public Form1()
        {
            InitializeComponent();
            int x = this.Location.X+10;
            int y = this.Location.Y+10;
            int height = this.Size.Height, width = this.Size.Width;
            Bitmap bm = new Bitmap(height, width);
            Graphics g = Graphics.FromImage(bm);

            g.Clear(Color.White);
            Pen p = new Pen(Color.Black, 1);
        // LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, bm.Width, bm.Height),Color.Blue, Color.BlueViolet, 1.2f, true);

            g.FillRectangle(Brushes.White, x, y, width, height);
            g.DrawRectangle(new Pen(Color.Blue), 0, 0, bm.Width - 1, bm.Height - 1);
            g.DrawLine(p, x, y, x, y + 140);
            g.DrawLine(p, x, y, x + 140, y);
        }