Alternate File Streams or Alternate Data Streams

  • Thread starter Thread starter mcr
  • Start date Start date
M

mcr

Hi.


As some of you might know you can use alternate file streams in
windows.


read more here: http://www.robvanderwoude.com/index.html (Search for "NTFS
Alternate File Streams")


My problem is that I can not get this to work from C#. No mater what I
do I get a NotSupportedException.


I have been testing with three code snippets:


This requires that the file c:\test.txt exists.

XmlDocument newFile = new XmlDocument();
newFile.Load((@"c:\test.txt:st­ream2")
XmlNode root = newFile.DocumentElement;
-----
StreamWriter newFile = File.CreateText(@"c:\test.txt:­stream2");
newFile.WriteLine("Stream 2");
newFile.Close();
-----
string lines = "First line.\r\nSecond line.\r\nThird line.";
System.IO.StreamWriter newFile = new
System.IO.StreamWriter("c:\\te­st.txt:stream2");
newFile.WriteLine(lines);
newFile.Close();
-----


As I said, these three tests all gives me a NotSupportedException.


Ok I know that it is becaues of the colon ":" in the path string, but if you
do
this from windows using for example notepad it works fine.


First create a new file called c:\test.txt then:
notepad c:\test.txt:stream2
Write something and save. Now you have two files in one.


So its seems that some of the .NET classes dont accept the colon ":" in
the path syntax.


Does someone know a way around this? Maybe using some others funtions
or methods to to open the file. Or is it not supported by the framework it
self.

anyone know this?


Thanks, Martin
 
mcr said:
Hi.


As some of you might know you can use alternate file streams in
windows.


read more here: http://www.robvanderwoude.com/index.html (Search for
"NTFS Alternate File Streams")


My problem is that I can not get this to work from C#. No mater what I
do I get a NotSupportedException.
Click to expand...

Hm... I don't think that this particular NTFS feature is supported by
system.IO.

Cheers,
 
That seemd to do the trick.
Thanks for pointing me in the right direction.

Martin.
 
You must log in or register to reply here.

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

Streaming File From http 6
"Extended Properties" and "Alternate Data Streams" Incompatible with Offline Files??? 1
Unable to write data to the transport connection 3
Silverlight video doesn't work when file is streamed from handler 3
Forcing Download of File Appends HTML from Download Page to Downloaded File? 1
ASP.net/VB.net generating gibberish in file write. 1
replacing text data in a binary file 12
dirty submission of INI file access... 1

Back
Top