How to move a form in windows form 2010

private bool drag;

private Point point;

private void label1_MouseDown(object sender, MouseEventArgs e)

{

if (e.Button == MouseButtons.Left)

{

drag = true;

point = new Point(e.X, e.Y);

}

else

{

drag = false;

}

}

private void label1_MouseMove(object sender, MouseEventArgs e)

{

if (drag)

{

Point poinMoveTo;

poinMoveTo = this.PointToScreen(new Point(e.X, e.Y));

poinMoveTo.Offset(-point.X, -point.Y);

this.Location = poinMoveTo;

}

}

private void label1_MouseUp(object sender, MouseEventArgs e)

{

drag = false;

}

Output should be like this.

when you keep clicking on this label and you can move that form.