StackOverflow2013

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plurals

PO
primarykey
Id
9463644
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
4
CommunityOwnedDate
CreationDate
2012-02-27T10:42:59.557
FavoriteCount
0
LastActivityDate
2012-02-29T08:58:10.567
LastEditDate
2012-02-29T08:58:10.567
LastEditorUserId
1235376
OwnerUserId
1235376
ParentId
3556504
PostTypeId
2
Score
25
ViewCount
0
LastEditorDisplayName
text
Body
After spending a couple of hours looking around, I see no one really has a suitable answer to this. I have found a solution that works for me so I thought I'd post it. The problem for me was validating a nullable int. When a non valid value was entered by the user, the default message "The value 'dsfd' is not valid for Issue'. The solution I came up with was to remove the errors from the model state and add my own. The classes to perform the validation are below: <pre><code>[AttributeUsage(AttributeTargets.Field | AttributeTargets.Method | AttributeTargets.Parameter | AttributeTargets.Property, AllowMultiple = false)] public class ValidInteger : ValidationAttribute { protected override ValidationResult IsValid(object value, ValidationContext validationContext) { if (value == null || value.ToString().Length == 0) { return ValidationResult.Success; } int i; return !int.TryParse(value.ToString(), out i) ? new ValidationResult(ErrorMessage) : ValidationResult.Success; } } public class ValidIntegerValidator : DataAnnotationsModelValidator<ValidInteger> { public ValidIntegerValidator(ModelMetadata metadata, ControllerContext context, ValidInteger attribute) : base(metadata, context, attribute) { if(!attribute.IsValid(context.HttpContext.Request.Form[attribute.ObjectId])) { var propertyName = metadata.PropertyName; context.Controller.ViewData.ModelState[propertyName].Errors.Clear(); context.Controller.ViewData.ModelState[propertyName].Errors.Add(attribute.ErrorMessage); } } } </code></pre> Don't forget you'll also need to register the adapter in the global Application_Start() <pre><code>DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(ValidInteger), typeof(ValidIntegerValidator)); </code></pre> And decorate your property with the new attribute <pre><code>[ValidInteger(ErrorMessage = "Please enter a valid number for issue")] </code></pre>
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1. This table or related slice is empty.
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1. POoverride error message (The value 'xxx' is not valid for Age) when input incorrect data type for input field asp.net mvc
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USwechel
UserOwnerUserId
1. USwechel
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1. VO
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2. VO
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