WPF

public void setSliderOrientation(Orientation whichWay)
{
    this.slider1.Orientation = whichWay;
}

public Orientation sliderOrientation
{
    set { slider1.Orientation = value;  }
    get { return slider1.Orientation; }
}

mehdibahadori wrote:

equivalent method Dispose()(in c#) in WPF?

IsEnabled="{Binding ElementName=MyWindow,Path=IsValidNewSet}"

public class NewSet : INotifyPropertyChanged
{
  private bool _isValid;
  public bool IsValidNewSet
  {
    get { return _isValid; }
    set
    {
      if (_isValid != value)
      {
        _isValid = value;
        OnChanged("IsValidNewSet");
      }
    }
  }

  protected virtual void OnChanged(string propertyName)
  {
    PropertyChangedEventHandler handler = propertyChanged;
    if (handler != null)
    {
      handler(this, new PropertyChangedEventArgs(propertyName);
    }
  }
  public event PropertyChangedEventHandler PropertyChanged
  {
    add { propertyChanged += value; }
    remove { propertyChanged -= value; }
  }
  private event PropertyChangedEventHandler propertyChanged;
}

<Button IsEnabled="{Binding IsValidNewSet}" />