WPF using ResizeGrip to resize controls

Question

I want that the user can resize a control by draging a resize-grip on the lower right border. With the ResizeGrip there seems to exists the perfect control for

Answer 1

Ok, I got bored last night and wrote a little sample for you using Thumb. You should be able to Copy/Paste/Compile/Run.

But basically, I created a UserControl named DialogReplica, just something that looks like a dialog with a grip, you can see it thrown in the main window.

Here's the xaml for the UserControl (you mostly interested in the Thumb part):

finally, here's the code behind for the UserControl

public partial class DialogReplica : UserControl
{
    private Cursor _cursor;

    public DialogReplica()
    {
        InitializeComponent();
    }

    private void OnResizeThumbDragStarted(object sender, DragStartedEventArgs e)
    {
        _cursor = Cursor;
        Cursor = Cursors.SizeNWSE;
    }

    private void OnResizeThumbDragCompleted(object sender, DragCompletedEventArgs e)
    {
        Cursor = _cursor;
    }

    private void OnResizeThumbDragDelta(object sender, DragDeltaEventArgs e)
    {
        double yAdjust = sizableContent.Height + e.VerticalChange;
        double xAdjust = sizableContent.Width + e.HorizontalChange;

        //make sure not to resize to negative width or heigth            
        xAdjust = (sizableContent.ActualWidth + xAdjust) > sizableContent.MinWidth ? xAdjust : sizableContent.MinWidth;
        yAdjust = (sizableContent.ActualHeight + yAdjust) > sizableContent.MinHeight ? yAdjust : sizableContent.MinHeight;

        sizableContent.Width = xAdjust;
        sizableContent.Height = yAdjust;
    }
}