HKCard/HKCardIN/ValidataRule.cs

using HandyControl.Tools.Extension;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Controls;

namespace HKCardIN
{
    public class ValidataRule : ValidationRule
    {
        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            if(value.ToString().IsNullOrEmpty()) return ValidationResult.ValidResult;
            var reg = Regex.IsMatch(value.ToString(), "\\d+");
            if (!reg) return new ValidationResult(false, "请输入正整数");
            else return ValidationResult.ValidResult;
        }
    }
}