C# 模拟post表单

//POST数据
        public static string PostData(string url, string data)
        {
            WebClient wc = new WebClient();
            wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            byte[] postData = Encoding.Default.GetBytes(data);
            byte[] responseData = wc.UploadData(url, "POST", postData);
            return Encoding.UTF8.GetString(responseData);
        }

        //调用示例

            string strReturn = PostData("http://www.chinavb.net/manage/add.aspx", "mode=add&username=张三&msg=成功发表日志"