public class Connect {
	SqlConnection con;
	public Connect() {
		con = new SqlConnection(Connection String);
		if(con.state == ConnectionState.Closed) con.open();
	}


	public DataTable doQuery(String query) {
		DataTable dt;
		SqlDataAdapter da = dt.execute(query, con);
		try {
			da.fill(dt);
		}catch(Execption E)
		{
			mbox E.getMessage();
			dt = null;
		}
		return dt;

	}
}