C#

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
namespace Satis.Client
{
    internal class AuthenticationForm : Form
    {
	private string _resetPasswordUrl;
		private string _changePasswordUrl;
		private string _application;
public string ResetPasswordUrl
		{
			set
			{
				this._resetPasswordUrl = value;
			}
		}
		public string ChangePasswordUrl
		{
			set
			{
				this._changePasswordUrl = value;
			}
		}
		public string Application
		{
			set
			{
				this._application = value;
			}
		}
private void _changePasswordLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
		{
			if (!string.IsNullOrEmpty(this._changePasswordUrl))
			{
				Process.Start(this._changePasswordUrl);
			}
		}
		private void _resetPasswordLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
		{
			if (!string.IsNullOrEmpty(this._resetPasswordUrl))
			{
				Process.Start(this._resetPasswordUrl);
			}
		}
    }

    public class RTFEauthentication
    {
               IAuthentication wrapper;
        string ChangePwd = "http://gmail.com";
        string ResetPwd = "http://microsoft.com";
        string appName = "LRM";
      
        public RTFEauthentication()
        {
            wrapper = new Authentication("*****************", "LRM", "UAT", "AUTH", "1.7.3", null);
            Authentication.ChangePasswordUrl = ChangePwd;
            Authentication.ResetPasswordUrl = ResetPwd;
        }
        
public string ChangePasswordURL
        {
            get
            {
                return ChangePwd;
            }
        }
        public string ResetPasswordURL
        {
            get
            {
                return ResetPwd;
            }
        }
        public string Application
        {
            get
            {
                return appName;
            }
        }
       
        public bool ValidateRTFE()
        {
            
            object formInstance = PrivateMethodAccessHelper.GetInstanceOfClass("Satis.Client",
                "Satis.Client.AuthenticationForm", new object[] { });
                        PrivateMethodAccessHelper.SetInstancePropertyValue(formInstance.GetType(),
                "ChangePasswordUrl", formInstance, ChangePasswordURL);
            PrivateMethodAccessHelper.SetInstancePropertyValue(formInstance.GetType(),
                "ResetPasswordUrl", formInstance, ResetPasswordURL);
            PrivateMethodAccessHelper.SetInstancePropertyValue(formInstance.GetType(),
                "Application", formInstance, Application);
                       PrivateMethodAccessHelper.SetInstanceFieldValue(wrapper.GetType(),
                "_form", wrapper, formInstance);
            
            IAuthenticationResult result = wrapper.AuthenticatePopup();
            if (result == null)
                return false;
            else
                return result.Succeeded;
                }
           }

public sealed class PrivateMethodAccessHelper
    {
        public static object GetInstanceOfClass(string assembly,
                   string fullyQualifiedName, params object[] contructorParams)
        {
            return Activator.CreateInstance(Type.GetType(fullyQualifiedName + "," + assembly), contructorParams);
        }

        /// <summary>
        /// Set value of the object member.
        /// </summary>
        public static void SetInstancePropertyValue(Type typ, string propName, object objInstance, object objValue)
        {
            PropertyInfo propInfo = typ.GetProperty(propName, BindingFlags.Default | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
            if (propInfo != null)
            {
                propInfo.SetValue(objInstance, objValue, null);
            }
        }

        /// <summary>
        /// Set value of the object member.
        /// </summary>
        public static void SetInstanceFieldValue(Type typ, string fieldName, object objInstance, object objValue)
        {
            FieldInfo fieldInfo = typ.GetField(fieldName, BindingFlags.Default | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
            if (fieldInfo != null)
            {
                fieldInfo.SetValue(objInstance, objValue);
            }
        }
    }