How to Get the Tick Mark in Check Box for Checked Items in the Screen

   HtmlStr.AppendFormat("<td><input type='checkbox' id='cblbind' runat='server'  name='cblbind' value=""{0}""/>{1}</td>", dr("UserID"), dr("Nickname"))
This is my Dynamic Checkbox, how to select the checkbox based on the Value? if the Checke box is checked means i need Tick mark in the Check box on the screen?
i tried but not get required output?.. thanks in advance..