override error message (The value 'xxx' is not valid for Age) when input incorrect data type for input field asp.net mvc

user_147572 0
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I've tried to override error message when input incorrect data type in input field on HTML form. For example I have the model like this.

public class Person
{
    public string FirstName {get;set;}
    public int Age {get;set;}
}

For view, I put text input for Age to get it value.

When type some string in Age text box like 'test' and press submit button. I got this error message

The value 'xxx' is not valid for Age

However, I want to change this message and try many way. There 's nothing effect this message value.

Please could you help me to solve this problem.

asp.net-mvc asp.net c#
5 Answers

I just wanted to show the Range attribute error message so I used the answer from wechel and Christna and changed it so the RangeAttribute is used. After adding the Validator class, only a custom Validator needs to be created and registered in the global.asax as shown in wechel's answer.

You also need to add a validation message with name "FieldRangeValidation" to your resource bundle. In my project it contains the following text: "Value must be between {0} and {1}"

public class ValidIntegerRangeValidator : DataAnnotationsModelValidator<RangeAttribute>
{
    public ValidIntegerRangeValidator(ModelMetadata metadata, ControllerContext context, RangeAttribute attribute)
        : base(metadata, context, attribute)
    {
        try
        {
            if (attribute.IsValid(context.HttpContext.Request.Form[metadata.PropertyName]))
            {
                return;
            }                
        }
        catch (OverflowException)
        {
        }

        var propertyName = metadata.PropertyName;
        context.Controller.ViewData.ModelState[propertyName].Errors.Clear();
        context.Controller.ViewData.ModelState[propertyName].Errors.Add(string.Format(Resources.Resources.FieldRangeValidation, attribute.Minimum, attribute.Maximum));
    }
}
user_11226290 
        if (ModelState["Age"].Errors.Count > 0)
        {
            ModelState["Age"].Errors.Clear();
            ModelState["Age"].Errors.Add("<your error message>");
        }
user_9032460
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