Consuming WSDL url in c# Code behind!!

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C#

service

web

WSDL

I have wsdl url(https://sample/url/serviceName?wsdl), I have service name and service method name and I have to pass two parameters while invoking that method.
I can't consume web service by adding web reference to project. So I have to do it in c# code behind of a windows application. Please see the below code which I have.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
//Added for samplecode
using System.CodeDom.Compiler;
using System.Security.Permissions;
using System.Web.Services.Description;
using System.Reflection;
using System.CodeDom;
using System.Diagnostics;
 
namespace DynamicSoap
{
 
    public static class DynamicWebService
    {
 
        public static Object CallWebService(string webServiceAsmxUrl,
           string serviceName, string methodName, object[] args)
        {
 
            try
            {
                System.Net.WebClient client = new System.Net.WebClient();
 
                //-Connect To the web service
                System.IO.Stream stream = client.OpenRead(webServiceAsmxUrl + "?wsdl");
 
                //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 codenamespace = new CodeNamespace();
                CodeCompileUnit codeunit = new CodeCompileUnit();
                codeunit.Namespaces.Add(codenamespace);
 
                //Import the service into the Code-DOM tree. 
                //This creates proxy code that uses the service.

                ServiceDescriptionImportWarnings warning = importer.Import(codenamespace, codeunit);
 
                if (warning == 0)
                {
 
                    //--Generate the proxy code
                    CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
 
                    //--Compile the assembly proxy with the 
                    //  appropriate references
                    string[] assemblyReferences = new string[]  {
                       "System.dll", 
                       "System.Web.Services.dll", 
                       "System.Web.dll", 
                       "System.Xml.dll", 
                       "System.Data.dll"};
 
                    //--Add parameters
                    CompilerParameters parms = new CompilerParameters(assemblyReferences);
                    parms.GenerateInMemory = true; //(Thanks for this line nikolas)
                    CompilerResults results = provider.CompileAssemblyFromDom(parms, codeunit);
                    
                    //--Check For Errors
                    if (results.Errors.Count > 0)
                    {
 
                        foreach (CompilerError oops in results.Errors)
                        {
                            System.Diagnostics.Debug.WriteLine("========Compiler error============");
                            System.Diagnostics.Debug.WriteLine(oops.ErrorText);
                        }
                        throw new Exception("Compile Error Occured calling WebService.");
                    }
 
                    //--Finally, Invoke the web service method
                    Object wsvcClass = results.CompiledAssembly.CreateInstance(serviceName);
                    MethodInfo mi = wsvcClass.GetType().GetMethod(methodName);
                    return mi.Invoke(wsvcClass, args);
 
                }
                else
                {
                    return null;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}

In the above code while importing
ServiceDescriptionImportWarnings warning = importer.Import(codenamespace, codeunit);
warning should come 0 then only it would go inside the if statement. But I'm getting 'CodeNotGenerated'

I'm not able to figure out what the problem is. Can anyone pls explain??















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