c#移动无边框窗体

 //[DllImport("user32.dll")]
        //public static extern bool ReleaseCapture();
        //[DllImport("user32.dll")]
        //public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
        //public const int WM_SYSCOMMAND = 0x0112;
        //public const int SC_MOVE = 0xF010;
        //public const int HTCAPTION = 0x0002;


        //private void Frm_AdvisementDetection_MouseDown(object sender, MouseEventArgs e)
        //{
        //    ReleaseCapture();
        //    SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0); 

        //}   

在窗体类中加入如下代码：

 using System.Runtime.InteropServices;

     [DllImport("user32.dll")]
     public static extern bool ReleaseCapture();
     [DllImport("user32.dll")]
     public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
     public const int WM_SYSCOMMAND = 0x0112;
     public const int SC_MOVE = 0xF010;
     public const int HTCAPTION = 0x0002;

然后，在窗体的MouseDown事件中加入以下两句：

    ReleaseCapture(); 
    SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0); 
就搞定了。