your link button end tag is missed:
<asp:linkbutton id="LinkButton1" runat="Server" commandname="Select" >
<%#Eval("Subject")%>
and if you call your bind method from repeter Item command or any other repeter event then one post back needed to bind it.
ScriptManager.RegisterStartupScript(this, this.GetType(), "Postback", "postback();", true);
javascript:
postback()
{
_dopostback('LinkButton1','');
}