OnFetchProgress事件在什么时候触发啊？

[leehq]

我试了ADOQuery和ADOTable都不行，高手救命啊！！！！！！

[leehq]

?

[tongki]

UP！

[HiMrXia]

异步取数据的过程中周期性触发

Description

Write an OnFetchProgress event handler to take specific action during an asynchronous data retrieval operation. The OnFetchProgress event fires periodically during the data retrieval to provide indications of its progress. Create a handler for this event to react to this periodic notification, such as providing the user with a visual indication of the progress of the data retrieval.

[leehq]

问题是如何实现异步提取数据？

[耙子]

TADOConnection 的ConnectionOptions 改为 coAsyncConnect

不过这个时候所有SQL语句都是立即返回行，是否完成你需要自己检查。