using (SqlConnection cnn = new  SqlConnection( connStr  ))
	{
		cnn.Open();
		string sql="select name,id from customers";
		SqlCommand cmd = cnn.CreateCommand();
		cmd.CommandText = sql;
				
		SqlDataReader rs =   cmd.ExecuteReader();
		while( rs.Read()){
		CheckBoxOperators.Items.Add( new ListItem( rs["name"].ToString() , rs["id"].ToString())  );
		}
	}

 

CheckBoxOperators.Items[ 0 ].Value );
CheckBoxOperators.Items[ 0 ].Selected ;