Screen Resolution vs application

See more:

C#3.0

C#

Hello Friends

How to adjust screen resolution automatically for windows application. i want to try like this :

this.Location = new Point(0, 0);

//this.Height = System.Windows.Forms.Screen.AllScreens[0].WorkingArea.Height;
//this.Width = System.Windows.Forms.Screen.AllScreens[0].WorkingArea.Width;

            int iWindowWidth = Screen.PrimaryScreen.Bounds.Width;
            int iWindowHeight = Screen.PrimaryScreen.Bounds.Height;
            this.Size = new Size(iWindowWidth, iWindowHeight);

but it is not working
please help me.