客户端将SOAP请求发送到Web服务

Question

我正在尝试将SOAP请求发送到我的Web服务，并且从这个问题开始- 客户端发送SOAP请求并收到响应

我得到了这段代码：

using System.Xml;
using System.Net;
using System.IO;

public static void CallWebService()
{
var _url = "http://xxxxxxxxx/Service1.asmx";
var _action = "http://xxxxxxxx/Service1.asmx?op=HelloWorld";

XmlDocument soapEnvelopeXml = CreateSoapEnvelope();
HttpWebRequest webRequest = CreateWebRequest(_url, _action);
InsertSoapEnvelopeIntoWebRequest(soapEnvelopeXml, webRequest);

// begin async call to web request.
IAsyncResult asyncResult = webRequest.BeginGetResponse(null, null);

// suspend this thread until call is complete. You might want to
// do something usefull here like update your UI.
asyncResult.AsyncWaitHandle.WaitOne();

// get the response from the completed web request.
string soapResult;
using (WebResponse webResponse = webRequest.EndGetResponse(asyncResult))
{
    using (StreamReader rd = new StreamReader(webResponse.GetResponseStream()))
    {
        soapResult = rd.ReadToEnd();
    }
    Console.Write(soapResult);        
}
}

private static HttpWebRequest CreateWebRequest(string url, string action)
{
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Headers.Add("SOAPAction", action);
webRequest.ContentType = "text/xml;charset=\"utf-8\"";
webRequest.Accept = "text/xml";
webRequest.Method = "POST";
return webRequest;
}

private static XmlDocument CreateSoapEnvelope()
{
    XmlDocument soapEnvelopeDocument = new XmlDocument();
soapEnvelopeDocument.LoadXml(@"<SOAP-ENV:Envelope xmlns:SOAP-ENV=""http://schemas.xmlsoap.org/soap/envelope/"" xmlns:xsi=""http://www.w3.org/1999/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/1999/XMLSchema""><SOAP-ENV:Body><HelloWorld xmlns=""http://tempuri.org/"" SOAP-ENV:encodingStyle=""http://schemas.xmlsoap.org/soap/encoding/""><int1 xsi:type=""xsd:integer"">12</int1><int2 xsi:type=""xsd:integer"">32</int2></HelloWorld></SOAP-ENV:Body></SOAP-ENV:Envelope>");
return soapEnvelopeDocument;
}

private static void InsertSoapEnvelopeIntoWebRequest(XmlDocument soapEnvelopeXml, HttpWebRequest webRequest)
{
using (Stream stream = webRequest.GetRequestStream())
{
    soapEnvelopeXml.Save(stream);
}
} 

但这对我不起作用，它说没有为GetRequestStream（）和Headers定义，您在HttpWebRequest下添加SOAPAction，有人可以帮助我解决这个问题吗？

编辑：错误发生在行上

using (Stream stream = webRequest.GetRequestStream())

它给出了错误

错误CS1061'HttpWebRequest'不包含'GetRequestStream'的定义，并且找不到扩展方法'GetRequestStream'接受类型为'HttpWebRequest'的第一个参数（您是否缺少using指令或程序集引用？）

还有另一个错误

 webRequest.Headers.Add("SOAPAction", action);

它给出了错误

错误CS1929'WebHeaderCollection'不包含'Add'的定义，最佳扩展方法重载'SettersExtensions.Add（IList，BindableProperty，object）'需要类型为'IList'的接收者

Answer 1

用于添加标题：

webRequest.Headers["HeaderToken"] = "HeaderValue";

对于GetRequestStream使用：

using (var stream = await Task.Factory.FromAsync<Stream>(webRequest.BeginGetRequestStream, webRequest.EndGetRequestStream, null))
                    {
                        reqBody.Save(stream);
                    }