Error in System.IO.Directory.GetFiles?

[Mobile Boy]

Hello group,



When using "*.doc" as searchpattern, Getfiles is filling the enumerator with
doc-files but also incorrectly with docx files.
Try this little piece of code to reproduce this issue.
Why does "*.doc" ends in a list of both, doc-files and docx-files?



Dim En As IEnumerator

Dim FoundFile As String

En = System.IO.Directory.GetFiles(_Directory, "*.doc").GetEnumerator()

While En.MoveNext

FoundFile = System.Convert.ToString(En.Current.ToString)



End While





Best regards,

Mobile boy

 

[Tom Shelton]

Mobile Boy wrote on 1/9/2013 :

Hello group,



When using "*.doc" as searchpattern, Getfiles is filling the
enumerator with doc-files but also incorrectly with docx files.
Try this little piece of code to reproduce this issue.
Why does "*.doc" ends in a list of both, doc-files and docx-files?



Dim En As IEnumerator

Dim FoundFile As String

En = System.IO.Directory.GetFiles(_Directory,
"*.doc").GetEnumerator()

While En.MoveNext

FoundFile = System.Convert.ToString(En.Current.ToString)



End While





Best regards,

Mobile boy

Read the documentation -
http://msdn.microsoft.com/en-US/library/wz42302f(v=vs.110).aspx

In the notes:

<quote>
A searchPattern with a file extension of exactly three characters
returns files having an extension of three or more characters, where
the first three characters match the file extension specified in the
searchPattern.
</quote>

In other words, it's by design.

 

[Mobile Boy]

OK, Thank you Tom for your answer.
So you have to build in an extra check to see wetherthe extension is doc or
docx. Good to know!

Thanks.