How to detect an empty CRecordset object in Visual C++ (121950)
The information in this article applies to:
- The Microsoft Foundation Classes (MFC), when used with:
- Microsoft Visual C++ 1.51
- Microsoft Visual C++, 32-bit Enterprise Edition 4.2
- Microsoft Visual C++, 32-bit Enterprise Edition 5.0
- Microsoft Visual C++, 32-bit Enterprise Edition 6.0
- Microsoft Visual C++, 32-bit Professional Edition 4.0
- Microsoft Visual C++, 32-bit Professional Edition 4.1
- Microsoft Visual C++, 32-bit Professional Edition 4.2
- Microsoft Visual C++, 32-bit Professional Edition 5.0
- Microsoft Visual C++, 32-bit Professional Edition 6.0
- Microsoft Visual C++, 32-bit Learning Edition 4.0
- Microsoft Visual C++, 32-bit Learning Edition 4.2
- Microsoft Visual C++, 32-bit Learning Edition 6.0
- Microsoft Visual C++ .NET (2002)
- Microsoft Visual C++ .NET (2003)
- Microsoft Visual C++ 2005 Express Edition
This article was previously published under Q121950 Note Microsoft Visual C++ .NET (2002) supports both the managed code
model that is provided by the Microsoft .NET Framework and the unmanaged native
Microsoft Windows code model. The information in this article applies only to
unmanaged Visual C++ code.
Note Microsoft Visual C++ .NET 2005 supports both the managed code
model that is provided by the .NET Framework and the unmanaged native
Windows code model. SUMMARY The CRecordset represents a set of records obtained from a
data source through a query. If no records from the data source match the
query, there will be no records in the record set object so CRecordset::IsEOF
and CRecordset::IsBOF both return a nonzero value. A query is executed during
calls to CRecordset::Open and CRecordset::Requery, so empty record sets can be
detected calling CRecordset::IsEOF and/or CRecordset::IsBOF after executing a
query. REFERENCES This behavior is described in the documentation for
CRecordset::IsEOF and CRecordset::IsBOF.
| Modification Type: | Major | Last Reviewed: | 12/9/2005 |
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| Keywords: | kbDatabase kbhowto KB121950 kbAudDeveloper |
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