using Microsoft.CSharp;
using System;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Text;
using System.Web.Services.Description;
using System.Xml.Serialization;

namespace SunCreate.HaiKang8600WebService.Utils
{
  /// <summary>
  /// 動態調用WebService
  /// </summary>
  public static class WebServiceHelper
  {
    /// <summary>
    /// 動態調用WebService
    /// </summary>
    /// <param name="url">WebService地址</param>
    /// <param name="strNamespace">命名空間</param>
    /// <param name="className">類名</param>
    /// <param name="methodName">方法名(模塊名)</param>
    /// <param name="args">參數列表</param>
    public static object InvokeWebService(string url, string strNamespace, string className, string methodName, object[] args)
    {
      try
      {
        WebClient webClient = new WebClient();
        Stream stream = webClient.OpenRead(url); //獲取服務描述語言(WSDL)

        ServiceDescription serviceDescription = ServiceDescription.Read(stream); //通過直接從 Stream實例加載 XML 來初始化ServiceDescription類的實例。
        ServiceDescriptionImporter serviceDescriptionImporter = new ServiceDescriptionImporter();
        serviceDescriptionImporter.AddServiceDescription(serviceDescription, null, null);

        //生成客戶端代理類代碼
        CodeNamespace codeNamespace = new CodeNamespace(strNamespace); //CodeNamespace表示命名空間聲明。
        CodeCompileUnit codeCompileUnit = new CodeCompileUnit();
        codeCompileUnit.Namespaces.Add(codeNamespace);
        serviceDescriptionImporter.Import(codeNamespace, codeCompileUnit);

        CSharpCodeProvider csharpCodeProvider = new CSharpCodeProvider();
        ICodeCompiler iCodeCompiler = csharpCodeProvider.CreateCompiler();//取得C#程式碼編譯器的執行個體

        //設定編譯器的參數
        CompilerParameters compilerParameters = new CompilerParameters();//創建編譯器的參數實例
        compilerParameters.GenerateExecutable = false;
        compilerParameters.GenerateInMemory = true;
        compilerParameters.ReferencedAssemblies.Add("System.dll");
        compilerParameters.ReferencedAssemblies.Add("System.XML.dll");
        compilerParameters.ReferencedAssemblies.Add("System.Web.Services.dll");
        compilerParameters.ReferencedAssemblies.Add("System.Data.dll");

        //編譯代理類
        CompilerResults compilerResults = iCodeCompiler.CompileAssemblyFromDom(compilerParameters, codeCompileUnit);
        if (true == compilerResults.Errors.HasErrors)
        {
          StringBuilder sb = new StringBuilder();
          foreach (CompilerError ce in compilerResults.Errors)
          {
            sb.Append(ce.ToString());
            sb.Append(System.Environment.NewLine);
          }
          throw new Exception(sb.ToString());
        }

        //生成代理實例,并調用方法
        System.Reflection.Assembly assembly = compilerResults.CompiledAssembly;
        Type type = assembly.GetType(strNamespace + "." + className, true, true);
        object obj = Activator.CreateInstance(type);
        System.Reflection.MethodInfo methodInfo = type.GetMethod(methodName); //MethodInfo 的實例可以通過調用GetMethods或者Type對象或派生自Type的對象的GetMethod方法來獲取，還可以通過調用表示泛型方法定義的 MethodInfo 的MakeGenericMethod方法來獲取。
        return methodInfo.Invoke(obj, args);
      }
      catch (Exception ex)
      {
        LogUtil.LogError(ex, "動態調用WebService 錯誤");
        return null;
      }
    }

  }
}

string url = "http://172.16.36.26:8080/attachment/services/AttachmentService?wsdl";
object[] args = new object[2];
args[0] = "1";
args[1] = "1";
object str = WebServiceHelper.InvokeWebService(url, "service.webservice", "AttachmentService", "checkGrade", args);
string sstr = str.ToString();