最近做一个项目，由于是在别人框架里开发app,导致了很多限制，其中一个就是不能直接引用webservice 。

我们都知道，调用webserivice 最简单的方法就是在 "引用"  那里点击右键，然后选择"引用web服务"，再输入服务地址。

确定后，会生成一个app.config 里面就会自动生成了一些配置信息。

现在正在做的这个项目就不能这么干。后来经过一番搜索，就找出另外几种动态调用webservice 的方法。

废话少说，下面是webservice 代码

  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Web;
  5. using System.Web.Services;
  6.  
  7. namespace TestWebService
  8. {
  9.     /// <summary>
  10.     /// Service1 的摘要说明
  11.     /// </summary>
  12.     [WebService(Namespace = "http://tempuri.org/",Description="我的Web服务")]
  13.     [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
  14.     [System.ComponentModel.ToolboxItem(false)]
  15.     // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
  16.     // [System.Web.Script.Services.ScriptService]
  17.     public class TestWebService : System.Web.Services.WebService
  18.     {
  19.  
  20.         [WebMethod]
  21.         public string HelloWorld()
  22.         {
  23.             return "测试Hello World";
  24.         }
  25.  
  26.         [WebMethod]
  27.         public string Test()
  28.         {
  29.             return "测试Test";
  30.         }
  31.  
  32.         [WebMethod(CacheDuration = ,Description = "测试")]
  33.         public List<String> GetPersons()
  34.         {
  35.             List<String> list = new List<string>();
  36.             list.Add("测试一");
  37.             list.Add("测试二");
  38.             list.Add("测试三");
  39.             return list;
  40.         }  
  41.  
  42.     }
  43.  
  44. }

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

  1. using System;
  2. using System.IO;
  3. using System.Collections.Generic;
  4. using System.Linq;
  5. using System.Collections;
  6. using System.Web;
  7. using System.Net;
  8. using System.Reflection;
  9. using System.CodeDom;
  10. using System.CodeDom.Compiler;
  11. using System.Web.Services;
  12. using System.Text;
  13. using System.Web.Services.Description;
  14. using System.Web.Services.Protocols;
  15. using System.Xml.Serialization;
  16. using System.Windows.Forms;
  17.  
  18. namespace ConsoleApplication1
  19. {
  20.     class Program
  21.     {
  22.         static void Main(string[] args)
  23.         {
  24.             WebClient client = new WebClient();
  25.             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
  26.             Stream stream = client.OpenRead(url);
  27.             ServiceDescription description = ServiceDescription.Read(stream);
  28.  
  29.             ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//创建客户端代理代理类。
  30.  
  31.             importer.ProtocolName = "Soap"; //指定访问协议。
  32.             importer.Style = ServiceDescriptionImportStyle.Client; //生成客户端代理。
  33.             importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties | CodeGenerationOptions.GenerateNewAsync;
  34.  
  35.             importer.AddServiceDescription(description, null, null); //添加WSDL文档。
  36.  
  37.             CodeNamespace nmspace = new CodeNamespace(); //命名空间
  38.             nmspace.Name = "TestWebService";
  39.             CodeCompileUnit unit = new CodeCompileUnit();
  40.             unit.Namespaces.Add(nmspace);
  41.  
  42.             ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit);
  43.             CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
  44.  
  45.             CompilerParameters parameter = new CompilerParameters();
  46.             parameter.GenerateExecutable = false;
  47.             parameter.OutputAssembly = "MyTest.dll";//输出程序集的名称
  48.             parameter.ReferencedAssemblies.Add("System.dll");
  49.             parameter.ReferencedAssemblies.Add("System.XML.dll");
  50.             parameter.ReferencedAssemblies.Add("System.Web.Services.dll");
  51.             parameter.ReferencedAssemblies.Add("System.Data.dll");
  52.  
  53.             CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit);
  54.             if (result.Errors.HasErrors)
  55.             {
  56.                 // 显示编译错误信息
  57.             }
  58.  
  59.             Assembly asm = Assembly.LoadFrom("MyTest.dll");//加载前面生成的程序集
  60.             Type t = asm.GetType("TestWebService.TestWebService");
  61.  
  62.             object o = Activator.CreateInstance(t);
  63.             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
  64.  
  65.             String[] item = (String[])method.Invoke(o, null);
  66.             //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
  67.             foreach (string str in item)
  68.                 Console.WriteLine(str);
  69.  
  70.             //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
  71.             TextWriter writer = File.CreateText("MyTest.cs");
  72.             provider.GenerateCodeFromCompileUnit(unit, writer, null);
  73.             writer.Flush();
  74.             writer.Close();
  75.         }
  76.     }
  77. }

