C# 调用webservice 几种办法（转载）

原文地址： http://www.cnblogs.com/eagle1986/archive/2012/09/03/2669699.html

//=================================================================================================

动态调用示例：

方法一：

看到很多动态调用WebService都只是动态调用地址而已，下面发一个不光是根据地址调用，方法名也可以自己指定的,主要原理是根据指定的WebService地址的WSDL,然后解析模拟生成一个代理类,通过反射调用里面的方法：

using System;

using System.IO;

using System.Collections.Generic;

using System.Linq;

using System.Collections;

using System.Web;

using System.Net;

using System.Reflection;

using System.CodeDom;

using System.CodeDom.Compiler;

using System.Web.Services;

using System.Text;

using System.Web.Services.Description;

using System.Web.Services.Protocols;

using System.Xml.Serialization;

using System.Windows.Forms;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            WebClient client = new WebClient();

            String url = "http://localhost:3182/Service1.asmx?WSDL";//这个地址可以写在Config文件里面，这里取出来就行了.在原地址后面加上： ?WSDL

            Stream stream = client.OpenRead(url);

            ServiceDescription description = ServiceDescription.Read(stream);

            ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//创建客户端代理代理类。

            importer.ProtocolName = "Soap"; //指定访问协议。

            importer.Style = ServiceDescriptionImportStyle.Client; //生成客户端代理。

            importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties | CodeGenerationOptions.GenerateNewAsync;

            importer.AddServiceDescription(description, null, null); //添加WSDL文档。

            CodeNamespace nmspace = new CodeNamespace(); //命名空间

            nmspace.Name = "TestWebService";

            CodeCompileUnit unit = new CodeCompileUnit();

            unit.Namespaces.Add(nmspace);

            ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit);

            CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");

            CompilerParameters parameter = new CompilerParameters();

            parameter.GenerateExecutable = false;

            parameter.OutputAssembly = "MyTest.dll";//输出程序集的名称

            parameter.ReferencedAssemblies.Add("System.dll");

            parameter.ReferencedAssemblies.Add("System.XML.dll");

            parameter.ReferencedAssemblies.Add("System.Web.Services.dll");

            parameter.ReferencedAssemblies.Add("System.Data.dll");

            CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit);

            if (result.Errors.HasErrors)

            {

                // 显示编译错误信息

            }

            Assembly asm = Assembly.LoadFrom("MyTest.dll");//加载前面生成的程序集

            Type t = asm.GetType("TestWebService.TestWebService");

            object o = Activator.CreateInstance(t);

            MethodInfo method = t.GetMethod("GetPersons");//GetPersons是服务端的方法名称,你想调用服务端的什么方法都可以在这里改,最好封装一下

            String[] item = (String[])method.Invoke(o, null);

            //注：method.Invoke(o, null)返回的是一个Object,如果你服务端返回的是DataSet,这里也是用(DataSet)method.Invoke(o, null)转一下就行了,method.Invoke(0,null)这里的null可以传调用方法需要的参数,string[]形式的

            foreach (string str in item)

                Console.WriteLine(str);

            //上面是根据WebService地址，模似生成一个代理类,如果你想看看生成的代码文件是什么样子，可以用以下代码保存下来，默认是保存在bin目录下面

            TextWriter writer = File.CreateText("MyTest.cs");

            provider.GenerateCodeFromCompileUnit(unit, writer, null);

            writer.Flush();

            writer.Close();

        }

    }

}

在网上找了一个更为详细的

http://blog.csdn.net/ysq5202121/article/details/6942813

方法二：利用 wsdl.exe生成webservice代理类:

根据提供的wsdl生成webservice代理类，然后在代码里引用这个类文件。

步骤：1、在开始菜单找到 Microsoft Visual Studio 2010 下面的Visual Studio Tools ，点击Visual Studio 命令提示(2010)，打开命令行。

