Question

@Html.RadioButtonFor(modelItem => item.CheckerApproved, true)
@Html.LabelFor(modelItem => item.CheckerApproved, "Accepted")
@Html.RadioButtonFor(modelItem => item.CheckerApproved, false)
@Html.LabelFor(modelItem => item.CheckerApproved, "Rejected")

我想要的是某种方式在用户未经过身份验证时将这些禁用或只读。

即。在以下时间启用：

HttpContext.Current.User.Identity.IsAuthenticated

有一种简单的方法吗？你会把它们放在某种面板上吗？对MVC不确定？

您是否会为每一行单独设置启用功能？

Answer 1

我想要的是某种方式使这些禁用或只读当用户未经过身份验证时。

自定义助手的优秀候选人：

using System;
using System.Linq.Expressions;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Html;

public static class RadioExtensions // LOL for this name
{ 
    // TODO: Pick a better name here than MyRadioButtonFor
    public static IHtmlString MyRadioButtonFor<TModel, TProperty>(
        this HtmlHelper<TModel> html,
        Expression<Func<TModel, TProperty>> ex,
        object value
    )
    {
        var isAuthenticated = html.ViewContext.HttpContext.User.Identity.IsAuthenticated;
        if (isAuthenticated)
        {
            return html.RadioButtonFor(ex, value);
        }
        // Remark: adapt with readonly if necessary,
        // note that there is a crucial difference between a readonly and disabled
        // element in HTML. Up to you to pick the desired behavior
        return html.RadioButtonFor(ex, value, new { @disabled = "disabled" });
    }
}

并且在您看来只是消耗了您的劳动成果：

@Html.MyRadioButtonFor(modelItem => item.CheckerApproved, true)
@Html.LabelFor(modelItem => item.CheckerApproved, "Accepted")
@Html.MyRadioButtonFor(modelItem => item.CheckerApproved, false)
@Html.LabelFor(modelItem => item.CheckerApproved, "Rejected")

未经过身份验证时，MVC单选按钮禁用只读

1 个答案: