Winforms gridview Keeping default context menu for header row, while having custom context menu for data rows

[Richard]

Hi all - I need to retain the default context menu available when right clicking in the header row.  I really don't want to have to re-create all the menus and what-not.  I know exactly where I need to do this decision (in the ContextMenuOpening call), but I can't figure out how to determine if the rightclick happened in the header row or not.

Can you suggest how I can replace the commented out code so this works?   Thanks!  Richard


void radGridView1_ContextMenuOpening(object sender, ContextMenuOpeningEventArgs e)
{
       //if ( mouse was clicked in the header row )
      // {
       // do nothing, we like the existing menu for that and don't want to reimplement it
      // } else

       if (radGridView1.SelectedRows.Count == 1)
       {
           e.ContextMenu = SingleRowSelectedcontextMenu.DropDown;
           cell = e.ContextMenuProvider as GridDataCellElement;
       }
       else if (radGridView1.SelectedRows.Count >= 1)
       {
            e.ContextMenu = MultiRowSelectedcontextMenu.DropDown;
            cell = e.ContextMenuProvider as GridDataCellElement;
        }
}

[Dess | Tech Support Engineer, Principal]

Hello Richard,

Thank you for writing.

As you have already found out, the ContextMenuOpening event is the appropriate place to customize the drop down items. Here is a sample code snippet demonstrating how to determine the cell over which the context menu is opening and how to modify the items:

private void radGridView1_ContextMenuOpening(object sender, ContextMenuOpeningEventArgs e)
{
    Point pt = this.radGridView1.PointToClient(MousePosition);
    GridDataCellElement dataCell = this.radGridView1.ElementTree.GetElementAtPoint(pt) as GridDataCellElement;
    if (dataCell != null)
    {
        //if you right click over a data cell, customize the items in the menu
        e.ContextMenu.Items.Clear();
        e.ContextMenu.Items.Add(new RadMenuItem("Item"));
    }
}

I hope this information helps. Should you have further questions, I would be glad to help.

Regards,
Desislava
Telerik

 

 

[Richard]

Perfect, exactly what I needed!  Thanks for saving me a bunch of time!
Richard

[Jeremy]

Hi,

How can I accurately identify the difference between right clicking on a cell/row that contains the filter criteria vs. the cell/row that contains the column header vs. the cell/row that contains the actual data?

[Dess | Tech Support Engineer, Principal]

Hello guys,

Thank you for writing.

@Richard,
I am glad that the suggested solution suits your scenario. If you have any additional questions, please let me know.

@Jeremy
Here is a sample code snippet, demonstrating how to distinguish for which cell element the context menu is opening when pressing right mouse button. Similar approach can be used in the MouseDown event:

private void radGridView1_ContextMenuOpening(object sender, ContextMenuOpeningEventArgs e)
{
    Point pt = this.radGridView1.PointToClient(MousePosition);
    GridDataCellElement dataCell = this.radGridView1.ElementTree.GetElementAtPoint(pt) as GridDataCellElement;
    GridFilterCellElement filterCell = this.radGridView1.ElementTree.GetElementAtPoint(pt) as GridFilterCellElement;
    GridHeaderCellElement headerCell = this.radGridView1.ElementTree.GetElementAtPoint(pt) as GridHeaderCellElement;
    if (dataCell != null)
    {
        //if you right click over a data cell
    }
    else if (filterCell != null)
    {
        //if you right click over a filter cell
    }
    else if (headerCell!=null)
    {
        //if you right click over a header cell
    }
}

I hope this information helps. Should you have further questions, I would be glad to help.

Regards,
Desislava
Telerik