protected virtual void RaiseErrorsChanged(DataErrorsChangedEventArgs args)
{
OnPropertyChanged(Empty.HasErrorsChangedArgs);
OnPropertyChanged(Empty.IsValidChangedArgs);
OnPropertyChanged(Empty.IndexerPropertyChangedArgs);
if (ErrorsChanged != null)
{
ThreadManager.Invoke(Settings.EventExecutionMode, this, args, RaiseErrorsChangedDelegate);
}
#if NONOTIFYDATAERROR
string ignoreProperty = args.PropertyName ?? string.Empty;
lock (_locker)
{
//Disable validation to prevent cycle
var contains = IgnoreProperties.Contains(ignoreProperty);
if (!contains)
{
IgnoreProperties.Add(ignoreProperty);
}
try
{
OnPropertyChanged(ignoreProperty);
}
finally
{
if (!contains)
{
IgnoreProperties.Remove(ignoreProperty);
}
}
}
#endif
}
private void HandleValidationInternal(object sender, object message)
{
var validationMessage = message as AsyncValidationMessage;
if (validationMessage != null)
{
RaiseErrorsChanged(new DataErrorsChangedEventArgs(validationMessage.PropertyName));
OnHandleAsyncValidationMessage(sender, validationMessage);
return;
}
var errorsMessage = message as DataErrorsChangedMessage;
if (errorsMessage == null)
{
return;
}
OnErrorsChanged(sender, errorsMessage);
#if NONOTIFYDATAERROR
//To update property error in UI.
ThreadManager.InvokeOnUiThreadAsync(() =>
{
string ignoreProperty = errorsMessage.PropertyName ?? string.Empty;
lock (_locker)
{
//Disable validation to prevent cycle
var contains = IgnoreProperties.Contains(ignoreProperty);
if (!contains)
{
IgnoreProperties.Add(ignoreProperty);
}
try
{
OnPropertyChanged(errorsMessage.PropertyName, ExecutionMode.None);
}
finally
{
if (!contains)
{
IgnoreProperties.Remove(ignoreProperty);
}
}
}
});
#endif
}
protected void RemoveIgnoreProperty <TModel>(Func <Expression <Func <TModel, object> > > getProperty)
{
IgnoreProperties.Remove(getProperty.GetMemberName());
}
/// <summary>
/// Removes a property name to the <see cref="ValidatableViewModel.IgnoreProperties" />.
/// </summary>
protected void RemoveIgnoreProperty <TValue>(Expression <Func <T, TValue> > getProperty)
{
IgnoreProperties.Remove(getProperty.GetMemberInfo().Name);
}