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：

  1. //------------------------------------------------------------------------------
  2. // <auto-generated>
  3. //     此代码由工具生成。
  4. //     运行时版本:4.0.30319.225
  5. //
  6. //     对此文件的更改可能会导致不正确的行为，并且如果
  7. //     重新生成代码，这些更改将会丢失。
  8. // </auto-generated>
  9. //------------------------------------------------------------------------------
  10.  
  11. //
  12. // 此源代码由 wsdl 自动生成, Version=4.0.30319.1。
  13. //
  14. namespace Bingosoft.Module.SurveyQuestionnaire.DAL {
  15.     using System;
  16.     using System.Diagnostics;
  17.     using System.Xml.Serialization;
  18.     using System.ComponentModel;
  19.     using System.Web.Services.Protocols;
  20.     using System.Web.Services;
  21.     using System.Data;
  22.  
  23.     /// <remarks/>
  24.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  25.     [System.Diagnostics.DebuggerStepThroughAttribute()]
  26.     [System.ComponentModel.DesignerCategoryAttribute("code")]
  27.     [System.Web.Services.WebServiceBindingAttribute(Name="WebserviceForILookSoap", Namespace="http://tempuri.org/")]
  28.     public partial class WebserviceForILook : System.Web.Services.Protocols.SoapHttpClientProtocol {
  29.  
  30.         private System.Threading.SendOrPostCallback GetRecordNumOperationCompleted;
  31.  
  32.         private System.Threading.SendOrPostCallback GetVoteListOperationCompleted;
  33.  
  34.         private System.Threading.SendOrPostCallback VoteOperationCompleted;
  35.  
  36.         private System.Threading.SendOrPostCallback GiveUpOperationCompleted;
  37.  
  38.         private System.Threading.SendOrPostCallback GetQuestionTaskListOperationCompleted;
  39.  
  40.         /// <remarks/>
  41.         public WebserviceForILook() {
  42.             this.Url = "http://st1.services.gmcc.net/qnaire/Services/WebserviceForILook.asmx";
  43.         }
  44.  
  45.         /// <remarks/>
  46.         public event GetRecordNumCompletedEventHandler GetRecordNumCompleted;
  47.  
  48.         /// <remarks/>
  49.         public event GetVoteListCompletedEventHandler GetVoteListCompleted;
  50.  
  51.         /// <remarks/>
  52.         public event VoteCompletedEventHandler VoteCompleted;
  53.  
  54.         /// <remarks/>
  55.         public event GiveUpCompletedEventHandler GiveUpCompleted;
  56.  
  57.         /// <remarks/>
  58.         public event GetQuestionTaskListCompletedEventHandler GetQuestionTaskListCompleted;
  59.  
  60.         /// <remarks/>
  61.         [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)]
  62.         public int[] GetRecordNum(string appcode, string userID) {
  63.             object[] results = this.Invoke("GetRecordNum", new object[] {
  64.                         appcode,
  65.                         userID});
  66.             return ((int[])(results[]));
  67.         }
  68.  
  69.         /// <remarks/>
  70.         public System.IAsyncResult BeginGetRecordNum(string appcode, string userID, System.AsyncCallback callback, object asyncState) {
  71.             return this.BeginInvoke("GetRecordNum", new object[] {
  72.                         appcode,
  73.                         userID}, callback, asyncState);
  74.         }
  75.  
  76.         /// <remarks/>
  77.         public int[] EndGetRecordNum(System.IAsyncResult asyncResult) {
  78.             object[] results = this.EndInvoke(asyncResult);
  79.             return ((int[])(results[]));
  80.         }
  81.  
  82.         /// <remarks/>
  83.         public void GetRecordNumAsync(string appcode, string userID) {
  84.             this.GetRecordNumAsync(appcode, userID, null);
  85.         }
  86.  
  87.         /// <remarks/>
  88.         public void GetRecordNumAsync(string appcode, string userID, object userState) {
  89.             if ((this.GetRecordNumOperationCompleted == null)) {
  90.                 this.GetRecordNumOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetRecordNumOperationCompleted);
  91.             }
  92.             this.InvokeAsync("GetRecordNum", new object[] {
  93.                         appcode,
  94.                         userID}, this.GetRecordNumOperationCompleted, userState);
  95.         }
  96.  
  97.         private void OnGetRecordNumOperationCompleted(object arg) {
  98.             if ((this.GetRecordNumCompleted != null)) {
  99.                 System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
  100.                 this.GetRecordNumCompleted(this, new GetRecordNumCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
  101.             }
  102.         }
  103.  
  104.         /// <remarks/>
  105.         [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)]
  106.         public System.Data.DataSet GetVoteList(string appcode, string userID) {
