WebServiceObjectParameter

It is important to note the "incorrect" behavior of IsDirty, the internal logi of the class is not included in the consumer's proxy.

The service class:

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;

namespace WebServiceObjectParameter
{
 /// <summary>
 /// Summary description for Service1.
 /// </summary>
 public class ProfileService : System.Web.Services.WebService
 {
  public ProfileService()
  {
   //CODEGEN: This call is required by the ASP.NET Web Services Designer
   InitializeComponent();
  }

  #region Component Designer generated code
  
  //Required by the Web Services Designer
  private IContainer components = null;
    
  /// <summary>
  /// Required method for Designer support - do not modify
  /// the contents of this method with the code editor.
  /// </summary>
  private void InitializeComponent()
  {
  }

  /// <summary>
  /// Clean up any resources being used.
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if(disposing && components != null)
   {
    components.Dispose();
   }
   base.Dispose(disposing);  
  }
  
  #endregion

  
  [WebMethod]
  public RemoteProfile Save(RemoteProfile profile)
  {
   RemoteProfile savedProfile = new RemoteProfile(profile.UserId,profile.FirstName);
   
   return savedProfile;
   
  }
 [WebMethod]
  public RemoteProfile GetProfile(string userId)
  {
   if(userId ==  "Me")
   {
    return new RemoteProfile(userId,"Andrew");
   }
   else
   {
    return new RemoteProfile(userId,"Guest:" + userId);
   }

  }

 }
}

The consumer web form (all I added was a web reference to the service):

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

//using WebServiceObjectParameter;

namespace WebServiceConsumer
{
 /// <summary>
 /// Summary description for Form1.
 /// </summary>
 public class Form1 : System.Windows.Forms.Form
 {
  private System.Windows.Forms.TextBox UserId;
  private System.Windows.Forms.TextBox FirstName;
  private System.Windows.Forms.Button Lookup;
  private System.Windows.Forms.TextBox IsDirty;
  private System.Windows.Forms.Button UpdateButton;
  /// <summary>
  /// Required designer variable.
  /// </summary>
  private System.ComponentModel.Container components = null;

  public Form1()
  {
   //
   // Required for Windows Form Designer support
   //
   InitializeComponent();

   //
   // TODO: Add any constructor code after InitializeComponent call
   //
  }

  /// <summary>
  /// Clean up any resources being used.
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

  #region Windows Form Designer generated code
  /// <summary>
  /// Required method for Designer support - do not modify
  /// the contents of this method with the code editor.
  /// </summary>
  private void InitializeComponent()
  {
   this.Lookup = new System.Windows.Forms.Button();
   this.UserId = new System.Windows.Forms.TextBox();
   this.FirstName = new System.Windows.Forms.TextBox();
   this.IsDirty = new System.Windows.Forms.TextBox();
   this.UpdateButton = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // Lookup
   //
   this.Lookup.Location = new System.Drawing.Point(16, 16);
   this.Lookup.Name = "Lookup";
   this.Lookup.TabIndex = 0;
   this.Lookup.Text = "Lookup";
   this.Lookup.Click += new System.EventHandler(this.Lookup_Click);
   //
   // UserId
   //
   this.UserId.Location = new System.Drawing.Point(16, 48);
   this.UserId.Name = "UserId";
   this.UserId.TabIndex = 1;
   this.UserId.Text = "";
   //
   // FirstName
   //
   this.FirstName.Location = new System.Drawing.Point(16, 72);
   this.FirstName.Name = "FirstName";
   this.FirstName.TabIndex = 2;
   this.FirstName.Text = "";
   //
   // IsDirty
   //
   this.IsDirty.Location = new System.Drawing.Point(16, 96);
   this.IsDirty.Name = "IsDirty";
   this.IsDirty.TabIndex = 3;
   this.IsDirty.Text = "";
   //
   // UpdateButton
   //
   this.UpdateButton.Location = new System.Drawing.Point(104, 16);
   this.UpdateButton.Name = "UpdateButton";
   this.UpdateButton.TabIndex = 4;
   this.UpdateButton.Text = "Update";
   this.UpdateButton.Click += new System.EventHandler(this.Update_Click);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
   this.ClientSize = new System.Drawing.Size(292, 266);
   this.Controls.AddRange(new System.Windows.Forms.Control[] {
                    this.UpdateButton,
                    this.IsDirty,
                    this.FirstName,
                    this.UserId,
                    this.Lookup});
   this.Name = "Form1";
   this.Text = "Form1";
   this.ResumeLayout(false);

  }
  #endregion

  /// <summary>
  /// The main entry point for the application.
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }
  
  private void Lookup_Click(object sender, System.EventArgs e)
  {
   WebServiceObjectParameter.ProfileService profileService = new WebServiceObjectParameter.ProfileService();
   WebServiceObjectParameter.RemoteProfile
    profile = profileService.GetProfile(UserId.Text);

   FirstName.Text = profile.FirstName;
   IsDirty.Text = profile.IsDirty.ToString();
  }

  private void Update_Click(object sender, System.EventArgs e)
  {
   IsDirty.Text = "";
   WebServiceObjectParameter.ProfileService profileService = new WebServiceObjectParameter.ProfileService();
   WebServiceObjectParameter.RemoteProfile
    profile = profileService.GetProfile(UserId.Text);
   
   profile.FirstName = FirstName.Text;

   MessageBox.Show( profile.IsDirty.ToString());
   profile = profileService.Save(profile);

   FirstName.Text = profile.FirstName;
   IsDirty.Text = profile.IsDirty.ToString();  
  }

 }
}

The "real" RemoteProfile class is on the service provider end.

using System;

namespace WebServiceObjectParameter
{
 public class RemoteProfile
 {
  public RemoteProfile()
  {
  }
  public RemoteProfile(string userId,string firstName)
  {
   _userId = userId;
   _firstName = firstName;
   _isDirty = false;
  }
  private string _userId;
  private string _firstName;
  private bool _isDirty = false;
  public string UserId
  {
   get
   {
    return _userId;
   }
   set
   {
    if(value!=_userId)
    {
     _isDirty = true;
    }
    _userId = value;
    
   }
  }
  public string FirstName
  {
   get
   {
    return _firstName;
   }
   set
   {
    if(value!=_firstName)
    {
     _isDirty = true;
    }
    _firstName= value;
   }
  }
  public bool IsDirty
  {
   get
   {
    return _isDirty;
   }
//   set
//   {
//    _isDirty = value;
//   }
   
  }

 }
}