我需要一个DataAnnotationsModelBinder,它将与System.ComponentModel.DataAnnotations v 3.5一起使用。我在codeplex上找到了一个,但是对于V的0.99的DataAnnotations并且它不适用于v 3.5,并且我的xVal无法使用DataAnnotations v 0.99,所以我有点卡住了
答案 0 :(得分:2)
这是一个相当天真的模型绑定器,但它可能正是您正在寻找的。 p>
public class DataAnnotatedModelBinder : IModelBinder
{
private IModelBinder _defaultBinder = new DefaultModelBinder();
public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
var boundInstance = _defaultBinder.BindModel(controllerContext, bindingContext);
if (boundInstance != null) {
PerformValidation(boundInstance, bindingContext);
}
return boundInstance;
}
protected void PerformValidation(object instance, ModelBindingContext context)
{
var errors = GetErrors(instance);
if (errors.Any())
{
var rulesException = new RulesException(errors);
rulesException.AddModelStateErrors(context.ModelState, null);
}
}
public static IEnumerable<ErrorInfo> GetErrors(object instance)
{
return from prop in TypeDescriptor.GetProperties(instance).Cast<PropertyDescriptor>()
from attribute in prop.Attributes.OfType<ValidationAttribute>()
where !attribute.IsValid(prop.GetValue(instance))
select new ErrorInfo(prop.Name, attribute.FormatErrorMessage(String.Empty), instance);
}
}