Winform窗体移动

        private Point point;
        private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            point = new Point(e.X, e.Y);
        }

        private void Form1_MouseMove(object sender, MouseEventArgs e)
        {
            if (e.Button==MouseButtons.Left)
            {
                this.Location = new Point(this.Location.X + e.X - point.X, 
                    this.Location.Y + e.Y - point.Y);
            }
        }

即可