  107.             object[] results = this.Invoke("GetVoteList", new object[] {
  108.                         appcode,
  109.                         userID});
  110.             return ((System.Data.DataSet)(results[]));
  111.         }
  112.  
  113.         /// <remarks/>
  114.         public System.IAsyncResult BeginGetVoteList(string appcode, string userID, System.AsyncCallback callback, object asyncState) {
  115.             return this.BeginInvoke("GetVoteList", new object[] {
  116.                         appcode,
  117.                         userID}, callback, asyncState);
  118.         }
  119.  
  120.         /// <remarks/>
  121.         public System.Data.DataSet EndGetVoteList(System.IAsyncResult asyncResult) {
  122.             object[] results = this.EndInvoke(asyncResult);
  123.             return ((System.Data.DataSet)(results[]));
  124.         }
  125.  
  126.         /// <remarks/>
  127.         public void GetVoteListAsync(string appcode, string userID) {
  128.             this.GetVoteListAsync(appcode, userID, null);
  129.         }
  130.  
  131.         /// <remarks/>
  132.         public void GetVoteListAsync(string appcode, string userID, object userState) {
  133.             if ((this.GetVoteListOperationCompleted == null)) {
  134.                 this.GetVoteListOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetVoteListOperationCompleted);
  135.             }
  136.             this.InvokeAsync("GetVoteList", new object[] {
  137.                         appcode,
  138.                         userID}, this.GetVoteListOperationCompleted, userState);
  139.         }
  140.  
  141.         private void OnGetVoteListOperationCompleted(object arg) {
  142.             if ((this.GetVoteListCompleted != null)) {
  143.                 System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
  144.                 this.GetVoteListCompleted(this, new GetVoteListCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
  145.             }
  146.         }
  147.  
  148.         /// <remarks/>
  149.         [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)]
  150.         public bool Vote(string appcode, string userID, string qTaskID, string answer) {
  151.             object[] results = this.Invoke("Vote", new object[] {
  152.                         appcode,
  153.                         userID,
  154.                         qTaskID,
  155.                         answer});
  156.             return ((bool)(results[]));
  157.         }
  158.  
  159.         /// <remarks/>
  160.         public System.IAsyncResult BeginVote(string appcode, string userID, string qTaskID, string answer, System.AsyncCallback callback, object asyncState) {
  161.             return this.BeginInvoke("Vote", new object[] {
  162.                         appcode,
  163.                         userID,
  164.                         qTaskID,
  165.                         answer}, callback, asyncState);
  166.         }
  167.  
  168.         /// <remarks/>
  169.         public bool EndVote(System.IAsyncResult asyncResult) {
  170.             object[] results = this.EndInvoke(asyncResult);
  171.             return ((bool)(results[]));
  172.         }
  173.  
  174.         /// <remarks/>
  175.         public void VoteAsync(string appcode, string userID, string qTaskID, string answer) {
  176.             this.VoteAsync(appcode, userID, qTaskID, answer, null);
  177.         }
  178.  
  179.         /// <remarks/>
  180.         public void VoteAsync(string appcode, string userID, string qTaskID, string answer, object userState) {
  181.             if ((this.VoteOperationCompleted == null)) {
  182.                 this.VoteOperationCompleted = new System.Threading.SendOrPostCallback(this.OnVoteOperationCompleted);
  183.             }
  184.             this.InvokeAsync("Vote", new object[] {
  185.                         appcode,
  186.                         userID,
  187.                         qTaskID,
  188.                         answer}, this.VoteOperationCompleted, userState);
  189.         }
  190.  
  191.         private void OnVoteOperationCompleted(object arg) {
  192.             if ((this.VoteCompleted != null)) {
  193.                 System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
  194.                 this.VoteCompleted(this, new VoteCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
  195.             }
  196.         }
  197.  
  198.         /// <remarks/>
  199.         [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)]
  200.         public bool GiveUp(string appcode, string userID, string qTaskID) {
  201.             object[] results = this.Invoke("GiveUp", new object[] {
  202.                         appcode,
  203.                         userID,
  204.                         qTaskID});
  205.             return ((bool)(results[]));
  206.         }
