@Html.DisplayFor 的 MVC6 替代品 [英] MVC6 alternative to @Html.DisplayFor

问题描述

MVC6 引入了 Tag Helper，与使用 @Html.EditorFor 等相比，这是一种更好的方法.但是我还没有找到任何可以替代 @Html.DisplayFor 的 Tag Helper.

MVC6 introduces Tag Helpers which is a better way compared to using @Html.EditorFor, etc. However I have not found any Tag Helper that would be an alternative to @Html.DisplayFor.

当然，我可以直接在 Razor 页面上使用变量，例如 @Model.BookingCode.但这不允许控制格式.

Of course I can use a variable directly on a Razor page, such as @Model.BookingCode. But this does not allow to control formatting.

对于 MVC6，显示模型属性值的概念正确方法是什么?

With MVC6, what's conceptually correct way for displaying a value of a model property?

推荐答案

您可以创建自己的标签助手

You can create your own tag helper

namespace MyDemo.TagHelpers
{
    [HtmlTargetElement("p", Attributes = ForAttributeName)]
    public class DisplayForTagHelper : TagHelper
    {
        private const string ForAttributeName = "asp-for";

        [HtmlAttributeName(ForAttributeName)]
        public ModelExpression For { get; set; }

        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
            if (context == null)
            {
                throw new ArgumentNullException(nameof(context));
            }

            if (output == null)
            {
                throw new ArgumentNullException(nameof(output));
            }

            var text = For.ModelExplorer.GetSimpleDisplayText();

            output.Content.SetContent(text);
        }
    }
}

在视图中添加使用它:

<p asp-for="MyProperty" class="form-control-static"></p>

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