该组件显示由一个动作设置的值组成的表。

This component displays a table of values set by an action.

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如果给出的表名为NULL，则该过程不执行任何动作。

The procedure does not perform any action if the given table name is NULL.

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有一些技术用来避免UI线程中的长时间运行动作，举一个常见的例子：使用某种数据库查询、网络调用或磁盘进行填充的表或树。

Here are some techniques for avoiding long-running actions in the UI thread, using a common example: a table or tree that is filled from some sort of database query, network call, or disk.

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