动态调用WebService

//调用
private void btnSubmit_Click(object sender, EventArgs e)
{
    if(string.IsNullOrEmpty(txtUrl.Text.Trim()))
    {
        MessageBox.Show("接口地址不能为空！");
        return;
    }
    if (cbInterFace.EditValue==null)
    {
        MessageBox.Show("接口名称不能为空！");
        return;
    }
    if (string.IsNullOrEmpty(txtParameter.Text.Trim()))
    {
        MessageBox.Show("接口参数不能为空！");
        return;
    }
    try
    {
        #region 动态调用 webservices地址
        object[] args = new object[1];
        args[0] = (txtParameter.Text.Trim());
        object result = WebServiceHelper.InvokeWebService(txtUrl.Text, cbInterFace.Text.Trim(), args);
        string message = result.ToString();
        #endregion
            //格式化XMl
            txtXml.Text = formatXml(message);
    }
    catch (Exception ex)
    {
        MessageBox.Show("接口调取出错：" + ex.ToString());
    }

}

库

public class WebServiceHelper
{
    #region 动态调用WebService动态调用地址
        /// < summary>           
        /// 动态调用web服务         
        /// < /summary>          
        /// < param name="url">WSDL服务地址< /param> 
        /// < param name="methodname">方法名< /param>           
        /// < param name="args">参数< /param>           
        /// < returns>< /returns>          
        public static object InvokeWebService(string url, string methodname, object[] args)
    {
        return WebServiceHelper.InvokeWebService(url, null, methodname, args);
    }
    /// <summary>
    /// 动态调用web服务
    /// </summary>
    /// <param name="url">WSDL服务地址</param>
    /// <param name="classname">服务接口类名</param>
    /// <param name="methodname">方法名</param>
    /// <param name="args">参数值</param>
    /// <returns></returns>
    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);
            //注意classname一定要赋值获取 
            classname = sd.Services[0].Name;

            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 icc = new CSharpCodeProvider();


            //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));
            // return "Error:WebService调用错误！" + ex.Message;
        }
    }
    private static string GetWsClassName(string wsUrl)
    {
        string[] parts = wsUrl.Split('/');
        string[] pps = parts[parts.Length - 1].Split('.');
        return pps[0];
    }
    #endregion
}