Dynamic WebServices calling

Dynamic webservices means when we call webservice without adding web refernces in our website. So lines of code call any webservice dynamicvally.

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections.Generic;
using System.Net;
using System.Text;
using System.Reflection;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Security.Permissions;
using System.Web.Services.Description;

/// Summary description for WebServiceReference

namespace ConnectionLib
public class WebServiceReference
public WebServiceReference()
// TODO: Add constructor logic here
[SecurityPermissionAttribute(SecurityAction.Demand, Unrestricted = true)]
public static object CallWebService(string serviceName, string methodName, object[] args)
System.Net.WebClient client = new System.Net.WebClient();
string webServiceAsmxUrl = GetServicePath(serviceName);
// Connect To the web service
WebRequest webRequest = WebRequest.Create(webServiceAsmxUrl + "?wsdl");
System.IO.Stream stream1 = webRequest.GetResponse().GetResponseStream();
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 = new CompilerParameters(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);
Type Item = wsvcClass.GetType();
PropertyInfo[] GetProperties = Item.GetProperties();
MethodInfo[] m2 = wsvcClass.GetType().GetMethods();
Type Item1 = m2[2].ReturnType;
object obj = Activator.CreateInstance(Item1);
Int64? value = 12345;
PropertyInfo PropInfo = obj.GetType().GetProperty("PropertyName");
PropInfo.SetValue(obj, value, null);
MethodInfo mi = wsvcClass.GetType().GetMethod(methodName);
object ReturnParameter = mi.Invoke(wsvcClass, args);
return ReturnParameter;
return null;
private static string GetServicePath(string ServiceName)
return ConfigurationManager.AppSettings[ServiceName];

If more need help mail me at vigneshwar_gupta@yahoo.com

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