Display_D_HP/TeamAAS-VM/ValidationRules/TextValidationRule.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;

namespace TeamAAS_VP.ValidationRules
{
    public class TextValidationRule : ValidationRule
    {
        public override ValidationResult Validate(object value, System.Globalization.CultureInfo cultureInfo)
        {
            string input = value as string;

            // 例如：输入不能为空
            if (string.IsNullOrWhiteSpace(input))
            {
                return new ValidationResult(false, "Input cannot be empty.".Replace("\\n", Environment.NewLine).Replace("\\t", "\t"));
            }

            // 你可以添加更多的验证逻辑，例如检查输入是否符合某种格式
            return ValidationResult.ValidResult;
        }
    }
}