[Form] Close Form
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern bool EndWindow(IntPtr hDlg, out IntPtr nResult);
//使用方式
IntPtr dig = FindWindow(null, Form.name);
if(dig != IntPtr.ZERO)
{
IntPtr resurt;
EndWindow(dig, out result);
}