How to Send and Receive SOAP Requests in C#?
Send and receive SOAP requests using C#
This article describes how to create a C# client (developed as a Windows service) that sends a SOAP request to a web service and waits for the corresponding response.
Detailed code explanation
The following code example shows how to create a SOAP request and its corresponding response:
using System.Xml; using System.Net; using System.IO; public static void CallWebService() { string url = "http://xxxxxxxxx/Service1.asmx"; string action = "http://xxxxxxxx/Service1.asmx?op=HelloWorld"; XmlDocument soapEnvelopeXml = CreateSoapEnvelope(); HttpWebRequest webRequest = CreateWebRequest(url, action); InsertSoapEnvelopeIntoWebRequest(soapEnvelopeXml, webRequest); webRequest.BeginGetResponse(null, null).AsyncWaitHandle.WaitOne(); // 开始异步调用 Web 请求。 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( //... (XML 定义已省略) return soapEnvelopeDocument; } private static void InsertSoapEnvelopeIntoWebRequest(XmlDocument soapEnvelopeXml, HttpWebRequest webRequest) { using (Stream stream = webRequest.GetRequestStream()) { soapEnvelopeXml.Save(stream); } }
In this example:
CreateSoapEnvelope()
Creates the requested SOAP envelope.CreateWebRequest()
Set up web requests with appropriate headers and configuration.InsertSoapEnvelopeIntoWebRequest()
Insert a SOAP envelope into the request.BeginGetResponse()
andEndGetResponse()
are used for asynchronous SOAP request handling.
Another implementation suggestion
Another common approach involves using the WebRequest
and WebResponse
classes:
protected virtual WebRequest CreateRequest(ISoapMessage soapMessage) { WebRequest wr = WebRequest.Create(soapMessage.Uri); wr.ContentType = "text/xml;charset=utf-8"; wr.ContentLength = soapMessage.ContentXml.Length; wr.Headers.Add("SOAPAction", soapMessage.SoapAction); wr.Credentials = soapMessage.Credentials; wr.Method = "POST"; wr.GetRequestStream().Write(Encoding.UTF8.GetBytes(soapMessage.ContentXml), 0, soapMessage.ContentXml.Length); return wr; } public interface ISoapMessage { string Uri { get; } string ContentXml { get; } string SoapAction { get; } ICredentials Credentials { get; } }
This implementation provides a more direct way to handle SOAP requests.
The above is the detailed content of How to Send and Receive SOAP Requests in C#?. For more information, please follow other related articles on the PHP Chinese website!

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