如何设置webbrowser控制里面所显示网页的编码

Question

EncodingInfo[] Encodes = Encoding.GetEncodings();            foreach (EncodingInfo Encode in Encodes)
            {
                if (Encode.Name == "gb2312")
                {
                    MessageBox.Show("程序执行到这里.");
                    MessageBox.Show(Encode.GetEncoding().ToString());
                    webBrowser1.Document.Encoding = Encode.GetEncoding().ToString();
                    
                    return;
                }
            }MessageBox.Show(Encode.GetEncoding().ToString());这一句却是显示System.Text.DBCSCodePageEncoding.为什么会显示这句而且这样设置也不行...