检查模型在控制器之外是否有效 [英] Check if Model is valid outside of Controller

问题描述

我有一个辅助类，它传递了一个值数组，然后从我的模型传递给一个新类.我如何验证给这个类的所有值都有效?换句话说，我如何在非控制器类中使用 ModelState 的功能.

I have a helper class that is passed an array of values that is then passed to a new class from my Model. How do I verify that all the values given to this class are valid? In other words, how do I use the functionality of ModelState within a non-controller class.

来自控制器:

public ActionResult PassData()
{
    Customer customer = new Customer();
    string[] data = Monkey.RetrieveData();
    bool isvalid = ModelHelper.CreateCustomer(data, out customer);
}

来自帮手:

public bool CreateCustomer(string[] data)
{
    Customter outCustomer = new Customer();
    //put the data in the outCustomer var
    //??? Check that it's valid

}

推荐答案

您可以在 ASP.NET 上下文之外使用数据注释验证:

You could use the data annotations validation outside of an ASP.NET context:

public bool CreateCustomer(string[] data, out Customer customer)
{
    customer = new Customer();
    // put the data in the customer var

    var context = new ValidationContext(customer, serviceProvider: null, items: null);
    var results = new List<ValidationResult>();

    return Validator.TryValidateObject(customer, context, results, true);
}

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