Tip: How to implement INotifyPropertyChanged interface?

Awesome stuff man. Helped me a lot. Thanks

Be Safe

protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
{
    PropertyChangedEventHandler eventHandler = this.PropertyChanged;
    if (eventHandler != null)
    {
        eventHandler(this, e);
    }
}

Hi i have problem with using timer in my slApp, i have textbox and bind its text to property of object which is in page.datacontext

first time i see the value of this property, but if i try to change it in the method calld when timer elapsed, it isnt in textbox.

 public class vm
    {
        string s = "nejakyString";
        public event EventHandler SChanged;
        public string S
        {
            get { return s; }
            set { s = value;
                raiseEventPropertyChanged("S");
            }
        } public class vm
    {
        string s = "nejakyString";
        public event EventHandler SChanged;
        public string S
        {
            get { return s; }
            set { s = value;
                raiseEventPropertyChanged("S");
            }
        }
public event PropertyChangedEventHandler PropertyChanged;
        private void raiseEventPropertyChanged(string propertyName)
        {
          if (PropertyChanged != null)
            {           
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
           }

Page.xaml.cs

            TimerCallback timerDelegate =
                new TimerCallback(elapsed);

            vievModel = new vm();
            this.DataContext = vievModel;

 

   public void elapsed(Object stateInfo)
    {vievModel.S += DateTime.Now.ToString();}

Page.xaml

<TextBox  Name="mujTextbox" Text="{Binding Path=S}"

thanks for helping me.