C#的wsdlSOAP请求

以下是使用C#的wsdlSOAP请求的示例代码：

using System;
using System.IO;
using System.Net;
using System.Text;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string url = "http://www.example.com/Service.asmx";
            string soapStr = @"<?xml version=""1.0"" encoding=""utf-8""?>
                                <soap:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" 
                                xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" 
                                xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/"">
                                  <soap:Body>
                                    <Add xmlns=""http://www.example.com/"">
                                      <a>1</a>
                                      <b>2</b>
                                    </Add>
                                  </soap:Body>
                                </soap:Envelope>";
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "text/xml;charset=utf-8";
            request.Headers.Add("SOAPAction", "http://www.example.com/Add");
            request.ContentLength = soapStr.Length;
            using (Stream stream = request.GetRequestStream())
            {
                byte[] bytes = Encoding.UTF8.GetBytes(soapStr);
                stream.Write(bytes, 0, bytes.Length);
            }
            using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
            {
                using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
                {
                    string result = reader.ReadToEnd();
                    Console.WriteLine(result);
                }
            }
        }
    }
}

上述代码中，我们首先定义了请求的URL和SOAP请求的XML字符串。然后，我们创建了一个HttpWebRequest对象，并设置了请求的方法、内容类型、SOAPAction头和请求体的长度。接下来，我们将SOAP请求的XML字符串转换为字节数组，并将其写入请求流中。最后，我们使用HttpWebResponse对象获取响应，并将响应流中的内容读取为字符串并输出。