.net 动态调用webService

说明：

1.MySer为

<appSettings>
<add key="MySer" value="http://192.168.2.25/WebSer/Service.asmx"/>
</appSettings>

2.命名空间"UserService"自己指定

3.Service为WebService中的类

4.HelloWorld为方法

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

System.Net.ServicePointManager.CertificatePolicy = new TrustAllCertificatePolicy();//获取服务器证书策略 调用https的webservies时用，结合最后一段代码
this.Label1.Text=(string)InvokeWebservice(ConfigurationManager.AppSettings["MySer"].ToString(), "UseService", "Service", "HelloWorld", null);
}

public static object InvokeWebservice(string url, string @namespace, string classname, string methodname, object[] args)
{
try
{
System.Net.WebClient wc = new System.Net.WebClient();
System.IO.Stream stream = wc.OpenRead(url + "?WSDL");
System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream);
System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", ""); //将sd描述导入到sdi中
System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace);
System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);

Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();
System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler();

System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.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");

System.CodeDom.Compiler.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());
}
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));
}
}

}

//调用https的wenservices时用用，结合第一段代码

public class TrustAllCertificatePolicy : System.Net.ICertificatePolicy //验证服务器证书
{
public TrustAllCertificatePolicy()
{ }

public bool CheckValidationResult(ServicePoint sp,
X509Certificate cert, WebRequest req, int problem)
{
return true;//如果应遵守此证书，则为 true；否则为 false。

}
}