C# Soap调用WebService的实例

实例如下所示：

public class WebServiceHelper
 {
  /// <summary>
  /// Soap协议Post方法
  /// </summary>
  /// <param name="uri">WebService地址</param>
  /// <param name="str">传入Soap协议格式数据</param>
  /// <returns></returns>
  public static string SendToReturn(Uri _uri, string _str)
  {
   string _returnstr = "";
   //发起请求
   WebRequest webRequest = WebRequest.Create(_uri);
   webRequest.ContentType = "text/xml; charset=utf-8";
   webRequest.Method = "POST";
   using (Stream requestStream = webRequest.GetRequestStream())
   {
    byte[] paramBytes = Encoding.UTF8.GetBytes(_str);
    requestStream.Write(paramBytes, 0, paramBytes.Length);
   }
   //响应
   try
   {
    WebResponse webResponse = webRequest.GetResponse();
    using (StreamReader myStreamReader = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8))
    {
     _returnstr = myStreamReader.ReadToEnd();
    }
   }
   catch (WebException ex)
   {
    _returnstr = new StreamReader(ex.Response.GetResponseStream()).ReadToEnd();
   }
   return _returnstr;
  }
 }

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