using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using MessageBox = MaxwellControl.Controls.MessageBox;

namespace MainShell.Common.ControlAttribute
{
    public class NumericValidationRule : ValidationRule
    {
        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            string strValue = value as string;
            if (string.IsNullOrEmpty(strValue))
            {
                // 空值是允许的，如果需要必填，则返回 new ValidationResult(false, "不能为空");
                return new ValidationResult(false, "不能为空");
            }

            // 尝试将字符串转换为double
            if (double.TryParse(strValue, out _))
            {
                return ValidationResult.ValidResult;
            }
            else
            {
                return new ValidationResult(false, "请输入有效的数字。");
            }
        }
    }
}