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POAsp.net mvc4 validation check if property values are the same
 

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  1. POAsp.net mvc4 validation check if property values are the same
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    <p>I have tried to compare password and confirm password on a form using validation attributes but when I submit the form with different values on the two fields an error is not displayed next to the confirm password field. </p> <p>I have tried the method for MVC3 validation on this <a href="https://stackoverflow.com/questions/8473671/mvc3-validation-check-if-property-values-differ">question</a> but it didn't help.</p> <p>Here is the source code:</p> <pre><code>//Model using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; using System.ComponentModel.DataAnnotations.Schema; using System.Data.Entity; using System.Globalization; using System.Web.Security; using System.Web.Mvc; using mvcdemo.Validation; namespace mvcdemo.Models { public class User:IValidatableObject { public int userid { get; set; } [Required] [Remote("Username", "User",ErrorMessage = "The username is not allowed.")] //remote server validation asynchronous public string username { get; set; } public string password { get; set; } [PasswordCreationRule("password",ErrorMessage ="Password and Confirm Password have to be the same")] public string ConfirmPassword { get; set; } public string email { get; set; } public int roleid { get; set; } [Required] [Display(Name = "Password at first logon status")] public string passwordatfirstlogonstatus { get; set; } } public class UserDBContext : DbContext { public DbSet&lt;User&gt; users { get; set; } } public class administrator : User { } } // Validation class using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.ComponentModel.DataAnnotations; using System.Reflection; namespace mvcdemo.Validation { [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false, Inherited = true)] public class PasswordCreationRuleAttribute:ValidationAttribute { private const string defaultErrorMessage = "{0} cannot be different same as {1}."; private string otherProperty; public PasswordCreationRuleAttribute(string otherProperty): base(defaultErrorMessage) { if(string.IsNullOrEmpty(otherProperty)) { throw new ArgumentNullException("otherProperty"); } this.otherProperty = otherProperty; } public override string FormatErrorMessage(string name) { return string.Format(ErrorMessageString, name, otherProperty); } protected override ValidationResult IsValid(object value,ValidationContext validationContext) { if (value != null) { PropertyInfo otherPropertyInfo = validationContext.ObjectInstance.GetType().GetProperty(otherProperty); if (otherPropertyInfo == null) { return new ValidationResult(string.Format("Property '{0}' is undefined.", otherProperty)); } var otherPropertyValue = otherPropertyInfo.GetValue(validationContext.ObjectInstance, null); if (otherPropertyValue != null) { if (value.Equals(otherPropertyValue)) { return ValidationResult.Success; } else { return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName)); } } } return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName)); } } } </code></pre>
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    1. COPlease post a sample of your code so that we can determine where it's going wrong.
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      1. USDan Neely
    2. COMake sure you're using the correct Compare attribute. I've found there are at least two that can be seen within a typical MVC install with standard libraries.
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      1. USBrad Christie
    3. COI have already added the source code @DanNeely
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