/// <summary>
/// Called just before any validation is caused.
/// </summary>
/// <param name="instance">
/// The instance that is about to be validated.
/// </param>
/// <param name="previousFieldValidationResults">
/// The previous field validation results.
/// </param>
/// <param name="previousBusinessRuleValidationResults">
/// The previous business rule validation results.
/// </param>
/// <exception cref="ArgumentNullException">
/// The <paramref name="instance"/> is <c>null</c>.
/// </exception>
/// <exception cref="ArgumentNullException">
/// The <paramref name="previousFieldValidationResults"/> is <c>null</c>.
/// </exception>
/// <exception cref="ArgumentNullException">
/// The <paramref name="previousBusinessRuleValidationResults"/> is <c>null</c>.
/// </exception>
public void BeforeValidation(object instance, List <IFieldValidationResult> previousFieldValidationResults, List <IBusinessRuleValidationResult> previousBusinessRuleValidationResults)
{
_synchronizationContext.Acquire();
try
{
foreach (IValidator validator in _validators)
{
validator.BeforeValidation(instance, previousFieldValidationResults, previousBusinessRuleValidationResults);
}
}
catch (Exception)
{
_synchronizationContext.Release();
throw;
}
}