How to reuse HTML snippets in asp.net core razor page?

Question

I try to reuse HTML snippets in my razor page (view component) but somehow it never call or hit the break in the html section.

I'm using Asp.net core 2.2

        @{
        Func<CategorySimpleModel, Microsoft.AspNetCore.Html.IHtmlContent> DisplayManufacturerPicture=
            @<div class="col-sm-4">
                <div class="row">
                    @foreach (var m in item.Manufacturers)
                    {
                        <div class="col-md-6 col-sm-12">
                            blah blah
                        </div>
                    }
                </div>
            </div>;
        }

   @foreach (var root in Model.Categories)
            { 
               DisplayManufacturerPicture (root);
            }

"but somehow it never call or hit the break in the html section" What exactly do you mean? Did you place a breakpoint inside the Func and it's not getting hit? — MindSwipe
– MindSwipe, Commented Mar 19, 2019 at 10:29
yes it never hits and I've even tried with a simple string func<string, IHtmlContent>. strangely it never shows anything though for loop does hit DisplayManufacturerPicture — nam vo
– nam vo, Commented Mar 19, 2019 at 10:35

nam vo · Accepted Answer · 2019-03-19 13:45:52Z

2

somehow it only works with @ though the method call is inside the server side syntax

 @if (root.Manufacturers.Count > 0)
{
   @DisplayManufacturerPicture(root);
}

answered Mar 19, 2019 at 13:45

nam vo

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Comments

poke · Accepted Answer · 2019-03-19 11:54:16Z

1

What you are trying to do is not (yet) possible. You should take a look at partial views instead:

@foreach (var root in Model.Categories)
{
    <partial name="_DisplayManufacturerPicture" model="root" />
}

And then inside _DisplayManufacturerPicture.cshtml:

@model CategorySimpleModel

<div class="col-sm-4">
    <div class="row">
        @foreach (var m in item.Manufacturers)
        {
            <div class="col-md-6 col-sm-12">
                blah blah
            </div>
        }
    </div>
</div>

answered Mar 19, 2019 at 11:54

poke

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2 Comments

nam vo Over a year ago

yes I do use a lot of partial view, what I'm trying to do is the way to replace legacy @helper from old asp.net. You may see dotnetthoughts.net/how-to-reuse-html-snippets-in-cshtml-view or stackoverflow.com/questions/32331157/…

poke Over a year ago

Partial views are not legacy and also note that I am not using the HtmlHelper either. And none of this is “old ASP.NET”.

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