2、在命令行中输入： wsdl /language:c# /n:TestDemo /out:d:/Temp/TestService.cs http://jm1.services.gmcc.net/ad/Services/AD.asmx?wsdl

这句命令行的意思是：对最后面的服务地址进行编译，在D盘temp 目录下生成testservice文件。

3、把上面命令编译后的cs文件，复制到我们项目中，在项目代码中可以直接new 一个出来后，可以进行调用。

贴出由命令行编译出来的代码：

//------------------------------------------------------------------------------

// <auto-generated>

//     此代码由工具生成。

//     运行时版本:4.0.30319.225

//

//     对此文件的更改可能会导致不正确的行为，并且如果

//     重新生成代码，这些更改将会丢失。

// </auto-generated>

//------------------------------------------------------------------------------

//

// 此源代码由 wsdl 自动生成, Version=4.0.30319.1。

//

namespace Bingosoft.Module.SurveyQuestionnaire.DAL {

    using System;

    using System.Diagnostics;

    using System.Xml.Serialization;

    using System.ComponentModel;

    using System.Web.Services.Protocols;

    using System.Web.Services;

    using System.Data;

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.ComponentModel.DesignerCategoryAttribute("code")]

    [System.Web.Services.WebServiceBindingAttribute(Name="WebserviceForILookSoap", Namespace="http://tempuri.org/")]

    public partial class WebserviceForILook : System.Web.Services.Protocols.SoapHttpClientProtocol {

        private System.Threading.SendOrPostCallback GetRecordNumOperationCompleted;

        private System.Threading.SendOrPostCallback GetVoteListOperationCompleted;

        private System.Threading.SendOrPostCallback VoteOperationCompleted;

        private System.Threading.SendOrPostCallback GiveUpOperationCompleted;

        private System.Threading.SendOrPostCallback GetQuestionTaskListOperationCompleted;

        /// <remarks/>

        public WebserviceForILook() {

            this.Url = "http://st1.services.gmcc.net/qnaire/Services/WebserviceForILook.asmx";

        }

        /// <remarks/>

        public event GetRecordNumCompletedEventHandler GetRecordNumCompleted;

        /// <remarks/>

        public event GetVoteListCompletedEventHandler GetVoteListCompleted;

        /// <remarks/>

        public event VoteCompletedEventHandler VoteCompleted;

        /// <remarks/>

        public event GiveUpCompletedEventHandler GiveUpCompleted;

        /// <remarks/>

        public event GetQuestionTaskListCompletedEventHandler GetQuestionTaskListCompleted;

        /// <remarks/>

        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetRecordNum", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

        public int[] GetRecordNum(string appcode, string userID) {

            object[] results = this.Invoke("GetRecordNum", new object[] {

                        appcode,

                        userID});

            return ((int[])(results[0]));

        }

        /// <remarks/>

        public System.IAsyncResult BeginGetRecordNum(string appcode, string userID, System.AsyncCallback callback, object asyncState) {

            return this.BeginInvoke("GetRecordNum", new object[] {

                        appcode,

                        userID}, callback, asyncState);

        }

        /// <remarks/>

        public int[] EndGetRecordNum(System.IAsyncResult asyncResult) {

            object[] results = this.EndInvoke(asyncResult);

            return ((int[])(results[0]));

        }

        /// <remarks/>

        public void GetRecordNumAsync(string appcode, string userID) {

            this.GetRecordNumAsync(appcode, userID, null);

        }

        /// <remarks/>

        public void GetRecordNumAsync(string appcode, string userID, object userState) {

            if ((this.GetRecordNumOperationCompleted == null)) {

                this.GetRecordNumOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetRecordNumOperationCompleted);

            }

            this.InvokeAsync("GetRecordNum", new object[] {

                        appcode,

                        userID}, this.GetRecordNumOperationCompleted, userState);

        }

        private void OnGetRecordNumOperationCompleted(object arg) {

            if ((this.GetRecordNumCompleted != null)) {

                System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

                this.GetRecordNumCompleted(this, new GetRecordNumCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

