ASP.NET MVC razor: conditional attribute in CSS block

Question

Can I use if condition in style tag like this?

<style>
    @@media (min-width: 765px) {
    html,body 
       {
        min-width: auto;
        width: 100%;
        @{
            if (ViewBag.type == "pic")
            {
                @:min-height:100vh;
                @:height:auto;
            }
            else {
                @:height: 100vh;
            }
          }
       }
    }
</style>

Or I should use CSS directly in HTML?

why you want condition in css you can try to apply on html tags stackoverflow.com/questions/11785166/… — Saineshwar Bageri - MVP
– Saineshwar Bageri - MVP, Commented Nov 15, 2017 at 3:18
This CSS is for mobile device.Maybe I should write in difference file then dynamic load it. — Yich Lin
– Yich Lin, Commented Nov 15, 2017 at 3:24

Mario Lopez · Accepted Answer · 2017-11-15 04:59:03Z

2

You should put your css in css files and target specific classes instead of loading files conditionally. Then you can use Razor to include conditional classes on your tags. Something like:

@{
    var imgType = ViewBag.type == "mobile"?"for-mobile":"for-desktop";
}

<img class="@imgType" src="..."/>

Then in your CSS file:

.for-mobile{
      min-height:100vh;
      height:auto;
}

.for-desktop{
     height: 100vh;
}

answered Nov 15, 2017 at 4:59

Mario Lopez

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