该元素是基于绑定列的数据类型选择的。

The element is chosen based on the data type of the bound column.

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XML文档被分解，每个绑定列(题目、出版社、名、姓)被转换为数据库代码页。

The XML document is shredded, and each bound-out column (title, publisher, firstname, lastname) is converted to the database code page.

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当处于绑定模式时，为了能够在按绑定列对控件进行排序时保留未绑定列的值，此模式是必需的。

This is necessary to maintain the values of unbound columns in bound mode when the control is sorted by bound columns.

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