使用Mvc Core，你可以创建一个整洁的TagHelper脚本，如下所示。这可以很容易地转换成一个节标记，在这里您也可以给它一个名称(或者名称取自派生类型)。注意，需要为IHttpContextAccessor设置依赖注入。

当添加脚本时(例如在部分中)

<scripts>
    <script type="text/javascript">
        //anything here
    </script>
</scripts>

当输出脚本时(例如在一个布局文件中)

<scripts render="true"></scripts>

Code

public class ScriptsTagHelper : TagHelper
    {
        private static readonly object ITEMSKEY = new Object();

        private IDictionary<object, object> _items => _httpContextAccessor?.HttpContext?.Items;

        private IHttpContextAccessor _httpContextAccessor;

        public ScriptsTagHelper(IHttpContextAccessor httpContextAccessor)
        {
            _httpContextAccessor = httpContextAccessor;
        }

        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
        {
            var attribute = (TagHelperAttribute)null;
            context.AllAttributes.TryGetAttribute("render",out attribute);

            var render = false;

            if(attribute != null)
            {
                render = Convert.ToBoolean(attribute.Value.ToString());
            }

            if (render)
            {
                if (_items.ContainsKey(ITEMSKEY))
                {
                    var scripts = _items[ITEMSKEY] as List<HtmlString>;

                    var content = String.Concat(scripts);

                    output.Content.SetHtmlContent(content);
                }
            }
            else
            {
                List<HtmlString> list = null;

                if (!_items.ContainsKey(ITEMSKEY))
                {
                    list = new List<HtmlString>();
                    _items[ITEMSKEY] = list;
                }

                list = _items[ITEMSKEY] as List<HtmlString>;

                var content = await output.GetChildContentAsync();

                list.Add(new HtmlString(content.GetContent()));
            }
        }
    }

使用Mvc Core，你可以创建一个整洁的TagHelper脚本，如下所示。这可以很容易地转换成一个节标记，在这里您也可以给它一个名称(或者名称取自派生类型)。注意，需要为IHttpContextAccessor设置依赖注入。

当添加脚本时(例如在部分中)

<scripts>
    <script type="text/javascript">
        //anything here
    </script>
</scripts>

当输出脚本时(例如在一个布局文件中)

<scripts render="true"></scripts>

Code

public class ScriptsTagHelper : TagHelper
    {
        private static readonly object ITEMSKEY = new Object();

        private IDictionary<object, object> _items => _httpContextAccessor?.HttpContext?.Items;

        private IHttpContextAccessor _httpContextAccessor;

        public ScriptsTagHelper(IHttpContextAccessor httpContextAccessor)
        {
            _httpContextAccessor = httpContextAccessor;
        }

        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
        {
            var attribute = (TagHelperAttribute)null;
            context.AllAttributes.TryGetAttribute("render",out attribute);

            var render = false;

            if(attribute != null)
            {
                render = Convert.ToBoolean(attribute.Value.ToString());
            }

            if (render)
            {
                if (_items.ContainsKey(ITEMSKEY))
                {
                    var scripts = _items[ITEMSKEY] as List<HtmlString>;

                    var content = String.Concat(scripts);

                    output.Content.SetHtmlContent(content);
                }
            }
            else
            {
                List<HtmlString> list = null;

                if (!_items.ContainsKey(ITEMSKEY))
                {
                    list = new List<HtmlString>();
                    _items[ITEMSKEY] = list;
                }

                list = _items[ITEMSKEY] as List<HtmlString>;

                var content = await output.GetChildContentAsync();

                list.Add(new HtmlString(content.GetContent()));
            }
        }
    }

我能想到的第一个解决方案是使用ViewBag来存储必须呈现的值。

我从来没有试过，如果这个工作从一个局部的观点，但它应该在我看来。

普路托的想法比较好:

CustomWebViewPage.cs:

    public abstract class CustomWebViewPage<TModel> : WebViewPage<TModel> {

    public IHtmlString PartialWithScripts(string partialViewName, object model) {
        return Html.Partial(partialViewName: partialViewName, model: model, viewData: new ViewDataDictionary { ["view"] = this, ["html"] = Html });
    }

    public void RenderScriptsInBasePage(HelperResult scripts) {
        var parentView = ViewBag.view as WebPageBase;
        var parentHtml = ViewBag.html as HtmlHelper;
        parentView.DefineSection("scripts", () => {
            parentHtml.ViewContext.Writer.Write(scripts.ToHtmlString());
        });
    }
}

观点\ web . config:

<pages pageBaseType="Web.Helpers.CustomWebViewPage">

观点:

@PartialWithScripts("_BackendSearchForm")

部分(_BackendSearchForm.cshtml):

@{ RenderScriptsInBasePage(scripts()); }

@helper scripts() {
<script>
    //code will be rendered in a "scripts" section of the Layout page
</script>
}

布局页面:

@RenderSection("scripts", required: false)

我的解决方案是从布局页面加载脚本。然后在javacript中，检查局部视图中是否存在一个元素。如果元素存在，javascript就知道该部分已被包含。

$(document).ready(function () {
    var joinButton = $("#join");
    if (joinButton.length != 0) {
        // the partial is present
        // execute the relevant code
    }
});

我解决这个完全不同的路线(因为我很着急，不想实现一个新的HtmlHelper):

我用一个大的if-else语句包装了我的Partial View:

@if ((bool)ViewData["ShouldRenderScripts"] == true){
// Scripts
}else{
// Html
}

然后，我用自定义ViewData调用了两次Partial:

@Html.Partial("MyPartialView", Model, 
    new ViewDataDictionary { { "ShouldRenderScripts", false } })

@section scripts{
    @Html.Partial("MyPartialView", Model, 
        new ViewDataDictionary { { "ShouldRenderScripts", true } })
}