how to to generate dynamic unorderd list img tag using c#

I want to e unorderd list img tag using c#

like this and i don't want to use repeater like this

<div id="xyz"> 

<ul> 

<li><img id="1" src="" alt=""/></li>

 <li><img id="2" src="" alt=""/>

</li> <li><img id="3" src="" alt=""/>

</li> <li><img id="4" src="" alt=""/>

</li> <li><img id="5" src="" alt=""/></li> 

</ul> </div>

 how can i do this