Prevent GridView Column Resize on Mouse Double-Click

Updated on Sep 15, 2025

Environment

Product Version	2022.2 621
Product	RadGridView for WPF

Description

RadGridView column resizes, when a double-click is performed between the header cells.

Solution

1. Add a new event handler for the PreviewMouseDoubleClick event of the GridViewHeaderCell element via the AddHandler method.

Add a new event handler for the PreviewMouseDoubleClick of the GridViewHeaderCell element

C#

    this.AddHandler(GridViewHeaderCell.PreviewMouseDoubleClickEvent, new MouseButtonEventHandler(OnPreviewMouseDoubleClick));

VB.NET

    Me.AddHandler(GridViewHeaderCell.PreviewMouseDoubleClickEvent, New MouseButtonEventHandler(OnPreviewMouseDoubleClick))

2. In the new event handler, set the e.Handled property to true, if the e.OriginalSource is of type Border.

Prevent the PreviewMouseDoubleClick event from bubbling if the OriginalSource is of type Border

C#

    private void OnPreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
    {
        if (e.OriginalSource is Border)
        {
            e.Handled = true;
        } 
    }

VB.NET

    Private Sub OnPreviewMouseDoubleClick(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
        If TypeOf e.OriginalSource Is Border Then
            e.Handled = True
        End If
    End Sub