通过Graphics获取到所属的Control

using System.Runtime.InteropServices;

[DllImport("user32.dll")]

public static extern IntPtr WindowFromDC(IntPtr hDC);

private void button1_Click(object sender, EventArgs e)

{

    Graphics vGraphics = Graphics.FromHwnd(Handle);

    Control vControl = Control.FromHandle(WindowFromDC(vGraphics.GetHdc()));

if (vControl !=null) MessageBox.Show(vControl.Name);

}