  207.  
  208.         /// <remarks/>
  209.         public System.IAsyncResult BeginGiveUp(string appcode, string userID, string qTaskID, System.AsyncCallback callback, object asyncState) {
  210.             return this.BeginInvoke("GiveUp", new object[] {
  211.                         appcode,
  212.                         userID,
  213.                         qTaskID}, callback, asyncState);
  214.         }
  215.  
  216.         /// <remarks/>
  217.         public bool EndGiveUp(System.IAsyncResult asyncResult) {
  218.             object[] results = this.EndInvoke(asyncResult);
  219.             return ((bool)(results[]));
  220.         }
  221.  
  222.         /// <remarks/>
  223.         public void GiveUpAsync(string appcode, string userID, string qTaskID) {
  224.             this.GiveUpAsync(appcode, userID, qTaskID, null);
  225.         }
  226.  
  227.         /// <remarks/>
  228.         public void GiveUpAsync(string appcode, string userID, string qTaskID, object userState) {
  229.             if ((this.GiveUpOperationCompleted == null)) {
  230.                 this.GiveUpOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGiveUpOperationCompleted);
  231.             }
  232.             this.InvokeAsync("GiveUp", new object[] {
  233.                         appcode,
  234.                         userID,
  235.                         qTaskID}, this.GiveUpOperationCompleted, userState);
  236.         }
  237.  
  238.         private void OnGiveUpOperationCompleted(object arg) {
  239.             if ((this.GiveUpCompleted != null)) {
  240.                 System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
  241.                 this.GiveUpCompleted(this, new GiveUpCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
  242.             }
  243.         }
  244.  
  245.         /// <remarks/>
  246.         [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)]
  247.         public System.Data.DataSet GetQuestionTaskList(string appcode, string userID) {
  248.             object[] results = this.Invoke("GetQuestionTaskList", new object[] {
  249.                         appcode,
  250.                         userID});
  251.             return ((System.Data.DataSet)(results[]));
  252.         }
  253.  
  254.         /// <remarks/>
  255.         public System.IAsyncResult BeginGetQuestionTaskList(string appcode, string userID, System.AsyncCallback callback, object asyncState) {
  256.             return this.BeginInvoke("GetQuestionTaskList", new object[] {
  257.                         appcode,
  258.                         userID}, callback, asyncState);
  259.         }
  260.  
  261.         /// <remarks/>
  262.         public System.Data.DataSet EndGetQuestionTaskList(System.IAsyncResult asyncResult) {
  263.             object[] results = this.EndInvoke(asyncResult);
  264.             return ((System.Data.DataSet)(results[]));
  265.         }
  266.  
  267.         /// <remarks/>
  268.         public void GetQuestionTaskListAsync(string appcode, string userID) {
  269.             this.GetQuestionTaskListAsync(appcode, userID, null);
  270.         }
  271.  
  272.         /// <remarks/>
  273.         public void GetQuestionTaskListAsync(string appcode, string userID, object userState) {
  274.             if ((this.GetQuestionTaskListOperationCompleted == null)) {
  275.                 this.GetQuestionTaskListOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetQuestionTaskListOperationCompleted);
  276.             }
  277.             this.InvokeAsync("GetQuestionTaskList", new object[] {
  278.                         appcode,
  279.                         userID}, this.GetQuestionTaskListOperationCompleted, userState);
  280.         }
  281.  
  282.         private void OnGetQuestionTaskListOperationCompleted(object arg) {
  283.             if ((this.GetQuestionTaskListCompleted != null)) {
  284.                 System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
  285.                 this.GetQuestionTaskListCompleted(this, new GetQuestionTaskListCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
  286.             }
  287.         }
  288.  
  289.         /// <remarks/>
  290.         public new void CancelAsync(object userState) {
  291.             base.CancelAsync(userState);
  292.         }
  293.     }
  294.  
  295.     /// <remarks/>
  296.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  297.     public delegate void GetRecordNumCompletedEventHandler(object sender, GetRecordNumCompletedEventArgs e);
  298.  
  299.     /// <remarks/>
  300.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  301.     [System.Diagnostics.DebuggerStepThroughAttribute()]
  302.     [System.ComponentModel.DesignerCategoryAttribute("code")]
  303.     public partial class GetRecordNumCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {
