C# winform 程序窗口不显示在任务栏及alt+tab不显示

1.winform窗口不显示在任务栏

this.ShowInTaskbar = false; 

2.winform窗口alt+tab不显示

	/// <summary> 	/// 让程序不显示在alt+Tab视图窗体中 	/// </summary> 	protected override CreateParams CreateParams         {             get             {                 const int WS_EX_APPWINDOW = 0x40000;                 const int WS_EX_TOOLWINDOW = 0x80;                 CreateParams cp = base.CreateParams;                 cp.ExStyle &= (~WS_EX_APPWINDOW);                 cp.ExStyle |= WS_EX_TOOLWINDOW;                 return cp;             }         }