David Dorst]

Hello there,

I'm using a radGridView and the content comes via dataSource. The content is grouped by an expression, that's all fine so far. Now I need to perform (it would be really nice) an action if the user clicks on the GroupHeaderLine. It should be possible to do an action for the whole group (a menu should open then). Is this possible in Q2 2010?

Greetings

[Emanuel Varga]

Hello David,

I would like to ask you if you could elaborate on this, maybe provide a screenshot or some pieces of code explaining what you want to do, after that i will try to help you with your problem.

Best Regards,
Emanuel Varga

[Svett]

Hello David Dorst,

You can achieve that easily by creating a custom group row behavior where you can handle the keyboard and mouse input. 

public class MyGroupRowBehavior : GridGroupRowBehavior
{
    protected override bool OnMouseDownRight(MouseEventArgs e)
    {
        RadDropDownMenu menu = new RadDropDownMenu();
        menu.Items.Add(new RadMenuItem("MyMenuItem 1"));
        menu.Items.Add(new RadMenuItem("MyMenuItem 2"));
        menu.Show(this.GridViewElement.PointToScreen(e.Location));
        return true;
    }
}

You need to replace the default GridGroupRowBehavior with the a custom one:

BaseGridBehavior gridBehavior = this.radGridView1.GridBehavior as BaseGridBehavior;
gridBehavior.UnregisterBehavior(typeof(GridViewGroupRowInfo));
gridBehavior.RegisterBehavior(typeof(GridViewGroupRowInfo), new MyGroupRowBehavior());

I hope this helps.

Best wishes,
Svett
the Telerik team

[David Dorst]

This works really great :D

Thank you!