            }

        }

        /// <remarks/>

        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetVoteList", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

        public System.Data.DataSet GetVoteList(string appcode, string userID) {

            object[] results = this.Invoke("GetVoteList", new object[] {

                        appcode,

                        userID});

            return ((System.Data.DataSet)(results[0]));

        }

        /// <remarks/>

        public System.IAsyncResult BeginGetVoteList(string appcode, string userID, System.AsyncCallback callback, object asyncState) {

            return this.BeginInvoke("GetVoteList", new object[] {

                        appcode,

                        userID}, callback, asyncState);

        }

        /// <remarks/>

        public System.Data.DataSet EndGetVoteList(System.IAsyncResult asyncResult) {

            object[] results = this.EndInvoke(asyncResult);

            return ((System.Data.DataSet)(results[0]));

        }

        /// <remarks/>

        public void GetVoteListAsync(string appcode, string userID) {

            this.GetVoteListAsync(appcode, userID, null);

        }

        /// <remarks/>

        public void GetVoteListAsync(string appcode, string userID, object userState) {

            if ((this.GetVoteListOperationCompleted == null)) {

                this.GetVoteListOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetVoteListOperationCompleted);

            }

            this.InvokeAsync("GetVoteList", new object[] {

                        appcode,

                        userID}, this.GetVoteListOperationCompleted, userState);

        }

        private void OnGetVoteListOperationCompleted(object arg) {

            if ((this.GetVoteListCompleted != null)) {

                System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

                this.GetVoteListCompleted(this, new GetVoteListCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

            }

        }

        /// <remarks/>

        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/Vote", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

        public bool Vote(string appcode, string userID, string qTaskID, string answer) {

            object[] results = this.Invoke("Vote", new object[] {

                        appcode,

                        userID,

                        qTaskID,

                        answer});

            return ((bool)(results[0]));

        }

        /// <remarks/>

        public System.IAsyncResult BeginVote(string appcode, string userID, string qTaskID, string answer, System.AsyncCallback callback, object asyncState) {

            return this.BeginInvoke("Vote", new object[] {

                        appcode,

                        userID,

                        qTaskID,

                        answer}, callback, asyncState);

        }

        /// <remarks/>

        public bool EndVote(System.IAsyncResult asyncResult) {

            object[] results = this.EndInvoke(asyncResult);

            return ((bool)(results[0]));

        }

        /// <remarks/>

        public void VoteAsync(string appcode, string userID, string qTaskID, string answer) {

            this.VoteAsync(appcode, userID, qTaskID, answer, null);

        }

        /// <remarks/>

        public void VoteAsync(string appcode, string userID, string qTaskID, string answer, object userState) {

            if ((this.VoteOperationCompleted == null)) {

                this.VoteOperationCompleted = new System.Threading.SendOrPostCallback(this.OnVoteOperationCompleted);

            }

            this.InvokeAsync("Vote", new object[] {

                        appcode,

                        userID,

                        qTaskID,

                        answer}, this.VoteOperationCompleted, userState);

        }

        private void OnVoteOperationCompleted(object arg) {

            if ((this.VoteCompleted != null)) {

                System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

                this.VoteCompleted(this, new VoteCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

            }

        }

        /// <remarks/>

        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GiveUp", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

        public bool GiveUp(string appcode, string userID, string qTaskID) {

            object[] results = this.Invoke("GiveUp", new object[] {

                        appcode,

                        userID,

                        qTaskID});

            return ((bool)(results[0]));

        }

        /// <remarks/>

        public System.IAsyncResult BeginGiveUp(string appcode, string userID, string qTaskID, System.AsyncCallback callback, object asyncState) {

            return this.BeginInvoke("GiveUp", new object[] {

                        appcode,

                        userID,

                        qTaskID}, callback, asyncState);

