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POASP.Net (3.5) MVC partial class for rule validation
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copied!<p>I have 2 projects. A data project, which contains my database and my Entity Framework model. I have table called 'User', and then have a generated EF class for user.</p> <p>I am trying to add a partial class:</p> <pre><code>using System; using System.Collections.Generic; using System.Data.Linq; using System.Linq; using System.Text; namespace Data { public partial class user { public bool isValid { get { return (GetRuleViolations().Count()==0); } } public IEnumerable<RuleViolation> GetRuleViolations() { yield break; } partialvoid OnValidate(ChangeAction action) { if (isValid) throw new ApplicationException("Rule violation prevents saving"); } } public class RuleViolation { public string ErrorMessage { get; private set; } public string PropertyName { get; private set; } public RuleViolation (string errorMessage) { ErrorMessage = errorMessage; } public RuleViolation(string errorMessage, string propertyName) { ErrorMessage = errorMessage; PropertyName = propertyName; } } } </code></pre> <p>This is following the MVC 1.0 NerdDinner example. However, I am getting a design time error on the OnValidate method:</p> <pre><code> partial void OnValidate(ChangeAction action) { if (isValid) throw new ApplicationException("Rule violation prevents saving"); } </code></pre> <p>No definining declaration found for implimenting declaration of partial method 'void OnValidate(ChangeAction action)'</p> <p>What am I doing wrong?</p>

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