【未解决】C#中如何调用wsdl的服务接口

1.webservice帮助类
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public class WebServiceHelper
    {       
        public static string CallServiceByGet(string strURL)
        {   
            //string strURL = "http://localhost:12074/Service1.asmx/GetProductPrice?ProductId=";
            //strURL += this.textBox1.Text;
            //创建一个HTTP请求
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL);
            //request.Method="get";
            HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
            Stream s = response.GetResponseStream();
            //转化为XML，自己进行处理
            XmlTextReader Reader = new XmlTextReader(s);
            Reader.MoveToContent();
            string strValue = Reader.ReadInnerXml();
            Reader.Close();
            strValue = strValue.Replace("<", "<");
            strValue = strValue.Replace(">", ">");
            return strValue;
        }
        public static string CallServiceByPost(string strURL,System.Collections.Specialized.StringDictionary parameters)
        {      
            //string strURL = "http://localhost:12074/Service1.asmx/GetProductPrice";     
            //创建一个HTTP请求
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL);
            //Post请求方式
            request.Method = "POST";
            //内容类型
            request.ContentType = "application/x-www-form-urlencoded";
            //设置参数，并进行URL编码
            StringBuilder codedString = new StringBuilder();
            foreach (string key in parameters.Keys)
            {
                codedString.Append(HttpUtility.UrlEncode(key));
                codedString.Append("=");
                codedString.Append(HttpUtility.UrlEncode(parameters[key]));
                codedString.Append("&");
            }
            string paraUrlCoded = codedString.Length == 0 ? string.Empty:codedString.ToString().Substring(0, codedString.Length - 1);
            //string paraUrlCoded = HttpUtility.UrlEncode("ProductId");
            //paraUrlCoded += "=" + HttpUtility.UrlEncode(this.textBox1.Text);
            byte[] payload;
            //将URL编码后的字符串转化为字节
            payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
            //设置请求的ContentLength
            request.ContentLength = payload.Length;
            //发送请求，获得请求流
            Stream writer = request.GetRequestStream();
            //将请求参数写入流
            writer.Write(payload, 0, payload.Length);
            //关闭请求流
            writer.Close();
            //获得响应流
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream s = response.GetResponseStream();
            //转化为XML，自己进行处理
            XmlTextReader Reader = new XmlTextReader(s);
            Reader.MoveToContent();
            string strValue = Reader.ReadInnerXml();
            Reader.Close();
            strValue = strValue.Replace("<", "<");
            strValue = strValue.Replace(">", ">");             
            return strValue;
        }   
    }

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2.webservice方法
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/// <summary>
    /// Service1 的摘要说明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [ToolboxItem(false)]
    public class Service1 : System.Web.Services.WebService
    {
        [WebMethod]
        public string HelloWorld1()
        {
            return "Hello World";
        }


        [WebMethod]
        public string HelloWorld2(string p1,string p2)
        {
            return string.Concat("Hello World", ",", p1, ",", p2);
        }
        [WebMethod]
        public string HelloWorld3(string datetime)
        {
            return string.Concat("Hello World", " today is ", datetime);
        }
    }

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