Class for dynamic WebService calls by code

Using system; using system. collections. generic; using system. componentmodel; using system. data; using system. drawing; using system. LINQ; using system. text; using system. windows. forms; using system. net; using system. io; using system. web;// Right-click to add the. NET component system. Web, system. Web. Services, and system. Web. Extensions.Using system. web. services; using system. web. services. description; using system. web. services. protocols; using system. XML. serialization; using system. codedom; using system. codedom. compiler; using system. reflection; namespace mywebservicenamespace {class mywebserviceclass {// <summary> // WebService returns string, use this method /// </Summary> /// <Param name = "url"> call the WebService URL </param> /// <Param name = "classname"> W Ebservice class </param> /// <Param name = "methodname"> parameters of the WebService method </param> /// <Param name = "Parameters"> </param> /// <returns> string </returns> Public String resultstring (string URL, string classname, string methodname, object [] parameters) {string resulta = ""; try {// 1. use WebClient to download the WSDL information. WebClient client = new WebClient (); url = URL + "? WSDL "; stream = client. openread (URL); // 2. Create and format the WSDL document. Servicedescription description = servicedescription. Read (Stream); // 3. Create a client proxy class. Servicedescriptionimporter importer = new servicedescriptionimporter (); // create a client proxy class. Importer. protocolname = "Soap"; // specify the access protocol. Importer. Style = servicedescriptionimportstyle. Client; // generate a client proxy. Importer. codegenerationoptions = codegenerationoptions. generateproperties | codegenerationoptions. generatenewasync; importer. addservicedescription (description, null, null); // Add a WSDL document. // 4. Use codedom to compile the client proxy class. Codenamespace nmspace = new codenamespace (); // namespace codecompileunit unit = new codecompileunit (); unit. namespaces. add (nmspace); servicedescriptionimportwarnings warning = importer. import (nmspace, Unit); codedomprovider provider = codedomprovider. createprovider ("CSHARP"); compilerparameters parameter = new compilerparameters (); parameter. generateexecutable = false; parameter. referencedassemblies. ad D ("system. DLL "); parameter. referencedassemblies. add ("system. XML. DLL "); parameter. referencedassemblies. add ("system. web. services. DLL "); parameter. referencedassemblies. add ("system. data. DLL "); compilerresults result = provider. compileassemblyfromdom (parameter, Unit); // 5. use reflection to call WebService. Assembly ASM = result. compiledassembly; type T = ASM. getType (classname); // The parameter is the class name object o = Activator In the web service. createinstance (t); methodinfo method = T. getmethod (methodname); // parameter method name resulta = (string) method. invoke (O, parameters);} catch (exception ex) {resulta = ex. tostring () ;}return resulta ;}/// <summary> /// WebService returns dataset, use this method /// </Summary> /// <Param name = "url"> call the WebService URL </P Aram> /// <Param name = "classname"> WebService class </param> /// <Param name = "methodname"> call WebService method </param>/ // <Param name = "Parameters"> parameter </param> // <returns> dataset </returns> Public dataset resultdataset (string URL, string classname, string methodname, object [] parameters) {dataset resulta = NULL; try {// 1. use WebClient to download the WSDL information. WebClient client = new WebClient (); url = URL + "? WSDL "; stream = client. openread (URL); // 2. Create and format the WSDL document. Servicedescription description = servicedescription. Read (Stream); // 3. Create a client proxy class. Servicedescriptionimporter importer = new servicedescriptionimporter (); // create a client proxy class. Importer. protocolname = "Soap"; // specify the access protocol. Importer. Style = servicedescriptionimportstyle. Client; // generate a client proxy. Importer. codegenerationoptions = codegenerationoptions. generateproperties | codegenerationoptions. generatenewasync; importer. addservicedescription (description, null, null); // Add a WSDL document. // 4. Use codedom to compile the client proxy class. Codenamespace nmspace = new codenamespace (); // namespace codecompileunit unit = new codecompileunit (); unit. namespaces. add (nmspace); servicedescriptionimportwarnings warning = importer. import (nmspace, Unit); codedomprovider provider = codedomprovider. createprovider ("CSHARP"); compilerparameters parameter = new compilerparameters (); parameter. generateexecutable = false; parameter. referencedassemblies. ad D ("system. DLL "); parameter. referencedassemblies. add ("system. XML. DLL "); parameter. referencedassemblies. add ("system. web. services. DLL "); parameter. referencedassemblies. add ("system. data. DLL "); compilerresults result = provider. compileassemblyfromdom (parameter, Unit); // 5. use reflection to call WebService. Assembly ASM = result. compiledassembly; type T = ASM. getType (classname); // The parameter is the class name object o = Activator In the web service. createinstance (t); methodinfo method = T. getmethod (methodname); // parameter method name resulta = (Dataset) method. invoke (O, parameters);} catch (exception ex) {MessageBox. show (ex. tostring () ;}return resulta ;}}}

The above is the code in. CS.

        private void button3_Click(object sender, EventArgs e)        {            myWebServiceNameSpace.myWebServiceClass myWeb = new myWebServiceNameSpace.myWebServiceClass();            string url = "http://10.19.1.55/123/WebService1.asmx";            string className = "WebService1";            string methodName = "addition";            object[] parameters = new object[2];            parameters[0] = 1;            parameters[1] = 2;            double a = myWeb.resultString(url, className, methodName, parameters);            MessageBox.Show(a.ToString());                    }

The above is the code in the main program.