如何使字符串类型的模型属性在ASP.NET MVC复选框 [英] How to render a model property of string type as checkbox in ASP.NET MVC

问题描述

我要显示一个字符串类型作为MVC视图复选框，但返回它作为HTTP发布字符串类型。的问题是，它返回对HTTP POST错误的。下面是我的code：

I want to display a string type as checkbox on MVC view, but returns it as string type on HTTP post. The problem is that it returns false on HTTP Post. Below is my code:

查看：

  @model List<Car>

        foreach(var car in Model){
       bool isFourWheel = false;
        if(bool.TryParse(car.IsFourWheel, out isFourWheel){
        @Html.CheckBox("IsFourWheel", isFourWheel); //need to be rendered as checkbox, but returns string type on HTTP POST
    }
     }

型号：

public class Car
    {
        public string IsFourWheel { get; set; } //bad naming, but it can contain any type, include boolean
    }

控制器：

 public ActionResult Index()
        {


            var cars = new List<Car>(){ new Car(){IsFourWheel = "true"},new Car(){IsFourWheel = "false"} };
            return View(cars);
        }

        [HttpPost]
        public ActionResult Index(List<Car> cars)  **Problem IsFourWheel is false when true is selected **
        {           
            return View(cars);
        }

任何理想的情况是非常多的AP preciated。

Any ideal would be very much appreciated.

推荐答案

您可以尝试在你的助手指定一个模板名称：

You can try specifying a template name in your helper:

@Html.EditorFor(car => car.IsFourWheel, "CheckBox")

和定义模板来呈现数据你想要的方式，在任何〜/查看/ {} YourControllerName /EditorTemplates/CheckBox.cshtml 或〜/查看/共享/ EditorTemplates / CheckBox.cshtml 。

And defining the template to render the data the way you want, in either ~/Views/{YourControllerName}/EditorTemplates/CheckBox.cshtml or ~/Views/Shared/EditorTemplates/CheckBox.cshtml.

您可以在这里找到MVC的模板全系列后由布拉德·威尔逊：

You can find a whole series of post by Brad Wilson on MVC templates here:

布拉德·威尔逊：ASP .NET MVC 2模板，第1部分：介绍

这是MVC 2，但大多数概念仍然适用于MVC 3，以及（除剃刀语法）。

It is for MVC 2, but most concepts still apply to MVC 3 as well (save for the Razor syntax).

更新：

其实你可能不需要这个自定义模板。尝试使用 @ Html.CheckBoxFor（车= GT; car.IsFourWheel）。而不是

Actually you probably don't need a custom template for this. Try using @Html.CheckBoxFor(car => car.IsFourWheel) instead.

更新2：

下降〜/查看/共享/ EditorTemplates 下面的模板：

IsFourWheel.cshtml

@functions {
    private bool IsChecked() {
        if (ViewData.Model == null) return false;
        return Convert.ToBoolean(ViewData.Model, System.Globalization.CultureInfo.InvariantCulture);
    }
}

@Html.CheckBox("", IsChecked(), new { @class = "check-box" })

然后从你的观点，把它像这样：

Then from your view, call it like so:

@Html.EditorFor(model => model.IsFourWheel, "IsFourWheel")

我测试了它，并结合工程GET和POST场景。

I tested it and binding works in both GET and POST scenarios.

这篇关于如何使字符串类型的模型属性在ASP.NET MVC复选框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！