        }

        /// <remarks/>

        public bool EndGiveUp(System.IAsyncResult asyncResult) {

            object[] results = this.EndInvoke(asyncResult);

            return ((bool)(results[0]));

        }

        /// <remarks/>

        public void GiveUpAsync(string appcode, string userID, string qTaskID) {

            this.GiveUpAsync(appcode, userID, qTaskID, null);

        }

        /// <remarks/>

        public void GiveUpAsync(string appcode, string userID, string qTaskID, object userState) {

            if ((this.GiveUpOperationCompleted == null)) {

                this.GiveUpOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGiveUpOperationCompleted);

            }

            this.InvokeAsync("GiveUp", new object[] {

                        appcode,

                        userID,

                        qTaskID}, this.GiveUpOperationCompleted, userState);

        }

        private void OnGiveUpOperationCompleted(object arg) {

            if ((this.GiveUpCompleted != null)) {

                System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

                this.GiveUpCompleted(this, new GiveUpCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

            }

        }

        /// <remarks/>

        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetQuestionTaskList", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

        public System.Data.DataSet GetQuestionTaskList(string appcode, string userID) {

            object[] results = this.Invoke("GetQuestionTaskList", new object[] {

                        appcode,

                        userID});

            return ((System.Data.DataSet)(results[0]));

        }

        /// <remarks/>

        public System.IAsyncResult BeginGetQuestionTaskList(string appcode, string userID, System.AsyncCallback callback, object asyncState) {

            return this.BeginInvoke("GetQuestionTaskList", new object[] {

                        appcode,

                        userID}, callback, asyncState);

        }

        /// <remarks/>

        public System.Data.DataSet EndGetQuestionTaskList(System.IAsyncResult asyncResult) {

            object[] results = this.EndInvoke(asyncResult);

            return ((System.Data.DataSet)(results[0]));

        }

        /// <remarks/>

        public void GetQuestionTaskListAsync(string appcode, string userID) {

            this.GetQuestionTaskListAsync(appcode, userID, null);

        }

        /// <remarks/>

        public void GetQuestionTaskListAsync(string appcode, string userID, object userState) {

            if ((this.GetQuestionTaskListOperationCompleted == null)) {

                this.GetQuestionTaskListOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetQuestionTaskListOperationCompleted);

            }

            this.InvokeAsync("GetQuestionTaskList", new object[] {

                        appcode,

                        userID}, this.GetQuestionTaskListOperationCompleted, userState);

        }

        private void OnGetQuestionTaskListOperationCompleted(object arg) {

            if ((this.GetQuestionTaskListCompleted != null)) {

                System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

                this.GetQuestionTaskListCompleted(this, new GetQuestionTaskListCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

            }

        }

        /// <remarks/>

        public new void CancelAsync(object userState) {

            base.CancelAsync(userState);

        }

    }

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    public delegate void GetRecordNumCompletedEventHandler(object sender, GetRecordNumCompletedEventArgs e);

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.ComponentModel.DesignerCategoryAttribute("code")]

    public partial class GetRecordNumCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

        private object[] results;

        internal GetRecordNumCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

                base(exception, cancelled, userState) {

            this.results = results;

        }

        /// <remarks/>

        public int[] Result {

            get {

                this.RaiseExceptionIfNecessary();

                return ((int[])(this.results[0]));

            }

        }

    }

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    public delegate void GetVoteListCompletedEventHandler(object sender, GetVoteListCompletedEventArgs e);

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.ComponentModel.DesignerCategoryAttribute("code")]

    public partial class GetVoteListCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

        private object[] results;

        internal GetVoteListCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

                base(exception, cancelled, userState) {

            this.results = results;

        }

        /// <remarks/>

        public System.Data.DataSet Result {

            get {

                this.RaiseExceptionIfNecessary();

                return ((System.Data.DataSet)(this.results[0]));

