Custom Validation Attribute is not called ASP.NET MVC
Hello everyone I have create custom validation attribute and assign it to class level validation. Unfortunately, it is not called. I try every way that it think it could be solve the problem. However, it take me for hours and I can't find the attribute is not called by validation mechanism.
For illustrate you I put the following code.
Attribute
[AttributeUsage(AttributeTargets.Class, AllowMultiple = true, Inherited = true)]
public sealed class BooleanDependencyAttribute : ValidationAttribute
{
private const string _defaultErrorMessage = "กรุณากรอก{0}";
private readonly object _typeId = new object();
public string DependencyPropertyName { get; private set; }
public string DependentPropertyName { get; private set; }
public BooleanDependencyAttribute(string dependencyPropertyName, string dependentPropertyName)
: base(_defaultErrorMessage)
{
DependencyPropertyName = dependencyPropertyName;
DependentPropertyName = dependentPropertyName;
}
public override object TypeId
{
get
{
return _typeId;
}
}
public override string FormatErrorMessage(string name)
{
return String.Format(CultureInfo.CurrentUICulture, ErrorMessageString,name);
}
public override bool IsValid(object value)
{
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(value);
bool dependencyValue = (bool) properties.Find(DependencyPropertyName, true /* ignoreCase */).GetValue(value);
object dependentValue = properties.Find(DependentPropertyName, true /* ignoreCase */).GetValue(value);
if (dependencyValue)
{
return true;
}
else
{
if (dependentValue == null)
{
return false;
}
else
{
return true;
}
}
}
}
ViewModel
[BooleanDependency("ReleaseNow","ReleaseDate",ErrorMessage="Please enter release date")]
public class ContentCreate
{
public string Title { get; set; }
public DateTime? ReleaseDate { get; set; }
public string Details { get; set; }
public string Abstract { get; set; }
public string Tags { get; set; }
public bool ReleaseNow { get; set; }
}
Please could you help me to solve this problem.
I found the solution. In fact validation in class level is called after all property-level validations are valid. Therefore I need to complete other required property then BooleanDependencyAttribute will called and valid value.
Thanks for view, edit the title and tag.
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