To raise all PropertyChanged Events of a ViewModel in one time I can use string.Empty for the property name in PropertyChangedEventArgs.
Since I use GalaSoft.MvvmLight.ViewModelBase.RaisePropertyChanged of MVVM Light, I get the runtime error: Message=Property not found ParamName="" Source=GalaSoft.MvvmLight.WPF4 This is because MVVM Light check all Property-Names.
I would prefer to change VerifyPropertyName in ViewModelBase
to something like this code:
/// Verifies that a property name exists in this ViewModel. This method
/// can be called before the property is used, for instance before
/// calling RaisePropertyChanged. It avoids errors when a property name
/// is changed but some places are missed.
/// <para>This method is only active in DEBUG mode.</para>
/// <param name="propertyName"></param>
public void VerifyPropertyName(string propertyName)
var myType = this.GetType();
if propertyName <> String.empty
if (myType.GetProperty(propertyName) == null)
throw new ArgumentException("Property not found", propertyName);
I think this is a common issue.