  304.  
  305.         private object[] results;
  306.  
  307.         internal GetRecordNumCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :
  308.                 base(exception, cancelled, userState) {
  309.             this.results = results;
  310.         }
  311.  
  312.         /// <remarks/>
  313.         public int[] Result {
  314.             get {
  315.                 this.RaiseExceptionIfNecessary();
  316.                 return ((int[])(this.results[]));
  317.             }
  318.         }
  319.     }
  320.  
  321.     /// <remarks/>
  322.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  323.     public delegate void GetVoteListCompletedEventHandler(object sender, GetVoteListCompletedEventArgs e);
  324.  
  325.     /// <remarks/>
  326.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  327.     [System.Diagnostics.DebuggerStepThroughAttribute()]
  328.     [System.ComponentModel.DesignerCategoryAttribute("code")]
  329.     public partial class GetVoteListCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {
  330.  
  331.         private object[] results;
  332.  
  333.         internal GetVoteListCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :
  334.                 base(exception, cancelled, userState) {
  335.             this.results = results;
  336.         }
  337.  
  338.         /// <remarks/>
  339.         public System.Data.DataSet Result {
  340.             get {
  341.                 this.RaiseExceptionIfNecessary();
  342.                 return ((System.Data.DataSet)(this.results[]));
  343.             }
  344.         }
  345.     }
  346.  
  347.     /// <remarks/>
  348.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  349.     public delegate void VoteCompletedEventHandler(object sender, VoteCompletedEventArgs e);
  350.  
  351.     /// <remarks/>
  352.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  353.     [System.Diagnostics.DebuggerStepThroughAttribute()]
  354.     [System.ComponentModel.DesignerCategoryAttribute("code")]
  355.     public partial class VoteCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {
  356.  
  357.         private object[] results;
  358.  
  359.         internal VoteCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :
  360.                 base(exception, cancelled, userState) {
  361.             this.results = results;
  362.         }
  363.  
  364.         /// <remarks/>
  365.         public bool Result {
  366.             get {
  367.                 this.RaiseExceptionIfNecessary();
  368.                 return ((bool)(this.results[]));
  369.             }
  370.         }
  371.     }
  372.  
  373.     /// <remarks/>
  374.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  375.     public delegate void GiveUpCompletedEventHandler(object sender, GiveUpCompletedEventArgs e);
  376.  
  377.     /// <remarks/>
  378.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  379.     [System.Diagnostics.DebuggerStepThroughAttribute()]
  380.     [System.ComponentModel.DesignerCategoryAttribute("code")]
  381.     public partial class GiveUpCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {
  382.  
  383.         private object[] results;
  384.  
  385.         internal GiveUpCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :
  386.                 base(exception, cancelled, userState) {
  387.             this.results = results;
  388.         }
  389.  
  390.         /// <remarks/>
  391.         public bool Result {
  392.             get {
  393.                 this.RaiseExceptionIfNecessary();
  394.                 return ((bool)(this.results[]));
  395.             }
  396.         }
  397.     }
  398.  
  399.     /// <remarks/>
  400.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  401.     public delegate void GetQuestionTaskListCompletedEventHandler(object sender, GetQuestionTaskListCompletedEventArgs e);
  402.  
  403.     /// <remarks/>
  404.     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]
  405.     [System.Diagnostics.DebuggerStepThroughAttribute()]
  406.     [System.ComponentModel.DesignerCategoryAttribute("code")]
  407.     public partial class GetQuestionTaskListCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {
  408.  
  409.         private object[] results;
  410.  
  411.         internal GetQuestionTaskListCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :
  412.                 base(exception, cancelled, userState) {
  413.             this.results = results;
  414.         }
  415.  
  416.         /// <remarks/>
  417.         public System.Data.DataSet Result {
  418.             get {
  419.                 this.RaiseExceptionIfNecessary();
  420.                 return ((System.Data.DataSet)(this.results[]));
  421.             }
  422.         }
  423.     }
  424. }

