Select row on WinForm grid with right-click

[Tim Black]

I've searched this forum and have not found a post specific to this issue.  The MouseClick event gives me the e.button property so I know if right button used but no row index.  The CellClick event gives me the Row.Index but not which button clicked. 

Any assistance would be greatly appreciated.  Thanks

[Richard Slade]

Hi Tim, 

You can get this just from the SelectedRows property of the RadGridView
For example

this.radGridView1.SelectionChanged += new EventHandler(radGridView1_SelectionChanged);

void radGridView1_SelectionChanged(object sender, EventArgs e)
{
    if (this.radGridView1.SelectedRows.Count > 0)
    {
      this.Text = this.radGridView1.SelectedRows[0].Index.ToString();
    }

}

If you are using single selection mode, then this will show you the currently selected index of the row which will fire when right clicking as well as left clicking. 

Hope that helps
Richard

[Stefan]

Hello Tim,

Could you please share with us, what exactly is your scenario, so we can point you to the right direction.
 
Kind regards,
Stefan
the Telerik team

[MikeB]

Version 2012.1.321.40 Winform Controls

RadGridView

I have a custom context menu that needs to be displayed only when the user right clicks on a GridDataRow.  I need to know what row the cursor was on when the right mouse button is clicked.  The Cell.Click event args does not include what button was clicked.  The Grid.MouseClick does include the button but the context menu should not be displayed unless a data rows is clicked.

Using the Grid.MouseClick, I haven't found a way to determine what (if any) data row is clicked using the grid mouse click and I can't use the current row.  Basically, if a data row is not clicked (some other part of the grid - header row,etc is clicked) I do not want to display the context menu.

Using the Cell.Click, I cannot determine what button was clicked.  And the Context Menu should not be displayed if the left or center mouse button is clicked.

Is there a way that I can do this?

The Grid.GetChildAtPoint looked promising but it is always null.

This is an application that has been in use for a while and the business users are accustomed to it working this way.  If I have to change the behavior... well you know how that is.

Thanks
Mike 

[Stefan]

Hello Mike,

Thank you for writing.

The correct way to work with the context menu of the grid is to use the ContextMenuOpening event. It is fired when the user right click the grid. In the event handler you can check whether the ContextMenuProvider is GridDataCellElement and of so, a data cell is clicked and modify the context menu (which is available in the ContextMenu property from the event args). Alternatively you can cancel the context menu. Here is an example:

void radGridView1_ContextMenuOpening(object sender, ContextMenuOpeningEventArgs e)
{
    GridDataCellElement dataCellElement = e.ContextMenuProvider as GridDataCellElement;
    if (dataCellElement != null)
    {
        //data cell is clicked

        //here is how to get the clicked row
        GridViewRowInfo clickedRow = dataCellElement.RowInfo;


    }
    else
    {
        //clicked on non data cell, cancel the context menu
        e.Cancel = true;
    }
}

More information about the context menu in the grid can be found in this help section: http://www.telerik.com/help/winforms/gridview-context-menus-modifying-the-default-context-menu.html.

Let us know if you need anything else.

Kind regards,
Stefan
the Telerik team

[MikeB]

Stefan,

Yes, I realized that I was going about it the wrong way and did end up using the ContextMenuOpenening.  I apologize, I should have come back and deleted or edited the post.

Thanks
Mike 

[Stefan]

That's OK Mike. Let us know if you have any other questions.

Kind regards,
Stefan
the Telerik team

[Barış]

Hi, i have the same issue. But openingcontext event dont work for me. But when i right click to a column header cell, my context menu  stil shows. And I dont want it. Is there a way to use "old" mouse_click event and datagridview.hittest like method? Because I want to know excatly where did i click button (x,y) on the grid

Best Regards
Barış

[Stefan]

Hi Barış,

As I previously suggested, the easiest way to handle the context menus in RadGridView is the ContextMenuOpening event. To prevent showing the context menu of the header cells, please consider the following code:

void radGridView1_ContextMenuOpening(object sender, ContextMenuOpeningEventArgs e)
{
    GridHeaderCellElement headerCell = e.ContextMenuProvider as GridHeaderCellElement;
    if (headerCell != null)
    {
        e.Cancel = true; //header cell is clicked, prevent showing the context menu
    }
}

I hope this helps.
 
Regards,
Stefan
Telerik