Chat application in Expression Blend Using Silverlight

Step 15 : Now make a class named chatclass which gets the user name and sets it value respectively. write this code for this:

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Collections.ObjectModel;// add these namespaces
using System.ComponentModel;
namespace Chatting_application
{
public class chatclass
{
public string uname
{
get { return uname; }
set { uname = value; }
}
private string Text1;
public string Text
{
get { return Text1; }
set { Text1 = value; }
}

Step 16 : Now to record the session add another class in named session and write the following lines for the session class.

public class session : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(String info)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(info));
}
}
private string privateRemoteUserName;
public string RemoteUserName
{
get { return privateRemoteUserName; }
set { privateRemoteUserName = value; }
}
private string privateRemoteAvatarUrl;
public string RemoteAvatarUrl
{
get { return privateRemoteAvatarUrl; }
internal set { privateRemoteAvatarUrl = value; }
}
private ObservableCollection<chatclass> privateMessageHistory;
public ObservableCollection<chatclass> MessageHistory
{
get { return privateMessageHistory; }
internal set { privateMessageHistory = value; }
}
public void SendMessage(string message)
{
MessageHistory.Add(new chatclass
{

Text = message,

uname = "Me"
});
}
public void ConnectWithRemoteUser(String remoteUserName)
{
RemoteUserName = remoteUserName;
RemoteAvatarUrl = "manoj.jpg";
MessageHistory = new ObservableCollection<chatclass>();
PropertyChanged(this, new PropertyChangedEventArgs("RemoteUserName"));
PropertyChanged(this, new PropertyChangedEventArgs("RemoteAvatarUrl"));
PropertyChanged(this, new PropertyChangedEventArgs("MessageHistory"));
}
}

Step 17 : Now you'll have to bind the class to the application for this come to the blend application and select the textbox and in the content property click on the advance property and select binding and a window opens up in this window select Elementary property and then at the bottom you see +CLR tab click on this and you find the classes that we made is shown. from this select the session and chatclass and bind them. The figure below ,makes it more clear.

Step 18 : Output