充分利用了ADODC的功能，利用工程部件中的ADODC，他的作用和data控件的相同，但他更高级，比前者更方便。而且，他比ADO对象编程更直观，更简洁易懂-ADODC full advantage of the functions of engineering components used in the ADODC, his role and control of the same data, but more advanced, more convenient than the former. Moreover, he is more intuitive than the ADO object programming, more concise easy to understand