protected void lpg_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "ItemCollect")
{
GridViewRow gvr = (GridViewRow)(((LinkButton)(e.CommandSource)).NamingContainer);
LinkButton lk = lpgKnowledgeExchange.Rows[gvr.RowIndex].FindControl("lbtnCollect") as LinkButton;
}
}