private void UpdateValueIfNecessary()
{
if (this.listeningToLostFocus)
{
this.targetPropertyState = BindingExpression.TargetPropertyState.Dirty;
if (this.IsTargetFocussed())
{
return;
}
}
this.UpdateValue();
}
private void UpdateValue()
{
Exception innerException = null;
string dataErrorInfoMessage = null;
CultureInfo cultureInfo = null;
bool flag = false;
if (this.listener == null || !this.listener.FullPathExists)
{
return;
}
this.updateState = BindingExpression.UpdateState.UpdatingSource;
try
{
object value = this.targetDO.GetValue(this.targetProperty);
if (this.binding.TargetNullValue != null)
{
object targetNullValue = null;
try
{
Type type = this.binding.TargetNullValue.GetType();
if (type == this.targetProperty.PropertyType || this.targetProperty.PropertyType.IsAssignableFrom(type))
{
targetNullValue = this.binding.TargetNullValue;
}
else
{
if (cultureInfo == null)
{
cultureInfo = this.CalculateCulture();
}
targetNullValue = this.DynamicConverter.Convert(this.binding.TargetNullValue, this.targetProperty.PropertyType, null, cultureInfo);
}
if (object.Equals(value, targetNullValue))
{
value = null;
}
}
catch (Exception e)
{
Debug.WriteLine(e.ToString());
}
}
if (this.binding.Converter != null)
{
if (cultureInfo == null)
{
cultureInfo = this.CalculateCulture();
}
value = this.binding.Converter.ConvertBack(value, this.listener.LeafType, this.binding.ConverterParameter, cultureInfo);
if (value == DependencyProperty.UnsetValue)
{
return;
}
}
if (value != null && value is string)
{
if (cultureInfo == null)
{
cultureInfo = this.CalculateCulture();
}
object obj = BindingExpression.TryParse(value, this.listener.LeafType, cultureInfo);
if (obj != DependencyProperty.UnsetValue)
{
value = obj;
}
}
try
{
if (!this.IsValidValueForUpdate(value, this.listener.LeafType))
{
if (cultureInfo == null)
{
cultureInfo = this.CalculateCulture();
}
flag = true;
value = this.DynamicConverter.Convert(value, this.listener.LeafType, null, cultureInfo);
flag = false;
}
this.listener.LeafValue = value;
}
catch (TargetInvocationException targetInvocationException)
{
Debug.WriteLine(targetInvocationException.ToString());
innerException = targetInvocationException.InnerException;
}
catch (Exception e)
{
Debug.WriteLine(e.ToString());
if (e is OutOfMemoryException || e is StackOverflowException || e is AccessViolationException || e is ThreadAbortException)
{
throw;
}
}
}
finally
{
if (this.binding.ValidatesOnDataErrors && (innerException == null || !this.binding.ValidatesOnExceptions))
{
dataErrorInfoMessage = this.GetDataErrorInfoMessage();
}
this.updateState = BindingExpression.UpdateState.None;
this.targetPropertyState = BindingExpression.TargetPropertyState.Clean;
}
ValidationError validationError = null;
if (innerException != null && this.binding.ValidatesOnExceptions)
{
validationError = new ValidationError(innerException, flag);
}
else if (!string.IsNullOrEmpty(dataErrorInfoMessage))
{
validationError = new ValidationError(dataErrorInfoMessage);
}
bool flag1 = innerException != null;
if (flag1 && !this.lastSourceUpdateThrewException)
{
this.AddNotifyDataErrorInfosToQueue(ValidationErrorEventAction.Removed);
}
this.AddErrorNotificationToQueue(ValidationErrorEventAction.Removed, this.currentValidationError);
if (!flag1 && this.lastSourceUpdateThrewException)
{
this.AddNotifyDataErrorInfosToQueue(ValidationErrorEventAction.Added);
}
this.AddErrorNotificationToQueue(ValidationErrorEventAction.Added, validationError);
ValidationError validationError1 = this.currentValidationError;
if (this.lastSourceUpdateThrewException && !flag1)
{
this.AddNotifyDataErrorInfosToTarget();
}
this.AddErrorToTarget(validationError, false);
this.RemoveErrorFromTarget(validationError1);
if (!this.lastSourceUpdateThrewException && flag1)
{
this.RemoveNotifyDataErrorInfosFromTarget();
}
this.lastSourceUpdateThrewException = flag1;
this.RaiseErrorNotifications();
}
