PRB: The FileInfo.CopyTo Method May Raise a System.IO.IOException Error If the Same File Exists (327267)
The information in this article applies to:
- Microsoft .NET Framework Class Libraries 1.0
- Microsoft .NET Framework Class Libraries 1.1
This article was previously published under Q327267 SYMPTOMS If you try to create or copy a file whose name is in the
short (8.3) format (8 characters, a dot, and then a 3-character extension), the
attempt may not succeed and you may receive an error that indicates that the
file already exists. If the System.IO.FileInfo.CopyTo method is used to copy the file, you receive the following error
message: System.IO.IOException: The file "xxxxxxxx.xxx"
already exists. CAUSE For every long file name, the system automatically
generates a short (8.3) file name so that 16-bit and DOS applications can also
access the file. The error mentioned in "Symptoms" occurs when one of the
auto-generated short names matches the name of the file that is being created
or copied. To verify this from a command prompt, change to the appropriate
directory, and then run the dir /X command. RESOLUTION To work around this problem, select a different name for
the file that is being created or copied. STATUSThis
behavior is by design.
| Modification Type: | Minor | Last Reviewed: | 11/17/2003 |
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| Keywords: | kbFileIO kbKernBase kbpending kbprb KB327267 kbAudDeveloper |
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