/// <summary>
/// Called when the object is validating.
/// </summary>
/// <param name="validationContext">The validation context.</param>
protected override void OnValidating(IValidationContext validationContext)
{
base.OnValidating(validationContext);
lock (_modelLock)
{
foreach (KeyValuePair <string, object> model in _modelObjects)
{
if (model.Value is null)
{
continue;
}
if (!_modelObjectsInfo[model.Key].SupportValidation)
{
continue;
}
var validatable = model.Value as IValidatable;
if (validatable != null)
{
validatable.Validate();
}
}
}
lock (ChildViewModels)
{
var previousValue = _childViewModelsHaveErrors;
_childViewModelsHaveErrors = false;
var childViewModels = ChildViewModels.ToArray();
foreach (var childViewModel in childViewModels)
{
childViewModel.Validate();
if (childViewModel.HasErrors)
{
_childViewModelsHaveErrors = true;
RaisePropertyChanged(() => HasErrors);
}
}
if (!_childViewModelsHaveErrors && _childViewModelsHaveErrors != previousValue)
{
RaisePropertyChanged(() => HasErrors);
}
}
}
/// <summary>
/// Called when the object is validating.
/// </summary>
protected override void OnValidating()
{
base.OnValidating();
lock (_modelObjects)
{
foreach (KeyValuePair <string, object> model in _modelObjects)
{
if (model.Value == null)
{
continue;
}
var modelValueAsModelBaseBase = model.Value as ModelBase;
if (modelValueAsModelBaseBase != null)
{
modelValueAsModelBaseBase.Validate();
}
}
}
lock (ChildViewModels)
{
var previousValue = _childViewModelsHaveErrors;
_childViewModelsHaveErrors = false;
var childViewModels = ChildViewModels.ToArray();
foreach (IViewModel childViewModel in childViewModels)
{
childViewModel.ValidateViewModel();
if (childViewModel.HasErrors)
{
_childViewModelsHaveErrors = true;
RaisePropertyChanged(() => HasErrors);
}
}
if (!_childViewModelsHaveErrors && (_childViewModelsHaveErrors != previousValue))
{
RaisePropertyChanged(() => HasErrors);
}
}
}
