WPF

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}" />

Pete O'Hanlon wrote:

if you've got MSDN, Blend 3 RTM is available to download now

Mark Salsbery
Microsoft MVP - Visual C++

amit_1986 wrote:

I tried web browser but that supports only PDF hosting

Collin Jasnoch wrote:

Is it possible to have a template in a library and use it in my app?
If so how do I find it and use it?

Mark Salsbery
Microsoft MVP - Visual C++

pioner wrote:

all of them are written in sync way

pioner wrote:

How can i create proxy for sync wcf service contract manually in SL?

Mark Salsbery
Microsoft MVP - Visual C++

Mark Salsbery wrote:

That means specifying AsyncPattern=true
on your OperationContractAttributes

Michael Sync wrote:

You can just tick "async" when you are generating proxy.

Mark Salsbery
Microsoft MVP - Visual C++