Crazy Linq: performing System.ComponentModel.DataAnnotations validation in a single statement
Posted
by Daniel Cazzulino
on ASP.net Weblogs
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Published on Thu, 15 Apr 2010 17:08:26 GMT
Indexed on
2010/04/15
17:13 UTC
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.NET
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public static IEnumerable<ValidationResult> Validate(object component)
{
return from descriptor in TypeDescriptor.GetProperties(component).Cast<PropertyDescriptor>()
from validation in descriptor.Attributes.OfType<System.ComponentModel.DataAnnotations.ValidationAttribute>()
where !validation.IsValid(descriptor.GetValue(component))
select new ValidationResult(
validation.ErrorMessage ?? string.Format(CultureInfo.CurrentUICulture, "{0} validation failed.", validation.GetType().Name),
new[] { descriptor.Name });
}
...
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