How to do a form as fullscreen in c# windows application

Question

hi

 

when i run my form should bein maximize mode, with taskbar everything is noormal. when i start to run my form should be in  fullscreen. how to do i wrote something like

 

private void Form1_Load(object sender, EventArgs e)

{

this.TopMost = true;

this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;

this.WindowState = FormWindowState.Maximized;

}

 

but its not working fine. i am getting problems

iam not unable to see any close mark,min,max symbols 

mysystem is going to hang.not working any keys anyhing not working.

how to solve this anybody help me