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OleDbDataReader

OleDbDataReader

此时就可以利用数据阅读器（OleDbDataReader）对象来显示数据，该对象只可以显示数据，不可以更新和删除，相对来说可 …

The following example creates instances of three derived classes OleDbConnection, an OleDbCommand, and an OleDbDataReader.

However , you must close the OleDbDataReader before you can execute a new or previous command .

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