动态调用WebService服务的方法

public static object InvokeWebService(string url, string methodname, object[] args)

{

return WebServiceHelper.InvokeWebService(url, null, methodname, args);

}

public static object InvokeWebService(string url, string classname, string methodname, object[] args)

{

string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";

if ((classname == null) || (classname == ""))

{

classname = WebServiceHelper.GetWsClassName(url);

}

try

{

//获取WSDL

WebClient wc = new WebClient();

Stream stream = wc.OpenRead(url + "?WSDL");

ServiceDescription sd = ServiceDescription.Read(stream);

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);

CSharpCodeProvider csc = new CSharpCodeProvider();

ICodeCompiler icc = csc.CreateCompiler();

//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 = icc.CompileAssemblyFromDom(cplist, ccu);

if (true == cr.Errors.HasErrors)

{

System.Text.StringBuilder sb = new System.Text.StringBuilder();

foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)

{

sb.Append(ce.ToString());

sb.Append(System.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);

}

catch (Exception ex)

{

throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));

}

}

private static string GetWsClassName(string wsUrl)

{

string[] parts = wsUrl.Split('/');

string[] pps = parts[parts.Length - 1].Split('.');

return pps[0];

}

}