            }

        }

    }

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    public delegate void VoteCompletedEventHandler(object sender, VoteCompletedEventArgs e);

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.ComponentModel.DesignerCategoryAttribute("code")]

    public partial class VoteCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

        private object[] results;

        internal VoteCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

                base(exception, cancelled, userState) {

            this.results = results;

        }

        /// <remarks/>

        public bool Result {

            get {

                this.RaiseExceptionIfNecessary();

                return ((bool)(this.results[0]));

            }

        }

    }

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    public delegate void GiveUpCompletedEventHandler(object sender, GiveUpCompletedEventArgs e);

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.ComponentModel.DesignerCategoryAttribute("code")]

    public partial class GiveUpCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

        private object[] results;

        internal GiveUpCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

                base(exception, cancelled, userState) {

            this.results = results;

        }

        /// <remarks/>

        public bool Result {

            get {

                this.RaiseExceptionIfNecessary();

                return ((bool)(this.results[0]));

            }

        }

    }

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    public delegate void GetQuestionTaskListCompletedEventHandler(object sender, GetQuestionTaskListCompletedEventArgs e);

    /// <remarks/>

    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

    [System.Diagnostics.DebuggerStepThroughAttribute()]

    [System.ComponentModel.DesignerCategoryAttribute("code")]

    public partial class GetQuestionTaskListCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

        private object[] results;

        internal GetQuestionTaskListCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

                base(exception, cancelled, userState) {

            this.results = results;

        }

        /// <remarks/>

        public System.Data.DataSet Result {

            get {

                this.RaiseExceptionIfNecessary();

                return ((System.Data.DataSet)(this.results[0]));

            }

        }

    }

}

更为详细的可以参见：http://blog.csdn.net/slimboy123/article/details/4344914

方法三：利用http 协议的get 和post

这是最为灵活的方法。

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using System;

using System.Collections;

using System.IO;

using System.Net;

using System.Text;

using System.Xml;

using System.Xml.Serialization;

namespace Bingosoft.RIA.Common

{

/// <summary>

/// 利用WebRequest/WebResponse进行WebService调用的类

/// </summary>

public class WebServiceCaller

{

#region Tip:使用说明

//webServices 应该支持Get和Post调用，在web.config应该增加以下代码

//<webServices>

// <protocols>

// <add name="HttpGet"/>

// <add name="HttpPost"/>

// </protocols>

//</webServices>

//调用示例：

//Hashtable ht = new Hashtable(); //Hashtable 为webservice所需要的参数集

//ht.Add("str", "test");

//ht.Add("b", "true");

//XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx", "HelloWorld", ht);

//MessageBox.Show(xx.OuterXml);

#endregion

/// <summary>

/// 需要WebService支持Post调用

/// </summary>

public static XmlDocument QueryPostWebService(String URL, String MethodName, Hashtable Pars)

{

HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);

request.Method = "POST";

request.ContentType = "application/x-www-form-urlencoded";

SetWebRequest(request);

byte[] data = EncodePars(Pars);

WriteRequestData(request, data);

return ReadXmlResponse(request.GetResponse());

}

/// <summary>

/// 需要WebService支持Get调用

/// </summary>

public static XmlDocument QueryGetWebService(String URL, String MethodName, Hashtable Pars)

{

HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName + "?" + ParsToString(Pars));

request.Method = "GET";

request.ContentType = "application/x-www-form-urlencoded";

SetWebRequest(request);

return ReadXmlResponse(request.GetResponse());

}

/// <summary>

/// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值

/// </summary>

public static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars)

{

if (_xmlNamespaces.ContainsKey(URL))

{

return QuerySoapWebService(URL, MethodName, Pars, _xmlNamespaces[URL].ToString());

}

else

{

return QuerySoapWebService(URL, MethodName, Pars, GetNamespace(URL));

}

private static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars, string XmlNs)

