internal IReadOnlyCollection <string> GetErrorMessages(string propertyName)
{
var propertyValidation = _propertyValidations.SingleOrDefault(f => f.PropertyName == propertyName);
if (propertyValidation == null)
{
HasErrors = false;
return(new List <string>());
}
var propertyValue = _viewModel.GetType().GetProperty(propertyName)?.GetValue(_viewModel);
var errorMessages = propertyValidation.GetValidationErrorMessages(propertyValue);
HasErrors = errorMessages.Any();
return(errorMessages);
}
public static string YearValidation(ValidatableViewModel viewmodel, string propertyname)
{
var propValue = viewmodel.GetType().GetProperty(propertyname).GetValue(viewmodel, null);
if (propValue != null)
{
string stringPropValue = propValue.ToString();
int result;
if (int.TryParse(stringPropValue, out result))
{
if (result > 1900 && result < 2100)
{
return null;
}
}
}
return "wrong year!";
}
