C# 动态调用WebService 2

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.ServiceModel;
using System.ServiceModel.Security;
using System.Text;
using System.Threading.Tasks;
using System.Web.Services.Description;

public class WebServiceHelper
{
#region InvokeWebService
//动态调用web服务
public object InvokeWebService(string url, string methodname, object[] args)
{
return InvokeWebService(url, null, methodname, args);
}

public object InvokeWebService(string url, string classname,
string methodname, object[] args)
{
//string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
string @namespace = "FrameWork.WebService.DynamicWebServiceCalling";
//FrameWork.WebService.DynamicWebServiceCalling

if (string.IsNullOrEmpty(classname))
{
classname = GetWsClassName(url);
}

//获取WSDL
WebClient wc = new WebClient();

url = url.Trim().ToLower().Trim("?wsdl".ToCharArray()) + "?WSDL";
Stream stream = wc.OpenRead(url);
ServiceDescription sd = ServiceDescription.Read(stream);

sd.Bindings.Add(CreateBinding("MaxBufferSize", "2147483647"));
sd.Bindings.Add(CreateBinding("maxReceivedMessageSize", "2147483647"));

ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
CodeNamespace cn = new CodeNamespace(@namespace);

//生成客户端代理类代码
CodeCompileUnit ccu = new CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);

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

//设定编译参数
CompilerParameters cplist = new CompilerParameters();
cplist.GenerateExecutable = false;
cplist.GenerateInMemory = true;
cplist.ReferencedAssemblies.Add("System.dll");
cplist.ReferencedAssemblies.Add("System.XML.dll");
cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
cplist.ReferencedAssemblies.Add("System.Data.dll");

//编译代理类
CompilerResults cr = csc.CompileAssemblyFromDom(cplist, ccu);
if (true == cr.Errors.HasErrors)
{
StringBuilder sb = new StringBuilder();
foreach (CompilerError ce in cr.Errors)
{
sb.Append(ce.ToString());
sb.Append(Environment.NewLine);
}
throw new Exception(sb.ToString());
}

//生成代理实例，并调用方法
System.Reflection.Assembly assembly = cr.CompiledAssembly;
Type t = assembly.GetType(@namespace + "." + classname, true, true);
object obj = Activator.CreateInstance(t);
System.Reflection.MethodInfo mi = t.GetMethod(methodname);
return mi.Invoke(obj, args);
}

private Binding CreateBinding(string name, string doc)
{
Binding bd = new Binding();
bd.Name = name;
bd.Documentation = doc;
return bd;
}

private string GetWsClassName(string wsUrl)
{
string[] parts = wsUrl.Split('/');
string[] pps = parts[parts.Length - 1].Split('.');

return pps[0];
}
#endregion
}