NotNullRule.cs 504 Bytes
using System.Globalization;
using System.Windows.Controls;

namespace HHECS.WinCommon.ValueRules
{
    public class NotNullRule : ValidationRule
    {
        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            if (value == null)
            {
                return new ValidationResult(false, "值不能为null");
            }
            else
            {
                return new ValidationResult(true, null);
            }
        }
    }
}