.Net动态调用WebService

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Net;
using System.Web.Services;
using System.Web.Services.Description;
using Microsoft.CSharp;
/// <summary>
/// WebServiceHelper 的摘要说明
/// </summary>
public class WebServiceHelper
{
public WebServiceHelper()
{
  //
  // Todo: 在此处添加构造函数逻辑
  //
}
    /// <summary>
    /// 动态调用WebService
    /// </summary>
    /// <param name="url">WebService地址</param>
    /// <param name="methodname">方法名(模块名)</param>
    /// <param name="args">参数列表</param>
    /// <returns>object</returns>
    public static object InvokeWebService(string url,string methodname,object[] args)
    {
        return InvokeWebService(url,null,methodname,args);
    }
    /// <summary>
    /// 动态调用WebService
    /// </summary>
    /// <param name="url">WebService地址</param>
    /// <param name="classname">类名</param>
    /// <param name="methodname">方法名(模块名)</param>
    /// <param name="args">参数列表</param>
    /// <returns>object</returns>
    public static object InvokeWebService(string url,string classname,object[] args)
    {
        string @namespace = "ServiceBase.WebService.DynamicWebLoad";
        if (classname == null || classname == "")
        {
            classname = WebServiceHelper.GetClassName(url);
        }
        ///动态调用类所执行的过程
        //1.获取服务描述语言(WSDL)
        WebClient wc = new WebClient();
        Stream stream = wc.OpenRead(url + "?WSDL");
        ServiceDescription sd = ServiceDescription.Read(stream);//设置Web服务描述语言
        ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();//生成客户端代理类
        sdi.AddServiceDescription(sd,"","");
        CodeNamespace cn = new CodeNamespace(@namespace);//声明命名空间
        //2.生成客户端代理类代码
        CodeCompileUnit ccu = new CodeCompileUnit();//为CodeDOM程序图形提供容器
        ccu.Namespaces.Add(cn);//获取命名空间集合
        sdi.Import(cn,ccu);
        CSharpCodeProvider csc = new CSharpCodeProvider();//提供对 C# 代码生成器和代码编译器的实例的访问
        ICodeCompiler icc = csc.CreateCompiler();//定义用于调用源代码编译的接口或使用指定编译器的 CodeDOM 树
        //3.设定编译器的参数
        CompilerParameters cplist = new CompilerParameters();
        cplist.GenerateExecutable = false;//设置是否为可执行文件
        cplist.GenerateInMemory = true;//设置是否在内存中生成输出
        cplist.ReferencedAssemblies.Add("System.dll");
        cplist.ReferencedAssemblies.Add("System.XML.dll");
        cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
        cplist.ReferencedAssemblies.Add("System.Data.dll");
        //4.编译代理类
        CompilerResults cr = icc.CompileAssemblyFromDom(cplist,ccu);//使用指定的编译器设置编译程序集
        if (true == cr.Errors.HasErrors)
        {
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            foreach (CompilerError ce in cr.Errors)
            {
                sb.Append(ce.ToString());
                sb.Append(System.Environment.NewLine);
            }
            throw new Exception(sb.ToString());
        }
        //5.生成代理实例,并调用方法
        System.Reflection.Assembly assembly = cr.CompiledAssembly;//获取或设置已编译的程序集
        Type t = assembly.GetType(@namespace + "." + classname,true,true);
        object obj = Activator.CreateInstance(t);//为 COM 对象提供对方法的版本无关的访问
        System.Reflection.MethodInfo mi = t.getmethod(methodname);//通过反射获得方法名
        return mi.Invoke(obj,args);//使用制定的参数调用当前实例所表示的方法，执行方法
    }
    private static string GetClassName(string url)
    {
        string[] parts = url.Split('/');
        string[] pps = parts[parts.Length - 1].Split('.');
        return pps[0];
    }
}
-------------------------------------------------------------------------------------------
    protected void Button2_Click(object sender,EventArgs e)
    {
        string WebServiceUrl = "http://222.90.232.40:8899/webservice/WebService.asmx";
        string WebServiceMethodname = "QueryData";
        object[] args = new object[2];
        args[0] = "select ID,JKZJMC from JKZJLB";
        args[1] = "data source=oradb;uid=movepolicepdasc;pwd=movepolicepdasc";
        DataSet result = (DataSet)WebServiceHelper.InvokeWebService(WebServiceUrl,WebServiceMethodname,args);
        GridView1.DataSource = result.Tables[0];
        GridView1.DataBind();
    }
--------------------------------------------------------------------------------------------
    [WebMethod]
    public void SendToUrl()
    {
        HttpContext.Current.Response.Redirect("http://222.90.232.40:8899/webservice/WebService.asmx",false);    }

.Net动态调用WebService

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