RadGridView Multiple selection by holding the left mouse button

[Paul]

Hi,

I set SelectionMode = Extended;

If I select a new item of the grid and try to select multiple rows holding the left mouse button everything working as expected (grid select multiple rows). 

But If I select selected row of the grid and try to select multiple rows holding the left mouse button the new selected rows won't be selected. 
How can I implement this behavior?

[Yoan]

Hi,

You can try to clear the selected items of the grid in PreviewMouseLeftButtonDown event. Please check the following code snippet for a reference:

private void clubsGrid_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            this.radGridView1.SelectedItems.Clear();
        }

Regards,
Yoan
Telerik