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无意间在google codesearch  上看到这样一段代码：
其中有个ExecuteReader方法，如下：
public DbDataReader ExecuteReader(string query,CommandType commandtype, ConnectionState connectionstate)
        {
            objSelectOrQueryCommand.CommandText = query;
            objSelectOrQueryCommand.CommandType = commandtype;
            DbDataReader reader=null;
            try
            {
                if (objConnection.State == System.Data.ConnectionState.Closed)
                {
                    objConnection.Open();
                }
                if (connectionstate == ConnectionState.CloseOnExit)
                {
                    reader = objSelectOrQueryCommand.ExecuteReader(CommandBehavior.CloseConnection);
                }
                else
        &nb

问题补充： {
reader = objSelectOrQueryCommand.ExecuteReader();
}

}
catch (Exception ex)
{
HandleExceptions(ex);
}
finally
{
objSelectOrQueryCommand.Parameters.Clear();
}

return reader;
}
HandleExceptions方法如下：（此异常处理中，如果LogErrors,HandleErrors为true的话，DataReader的连接不是就没有机会关闭了吗？会不会造成链接泄漏？？）

private void HandleExceptions(Exception ex)
{
string exMsg = ex.Message + Environment.NewLine + ex.StackTrace;
if (LogErrors)
{
WriteToLog(exMsg);
}
if (HandleErrors)
{
strLastError = exMsg;
}
else
{
throw ex;
}
}