{

_xmlNamespaces[URL] = XmlNs;//加入缓存，提高效率

HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL);

request.Method = "POST";

request.ContentType = "text/xml; charset=utf-8";

request.Headers.Add("SOAPAction", "\"" + XmlNs + (XmlNs.EndsWith("/") ? "" : "/") + MethodName + "\"");

SetWebRequest(request);

byte[] data = EncodeParsToSoap(Pars, XmlNs, MethodName);

WriteRequestData(request, data);

XmlDocument doc = new XmlDocument(), doc2 = new XmlDocument();

doc = ReadXmlResponse(request.GetResponse());

XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);

mgr.AddNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");

String RetXml = doc.SelectSingleNode("//soap:Body/*/*", mgr).InnerXml;

doc2.LoadXml("<root>" + RetXml + "</root>");

AddDelaration(doc2);

return doc2;

}

private static string GetNamespace(String URL)

{

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL + "?WSDL");

SetWebRequest(request);

WebResponse response = request.GetResponse();

StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

XmlDocument doc = new XmlDocument();

doc.LoadXml(sr.ReadToEnd());

sr.Close();

return doc.SelectSingleNode("//@targetNamespace").Value;

}

private static byte[] EncodeParsToSoap(Hashtable Pars, String XmlNs, String MethodName)

{

XmlDocument doc = new XmlDocument();

doc.LoadXml(

"<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:Envelope>"

);

AddDelaration(doc);

//XmlElement soapBody = doc.createElement_x_x("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");

XmlElement soapBody = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");

//XmlElement soapMethod = doc.createElement_x_x(MethodName);

XmlElement soapMethod = doc.CreateElement(MethodName);

soapMethod.SetAttribute("xmlns", XmlNs);

foreach (string k in Pars.Keys)

{

//XmlElement soapPar = doc.createElement_x_x(k);

XmlElement soapPar = doc.CreateElement(k);

soapPar.InnerXml = ObjectToSoapXml(Pars[k]);

soapMethod.AppendChild(soapPar);

}

soapBody.AppendChild(soapMethod);

doc.DocumentElement.AppendChild(soapBody);

return Encoding.UTF8.GetBytes(doc.OuterXml);

}

private static string ObjectToSoapXml(object o)

{

XmlSerializer mySerializer = new XmlSerializer(o.GetType());

MemoryStream ms = new MemoryStream();

mySerializer.Serialize(ms, o);

XmlDocument doc = new XmlDocument();

doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));

if (doc.DocumentElement != null)

{

return doc.DocumentElement.InnerXml;

}

else

{

return o.ToString();

}

/// <summary>

/// 设置凭证与超时时间

/// </summary>

/// <param name="request"></param>

private static void SetWebRequest(HttpWebRequest request)

{

request.Credentials = CredentialCache.DefaultCredentials;

request.Timeout = 10000;

}

private static void WriteRequestData(HttpWebRequest request, byte[] data)

{

request.ContentLength = data.Length;

Stream writer = request.GetRequestStream();

writer.Write(data, 0, data.Length);

writer.Close();

}

private static byte[] EncodePars(Hashtable Pars)

{

return Encoding.UTF8.GetBytes(ParsToString(Pars));

}

private static String ParsToString(Hashtable Pars)

{

StringBuilder sb = new StringBuilder();

foreach (string k in Pars.Keys)

{

if (sb.Length > 0)

{

sb.Append("&");

}

//sb.Append(HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(Pars[k].ToString()));

}

return sb.ToString();

}

private static XmlDocument ReadXmlResponse(WebResponse response)

{

StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

String retXml = sr.ReadToEnd();

sr.Close();

XmlDocument doc = new XmlDocument();

doc.LoadXml(retXml);

return doc;

}

private static void AddDelaration(XmlDocument doc)

{

XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null);

doc.InsertBefore(decl, doc.DocumentElement);

}

private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace，避免重复调用GetNamespace

}

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C# 调用webservice 几种办法（转载）

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