在ASP.NET核心MVC中同时验证两个属性

using System.ComponentModel.DataAnnotations;

public class TwoPropertiesValidator : ValidationAttribute
{
    private readonly string _otherProperty;

    public TwoPropertiesValidator(string otherProperty)
    {
        _otherProperty = otherProperty;
    }

    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        var otherProperty = validationContext.ObjectType.GetProperty(_otherProperty);
        var otherPropertyValue = otherProperty.GetValue(validationContext.ObjectInstance, null);

        // 进行验证逻辑，根据需要自定义

        if (value != null && otherPropertyValue != null && value.ToString() == otherPropertyValue.ToString())
        {
            return ValidationResult.Success;
        }

        return new ValidationResult(ErrorMessage);
    }
}

public class MyModel
{
    [TwoPropertiesValidator("OtherProperty", ErrorMessage = "属性值不匹配")]
    public string Property1 { get; set; }

    public string OtherProperty { get; set; }
}

[HttpPost]
public IActionResult MyAction(MyModel model)
{
    if (ModelState.IsValid)
    {
        // 模型验证通过，执行相应的操作
        return RedirectToAction("Success");
    }

    // 模型验证失败，返回视图显示错误信息
    return View(model);
}