Silverlight / WPF - INotifyPropertyChanged in WPF C# Using Linq to sql

I try to us the  INotifyPropertyChanged  in WPF C# Using Linq to sql But i can't do this because i am using the Linq to sql Class and i search the internet for this help but i only see in whole the Net only that how to right the INotifyPropertyChanged   class as i write 


 class Student : INotifyPropertyChanged
    {
        private int StudentID;
        private string FirstName;
        private string  LastName;
        private char Gender;
        private int GPA;
        private string  MyImage;

        public int ID
        {
            get
            {
                return StudentID;
            }
            set
            {
                StudentID = value;
                OnPropertyChanged("ID");
            }
        }


        public string Name
        {
            get
            {
                return FirstName;
            }
            set
            {
                FirstName = value;
                OnPropertyChanged("Name");
            }


        }


        public double LastName
        {


            get
            {
                return LastName;
            }
            set
            {
                LastName = value;
                OnPropertyChanged("LastName");
            }
        }




        public double Gender
        {


            get
            {
                return m_Gender;
            }
            set
            {
                LastName = value;
                OnPropertyChanged("Gender");
            }
        }


        public double GPA
        {


            get
            {
                return m_GPA;
            }
            set
            {
                LastName = value;
                OnPropertyChanged("GPA");
            }
        }


        public double MyImage
        {


            get
            {
                return m_MyImage;
            }
            set
            {
                LastName = value;
                OnPropertyChanged("MyImage");
            }
        }




        #region INotifyPropertyChanged Members


        public event PropertyChangedEventHandler PropertyChanged;
        private void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
       
#endregion
    
Next step who to use in Mian window using linq to sql Clases i don't know or you can say that i even don't know that who to use ViewModel try like that as class ProductViewModel
    {
        DataClasses1DataContext db = new DataClasses1DataContext();
        private IList<Student> m_Products;
        public ProductViewModel()
        {

        }
        public IList<Product> Products
        {
            get
            {
                return m_Products;
            }
            set
            {
                m_Products = value;
            }
        }
        private ICommand mUpdater;
        public ICommand UpdateCommand
        {
            get
            {
                if (mUpdater == null)
                    mUpdater = new Updater();
                return mUpdater;
            }
            set
            {
                mUpdater = value;
            }
        }


        private class Updater : ICommand
        {
            #region ICommand Members


            public bool CanExecute(object parameter)
            {
                return true;
            }


            public event EventHandler CanExecuteChanged;


            public void Execute(object parameter)
            {


            }


            #endregion
        }

I know that i am wrong but how to use the INotifyPropertyChanged using linq to sql is my question my Student class is  
 
Class have above properties please tell me who to use INotifyPropertyChanged  Using linq to sql Class in wpf . I will be very thanks full to all those who will responding me please i a waiting for your replay please tell me in detail i am new in wpf using linq to sql class i try to update my image in which is in varBinary(MAX) type. Please pleasee


    

Wait a sec. Before we check what is wrong with INotifyPropertyChanged, the properties of Student class are not set the right way. Properties like Gender, GPA and MyImage have wrong set implmentations. They are setting the Lastname instead.

public double Gender
{...
           set
            {
                LastName = value;
                OnPropertyChanged("Gender");
            }
}

public double GPA
{...  
          set
            {
                LastName = value;
                OnPropertyChanged("GPA");
            }
}

public double MyImage
{
...
            set
            {
                LastName = value;
                OnPropertyChanged("MyImage");
            }
}
And on the MyImage property - how can you parse Image into a double value? That is wrong as well.

Please correct this first. And let us know what problems you are facing.

hi,

INotifyPropertyChanged

- You only need to implement this interface if you data class is going to change and you want those changes to propagate through to the UI.

- This interface is not required for LINQ to SQL to work

- This interface is not required to do read-once data binding

- If you’re going to be reading data from the data base and simply displaying it on the screen then you can, and should, leave this interface off as it just adds unnecessary clutter

Look at your Student class' properties. Their 'setters' are all setting LastName to value.

Try fixing that first and see if your issue goes away.

Problem is that when i try to use my student table as you use the costumer table as 
then my student table not appear or you can say that not functioning just not studnet table but all my others table as will . I short