看看这个post on SO。基本上,通过示例propertiesMustMatch验证来了解如何将数据注释与多个属性一起使用。这是什么新的代码可能是一个快速刺(注意,可能不是100%的上限语法正确,半成品)
[AttributeUsage(AttributeTargets.Class, AllowMultiple = true, Inherited = true)]
public sealed class RequiredMedicalNum: ValidationAttribute
{
private const string _defaultErrorMessage = "{0} is required when certified is true";
private readonly object _typeId = new object();
public RequiredMedicalNum(string medicalNum, string Certified)
: base(_defaultErrorMessage)
{
_medicalNum = medicalNum;
_certified= Certified;
}
public string _medicalNum
{
get;
private set;
}
public string _certified
{
get;
private set;
}
public override object TypeId
{
get
{
return _typeId;
}
}
public override string FormatErrorMessage(string name)
{
return String.Format(CultureInfo.CurrentUICulture, ErrorMessageString,
_medicalNum, _certified);
}
public override bool IsValid(object value)
{
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(value);
object medicalNum = properties.Find(_medicalNum, true /* ignoreCase */).GetValue(value);
object certified= properties.Find(_certified, true /* ignoreCase */).GetValue(value);
if(certified == 1){
Return String.IsNullOrEmpty(medicalNum);
}
}
}
感谢汤米,我会看一看的链接,我很欣赏你的代码。今天下午会尝试它,并从它的外观,应该是我正在寻找的。 – 2010-07-15 18:42:16