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。

  1. using System;
  2. using System.Collections;
  3. using System.IO;
  4. using System.Net;
  5. using System.Text;
  6. using System.Xml;
  7. using System.Xml.Serialization;
  8. namespace Bingosoft.RIA.Common
  9. {
  10.     /// <summary>
  11.     ///  利用WebRequest/WebResponse进行WebService调用的类
  12.     /// </summary>
  13.     public class WebServiceCaller
  14.     {
  15.         #region Tip:使用说明
  16.         //webServices 应该支持Get和Post调用，在web.config应该增加以下代码
  17.         //<webServices>
  18.         //  <protocols>
  19.         //    <add name="HttpGet"/>
  20.         //    <add name="HttpPost"/>
  21.         //  </protocols>
  22.         //</webServices>
  23.  
  24.         //调用示例：
  25.         //Hashtable ht = new Hashtable();  //Hashtable 为webservice所需要的参数集
  26.         //ht.Add("str", "test");
  27.         //ht.Add("b", "true");
  28.         //XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx", "HelloWorld", ht);
  29.         //MessageBox.Show(xx.OuterXml);
  30.         #endregion
  31.  
  32.         /// <summary>
  33.         /// 需要WebService支持Post调用
  34.         /// </summary>
  35.         public static XmlDocument QueryPostWebService(String URL, String MethodName, Hashtable Pars)
  36.         {
  37.             HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);
  38.             request.Method = "POST";
  39.             request.ContentType = "application/x-www-form-urlencoded";
  40.             SetWebRequest(request);
  41.             byte[] data = EncodePars(Pars);
  42.             WriteRequestData(request, data);
  43.             return ReadXmlResponse(request.GetResponse());
  44.         }
  45.  
  46.         /// <summary>
  47.         /// 需要WebService支持Get调用
  48.         /// </summary>
  49.         public static XmlDocument QueryGetWebService(String URL, String MethodName, Hashtable Pars)
  50.         {
  51.             HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName + "?" + ParsToString(Pars));
  52.             request.Method = "GET";
  53.             request.ContentType = "application/x-www-form-urlencoded";
  54.             SetWebRequest(request);
  55.             return ReadXmlResponse(request.GetResponse());
  56.         }
  57.  
  58.         /// <summary>
  59.         /// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值
  60.         /// </summary>
  61.         public static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars)
  62.         {
  63.             if (_xmlNamespaces.ContainsKey(URL))
  64.             {
  65.                 return QuerySoapWebService(URL, MethodName, Pars, _xmlNamespaces[URL].ToString());
  66.             }
  67.             else
  68.             {
  69.                 return QuerySoapWebService(URL, MethodName, Pars, GetNamespace(URL));
  70.             }
  71.         }
  72.  
  73.         private static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars, string XmlNs)
  74.         {
  75.             _xmlNamespaces[URL] = XmlNs;//加入缓存，提高效率
  76.             HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL);
  77.             request.Method = "POST";
  78.             request.ContentType = "text/xml; charset=utf-8";
  79.             request.Headers.Add("SOAPAction", "\"" + XmlNs + (XmlNs.EndsWith("/") ? "" : "/") + MethodName + "\"");
  80.             SetWebRequest(request);
  81.             byte[] data = EncodeParsToSoap(Pars, XmlNs, MethodName);
  82.             WriteRequestData(request, data);
  83.             XmlDocument doc = new XmlDocument(), doc2 = new XmlDocument();
  84.             doc = ReadXmlResponse(request.GetResponse());
  85.  
  86.             XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);
  87.             mgr.AddNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");
  88.             String RetXml = doc.SelectSingleNode("//soap:Body/*/*", mgr).InnerXml;
  89.             doc2.LoadXml("<root>" + RetXml + "</root>");
  90.             AddDelaration(doc2);
  91.             return doc2;
  92.         }
  93.         private static string GetNamespace(String URL)
  94.         {
  95.             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL + "?WSDL");
  96.             SetWebRequest(request);
  97.             WebResponse response = request.GetResponse();
  98.             StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
