动态设置禁用HTML属性为TextBoxFor的HtmlHelper [英] Dynamically set the disabled html attribute for TextBoxFor HtmlHelper

问题描述

我想动态设置为禁用属性 TextBoxFor 的HtmlHelper

I'm trying to dynamically set the disabled attribute for the TextBoxFor HtmlHelper

@Html.TextBoxFor(model => model.Street, 
                 new
                 {
                    @class = "", 
                    disabled = (Model.StageID==(int)MyEnum.Sth) ? "disabled" : "" 
                 })

但即使有禁用=这是一样的禁用=禁用。如何解决这个？

but even if there is disabled="" it is the same as disabled="disabled". How to get around of this ?

推荐答案

我有同样的问题大约一个月前，我完成了通过使用它这个扩展方法

I have the same problem about month ago and I finished by using this extension method for it

public static class AttributesExtensions
{
    public static RouteValueDictionary DisabledIf(
        this object htmlAttributes, 
        bool disabled
    )
    {
        var attributes = new RouteValueDictionary(htmlAttributes);
        if (disabled)
        {
            attributes["disabled"] = "disabled";
        }
        return attributes;
    }
}

在这之后，你可以使用它像这样

And after that you can use it like this

@Html.TextBoxFor(
    model => model.Street, 
    new { @class = "" }.DisabledIf(Model.StageID==(int)MyEnum.Sth)
)

修改（后保罗的<一个href=\"http://stackoverflow.com/questions/10207534/dynamically-set-the-disabled-html-attribute-for-textboxfor-htmlhelper/10207597#comment35073920_10207597\">comment):

使用数据-XXX的 HTML属性可以使用的<一个构造函数被开采href=\"https://msdn.microsoft.com/en-us/library/system.web.routing.routevaluedictionary.aspx\">System.Web.Routing.RouteValueDictionary类，因为下划线将不会被自动转换为减号。

The using of data-xxx html attributes may be mined by using the constructor of the System.Web.Routing.RouteValueDictionary class, since underscores will not be automatically converted to minus sign.

使用方法<一个href=\"https://msdn.microsoft.com/en-us/library/system.web.mvc.htmlhelper.anonymousobjecttohtmlattributes.aspx\">System.Web.Mvc.HtmlHelper.AnonymousObjectToHtmlAttributes代替：将解决这个问题。

Use the method System.Web.Mvc.HtmlHelper.AnonymousObjectToHtmlAttributes instead: will solve this issue.

修订code （扩展方法仅机身）

var attributes = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);
if (disabled)
{
    attributes["disabled"] = "disabled";
}
return attributes;

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