How to grab web page in chinese

try{//get date from web url// Create a new WebClient instance.WebClient myWebClient = new WebClient();// Download the Web resource and save it into a data buffer.byte[] myDataBuffer = myWebClient.DownloadData (this.textBox2.Text);// Display the downloaded data.//string download = System.Text.Encoding.ASCII.GetString(myDataBuffer);string download = System.Text.Encoding.GetEncoding("GB2312").GetString(myDataBuffer);richTextBox1.Text=download;}catch(Exception _e){MessageBox.Show(_e.Message);}