  99.             XmlDocument doc = new XmlDocument();
  100.             doc.LoadXml(sr.ReadToEnd());
  101.             sr.Close();
  102.             return doc.SelectSingleNode("//@targetNamespace").Value;
  103.         }
  104.  
  105.         private static byte[] EncodeParsToSoap(Hashtable Pars, String XmlNs, String MethodName)
  106.         {
  107.             XmlDocument doc = new XmlDocument();
  108.             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>");
  109.             AddDelaration(doc);
  110.             //XmlElement soapBody = doc.createElement_x_x("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");
  111.             XmlElement soapBody = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");
  112.             //XmlElement soapMethod = doc.createElement_x_x(MethodName);
  113.             XmlElement soapMethod = doc.CreateElement(MethodName);
  114.             soapMethod.SetAttribute("xmlns", XmlNs);
  115.             foreach (string k in Pars.Keys)
  116.             {
  117.                 //XmlElement soapPar = doc.createElement_x_x(k);
  118.                 XmlElement soapPar = doc.CreateElement(k);
  119.                 soapPar.InnerXml = ObjectToSoapXml(Pars[k]);
  120.                 soapMethod.AppendChild(soapPar);
  121.             }
  122.             soapBody.AppendChild(soapMethod);
  123.             doc.DocumentElement.AppendChild(soapBody);
  124.             return Encoding.UTF8.GetBytes(doc.OuterXml);
  125.         }
  126.         private static string ObjectToSoapXml(object o)
  127.         {
  128.             XmlSerializer mySerializer = new XmlSerializer(o.GetType());
  129.             MemoryStream ms = new MemoryStream();
  130.             mySerializer.Serialize(ms, o);
  131.             XmlDocument doc = new XmlDocument();
  132.             doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));
  133.             if (doc.DocumentElement != null)
  134.             {
  135.                 return doc.DocumentElement.InnerXml;
  136.             }
  137.             else
  138.             {
  139.                 return o.ToString();
  140.             }
  141.         }
  142.  
  143.         /// <summary>
  144.         /// 设置凭证与超时时间
  145.         /// </summary>
  146.         /// <param name="request"></param>
  147.         private static void SetWebRequest(HttpWebRequest request)
  148.         {
  149.             request.Credentials = CredentialCache.DefaultCredentials;
  150.             request.Timeout = ;
  151.         }
  152.  
  153.         private static void WriteRequestData(HttpWebRequest request, byte[] data)
  154.         {
  155.             request.ContentLength = data.Length;
  156.             Stream writer = request.GetRequestStream();
  157.             writer.Write(data, , data.Length);
  158.             writer.Close();
  159.         }
  160.  
  161.         private static byte[] EncodePars(Hashtable Pars)
  162.         {
  163.             return Encoding.UTF8.GetBytes(ParsToString(Pars));
  164.         }
  165.  
  166.         private static String ParsToString(Hashtable Pars)
  167.         {
  168.             StringBuilder sb = new StringBuilder();
  169.             foreach (string k in Pars.Keys)
  170.             {
  171.                 if (sb.Length > )
  172.                 {
  173.                     sb.Append("&");
  174.                 }
  175.                 //sb.Append(HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(Pars[k].ToString()));
  176.             }
  177.             return sb.ToString();
  178.         }
  179.  
  180.         private static XmlDocument ReadXmlResponse(WebResponse response)
  181.         {
  182.             StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
  183.             String retXml = sr.ReadToEnd();
  184.             sr.Close();
  185.             XmlDocument doc = new XmlDocument();
  186.             doc.LoadXml(retXml);
  187.             return doc;
  188.         }
  189.  
  190.         private static void AddDelaration(XmlDocument doc)
  191.         {
  192.             XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null);
  193.             doc.InsertBefore(decl, doc.DocumentElement);
  194.         }
  195.  
  196.         private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace，避免重复调用GetNamespace
  197.     }
  198. }

转载：

吴佳鑫的个人专栏

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