application/x-www-form-urlencoded");//采取POST方式必须加的header,如果改为GET方式的话就去掉这句话即可 byte[] responseData = webClient.UploadData
Encoding.ASCII.GetBytes(postString); // 上传数据,返回页面的字节数组 responseData = webClient.UploadData
WebClient(); 8 webClient.Headers.Add("Content-Type", mediaType); 9 byte[] responseData = webClient.UploadData