The Weird and The Wonderful

public class IDataAccesslayer
{
    private static SqlConnection conn = new SqlConnection(WebConfigurationManager.ConnectionStrings["connStr"].ToString());

    public IDataAccesslayer()
    {
        //
        // TODO: Add constructor logic here
        //
    }

    public static void ExecuteNoReturn(String spName, List<SqlParameter> parms)
    {
        try
        {
            conn.Open();

            SqlCommand cmd = new SqlCommand(spName, conn);
            cmd.CommandType = CommandType.StoredProcedure;

            foreach (SqlParameter parm in parms)
            {
                cmd.Parameters.Add(parm);
            }

            cmd.ExecuteNonQuery();
        }
        catch (Exception ex)
        {
            throw (ex);
        }
        finally
        {
            if (conn.State == ConnectionState.Open)
                conn.Close();
        }
    }
    public static DataSet ExecuteReturnDataSet(String spName, List<SqlParameter> parms)
    {
        //this was same as previous, except using a data-adapter
    }
}

protected void Page_Load(object sender, EventArgs e)
{
	IterateParentsForLoginId( Parent );
}

private void IterateParentsForLoginId(Control parent)
{
	if (typeof( Page ).IsAssignableFrom( parent.GetType() ))
	{
		_loggedInId = ((Page)parent).LoggedInId;
	}
	else
	{
		if (parent.Parent != null)
			IterateParentsForLoginId( parent.Parent );
		else
			throw new InvalidOperationException(
				"To ensure proper page functioning, the containing page for this control must derive from OURNAMESPACE.Page." );
	}
}

public class StringUtils
{
   public bool IsNullOrEmpty(string s)
   {
      return string.IsNullOrEmpty(s);
   }
}