"This behavior occurs because the primary key or the" not NULL "column of the database table was not selected in the data Form Wizard."

此行为的发生是由于在“数据窗体向导”中未选择数据库表的主键或“非null”列。

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You can then use your formatted and typed dataset in your application development, including the ability to generate data forms using the data form wizard.

然后，您可以在应用程序开发中使用格式化和类型化的数据集，包括可以使用数据窗体向导生成数据窗体。

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To work around this problem, select the following columns of the selected table when you add a data form by using the Data Form Wizard: the primary column and a column that does not permit NULLs.

若要解决此问题，请在添加数据窗体时通过使用“数据窗体向导”选择所选表中的以下列：主列和不允许 NULL 的列。

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