how to get html value into c# page

Question

 

 My code as follows

 

<div class="dropdownparent"  style="float: left; width: 250px; height: 25px;">

<select id="ms"  runat="server" multiple="mutiple" 

style="float: left; width: 250px;" class="ms" title="Select Project">

</select>

 

i have to pass the above id  ms into code behind page.

 

 

for that how can i do in asp.net using C#