Users Online

We have 40 guests online
Dynamically Load WSDL Web Service PDF Print E-mail
Written by Zack MIlls   
Tuesday, 12 October 2010 08:07

Dynamically Load WSDL Web Service Code to try


using System;

using System.Collections.Generic;

using System.Text;

using System.Reflection;

using System.CodeDom;

using System.CodeDom.Compiler;

using System.Security.Permissions;

using System.Web.Services.Description;


namespace ConnectionLib


internal class WsProxy


[SecurityPermissionAttribute(SecurityAction.Demand, Unrestricted = true)]

internal static object CallWebService(string webServiceAsmxUrl, string serviceName,string methodName, object[] args)


System.Net.WebClient client = new System.Net.WebClient();

// Connect To the web service

System.IO.Stream stream = client.OpenRead(webServiceAsmxUrl + "?wsdl");

// Now read the WSDL file describing a service.

ServiceDescription description = ServiceDescription.Read(stream);

///// LOAD THE DOM /////////

// Initialize a service description importer.

ServiceDescriptionImporter importer = new ServiceDescriptionImporter();

importer.ProtocolName = "Soap12"; // Use SOAP 1.2.

importer.AddServiceDescription(description, null, null);

// Generate a proxy client.

importer.Style = ServiceDescriptionImportStyle.Client;

// Generate properties to represent primitive values.

importer.CodeGenerationOptions = System.Xml.Serialization.CodeGenerationOptions.GenerateProperties;

// Initialize a Code-DOM tree into which we will import the service.

CodeNamespace nmspace = new CodeNamespace();

CodeCompileUnit unit1 = new CodeCompileUnit();


// Import the service into the Code-DOM tree. This creates proxy code that uses the service.

ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit1);

if (warning == 0) // If zero then we are good to go


// Generate the proxy code

CodeDomProvider provider1 =CodeDomProvider.CreateProvider("CSharp");

// Compile the assembly proxy with the appropriate references

string[] assemblyReferences = new string[5] { "System.dll","System.Web.Services.dll", "System.Web.dll", "System.Xml.dll","System.Data.dll" };

CompilerParameters parms = newCompilerParameters(assemblyReferences);

CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1);

// Check For Errors

if (results.Errors.Count > 0)


foreach (CompilerError oops in results.Errors)


System.Diagnostics.Debug.WriteLine("========Compiler error============");



throw new System.Exception("Compile Error Occured calling webservice. Check Debug ouput window.");


// Finally, Invoke the web service method

object wsvcClass = results.CompiledAssembly.CreateInstance(serviceName);

MethodInfo mi = wsvcClass.GetType().GetMethod(methodName);

return mi.Invoke(wsvcClass, args);




return null;







More Code



MethodInfo[] methods = service.GetMethods();
foreach (MethodInfo method in methods)
if (isWebServiceMethod(method))
//Add in the list box or any container
public static bool isWebServiceMethod(MemberInfo pMethodInfo) {
return (Attribute.GetCustomAttribute(pMethodInfo, typeof(System.Web.Services.Protocols.SoapDocumentMethodAttribute), false)!=null ||
Attribute.GetCustomAttribute(pMethodInfo, typeof (System.Web.Services.Protocols.SoapRpcMethodAttribute), false) != null);