Check out example codes for "asp net mvc 5 add logo to navbar". It will help you in understanding the concepts better.

Code Example 1

<a href="@Url.Action("Index", "Home")" class="navbar-brand">
    <img src="img/accomodator-mini.png" title="title" alt="additional title" />
</a>
<!--
Note: I'd add style="margin: 0px 0px" after the class, 
because navbard-brand has a 15px margin that would
lead the image to be rendered moved downwards.
-->

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