.NET WinForm全屏和退出以及蓝屏黑屏等

全屏代码，通过设置背景颜色可以实现蓝屏，黑屏等：

this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
            this.BackColor = Color.Blue;//蓝屏，设置背景颜色  jihua.cnblogs.com

退出全屏代码：

WindowState = FormWindowState.Normal;
            FormBorderStyle = System.Windows.Forms.FormBorderStyle.Sizable;
            BackColor = SystemColors.Control;// 回复默认颜色 jihua.cnblogs.com