Dynamic Invoker Web Service Issues

Question

I played with attributes over web services, and I saw that the SoapHttpClientProtocol class should define the WebServiceBinding attribute.

Watching the question , it seems like you cannot change attributes at runtime, how can I achieve a dynamic web service call by changing this attribute at runtime? is it possible?

[Change] I am looking for an approach to dynamically invoke the "universal style", and not to change the WebServiceBinding attribute.

This, in a nutshell, is my class:

using System.Web.Services;
using System.Web.Services.Protocols;

namespace Whatever {
    [WebServiceBinding(Name = "", Namespace = "")]
    public class WebServiceInvoker : SoapHttpClientProtocol {
        public WebServiceInvoker(string url, string ns, string bindingName) {

            ChangeNamespace(ns);
            ChangeBinding(bindingName);
            Url = url;
            // credentials, etc
    }
        public void ChangeNamespace(string ns) {
            var att = GetType().GetCustomAttributes(typeof (WebServiceBindingAttribute), true);         
            if (att.Length > 0) {
                // doesn't work
                ((WebServiceBindingAttribute)att[0]).Namespace = ns;
            }
        }
        private void ChangeBinding(string bindingName) {
            var att = GetType().GetCustomAttributes(typeof(WebServiceBindingAttribute), true);

            if (att.Length > 0) {
                // doesn't work
                ((WebServiceBindingAttribute)att[0]).Name = bindingName;
            }
        }
        public object[] MakeInvoke(string method, object[] args) {
            var res = Invoke(method, method);
            return res;
        }

        public TRet InvokeFunction<TRet>(string method) {
            //Funcion<T1, T2, T3, TRet>
            var res = Invoke(method, null);
            return MyUtils.ForceCast<TRet>(res);
        }
        public TRet InvokeFunction<T1, TRet>(string method, T1 par1) {
            //Funcion<T1, T2, T3, TRet>
            var args = new object[] { par1 };
            var res = Invoke(method, args);
            return MyUtils.ForceCast<TRet>(res);
        }
        public TRet InvokeFunction<T1, T2, TRet>(string method, T1 par1, T2 par2) {
            //Funcion<T1, T2, T3, TRet>
            var args = new object[] { par1, par2 };
            var res = Invoke(method, args);
            return MyUtils.ForceCast<TRet>(res);
        }
        public TRet InvokeFunction<T1, T2, T3, TRet>(string method, T1 par1, T2 par2, T3 par3) {
            //Funcion<T1, T2, T3, TRet>
            var args = new object[] {par1, par2, par3};
            var res = Invoke(method, args);
            return MyUtils.ForceCast<TRet>(res);
        }

        public void InvokeAction(string metodo) {
            //Funcion<T1, T2, T3, TRet>
            Invoke(method, null);
        }
        public void InvokeAction<T1>(string method, T1 par1) {
            //Funcion<T1, T2, T3, TRet>
            var args = new object[] { par1 };
            Invoke(method, args);
        }
        public void InvokeAction<T1, T2>(string method, T1 par1, T2 par2) {
            //Funcion<T1, T2, T3, TRet>
            var args = new object[] { par1, par2 };
            Invoke(method, args);
        }
        public void InvokeAction<T1, T2, T3>(string method, T1 par1, T2 par2, T3 par3) {
            //Funcion<T1, T2, T3, TRet>
            var args = new object[] { par1, par2, par3 };
            Invoke(method, args);
        }
    }
}

[Edit] I would call my class as follows:

var miProxy = new WebServiceInvoker("http://webServiceLocation", "ns", "Binding");
var res = miProxy.InvokeFunction<string, string, Entity>("MyWebMethod", stringPar1, stringPar2);

Answer 1

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Answer 5

Have you tried it

http://techmentis.blogspot.com/2011/05/dynamic-web-service-invoker.html