Asp.net MVC 3验证排除一些TryUpdateModel字段验证 [英] Asp.net MVC 3 Validation exclude some field validation in TryUpdateModel

问题描述

我使用ASP.NET MVC剃刀和数据注解验证
我的模型：

I am using ASP.NET MVC Razor And Data Annotation validators My model:

public class Person 
{ 
    public int id { get; set; } 

    [Required] 
    public string FirstName { get; set; } 

    [Required] 
    public string LastName { get; set; } 
} 

名字和姓氏是Requerd。
我想编辑名字。我是了Methode：

FirstName And LastName are Requerd. I want to Edit FirstName. My Methode is:

public ActionResult Edit([Bind(Include = "FirstName")]Person person)
{
    var p = GetPerson();
    if (TryUpdateModel(p))
    {
        //Save Changes;
    }
}

但TryUpdateModel总是返回false。因为姓氏是无效的。

But TryUpdateModel always return false. because LastName is Invalid.

我如何prevent检查验证姓氏在TryUpdateModel？

How Can I Prevent check Validation Of LastName in TryUpdateModel?

请注意：

• 的code简化。我真正的code是非常复杂的


• 我必须使用Requierd两个属性


• 我不希望使用不同的模型类

推荐答案

我找到很好的解决方案。我必须从ModelState中删除未使用的字段。然后ModelState.IsValid返回true。首先我需要创建新的属性类：

I found Nice Solution. I must remove unused Field from ModelState. then ModelState.IsValid return true. first I need Create New Attribute class:

public class ValidateOnlyIncomingValuesAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var modelState = filterContext.Controller.ViewData.ModelState;
        var valueProvider = filterContext.Controller.ValueProvider;

        var keysWithNoIncomingValue = modelState.Keys.Where( x=>!valueProvider.ContainsPrefix(x) );
        foreach (var key in keysWithNoIncomingValue)
            modelState[key].Errors.Clear();
    }
}

然后我添加属性我梅索德：

then I Add Attribute on my methode:

[ValidateOnlyIncomingValuesAttribute]
public ActionResult Edit([Bind(Include = "FirstName")]Person person)
{
    var p = GetPerson();
    if (ModelState.IsValid)
    {
        TryUpdateModel(p);
        //Save Changes;
    }
}

看看这个：<一href=\"http://blog.stevensanderson.com/2010/02/19/partial-validation-in-aspnet-mvc-2/\">http://blog.stevensanderson.com/2010/02/19/partial-validation-in-aspnet-mvc-2/

这篇关于Asp.net MVC 3验证排除一些TryUpdateModel字段验证的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！