Recordset.count返回-1值 [英] Recordset.count returns -1 value

问题描述

亲爱的朋友，

在一次采访中，他们问了我一个问题.
如果Recordset.count返回-1值，那么它意味着什么.
我不知道答案.请给我一个解决方案.

Dear Friends,

In a interview, they have asked me a question.
If Recordset.count returns -1 value then what it means.
I dont know the answer for this. Kindly any one provide me a solution.

推荐答案

Recordset.RecordCount属性(ADO)

Recordset.RecordCount property (ADO)

RecordCount属性对于仅向前的游标将返回-1；静态或键集游标的实际计数；以及动态游标的-1或实际计数，具体取决于数据源.

The RecordCount property will return -1 for a forward-only cursor; the actual count for a static or keyset cursor; and either -1 or the actual count for a dynamic cursor, depending on the data source.

更多信息:
http://msdn.microsoft.com/zh-我们/library/windows/desktop/ms676701%28v=vs.85%29.aspx [ http://msdn.microsoft.com/en-us/library/office/ff821452.aspx [^ ]

More at:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms676701%28v=vs.85%29.aspx[^]
http://msdn.microsoft.com/en-us/library/office/ff821452.aspx[^]

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