Getting Original Path from FileStream

Question

Given a System.IO.FileStream object, how can I get the original path to the file it's providing access to?

For example, in the MyStreamHandler() function below, I want to get back the path of the file that created the FileStream:

public static void Main() 
{
    string path = @"c:\temp\MyTest.txt";
    FileStream fs = File.Create(path));

    MyStreamHandler(fs);
    MyOtherStreamHandler(fs);

    fs.Close();
    fs.Dispose();
}

private static void MyStreamHandler(FileStream fs)
{
    // Get the originating path of 'fs'
} 

private static void MyOtherStreamHandler(FileStream fs)
{
}

Yuriy Faktorovich · Accepted Answer · 2018-02-21T18:09:12.130

86

The FileStream's Name property.

See documentation in MSDN

edited Feb 21 '18 at 18:09

answered Jul 22 '09 at 14:27

Yuriy Faktorovich

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10

Thanks for answering what was apparently an RTFM-type question. I did actually, but it wasn't obvious to me that Name got the path. – Jul 22 '09 at 14:35
2

I hate to say it, but why read the manual when you have StackOverflow? It's sooo much faster to find, with examples by people that use the technology. – Adrian Carr Feb 19 '16 at 03:52
2

@AdrianCarr because the manual has example whilst the answer not – Hi-Angel Apr 14 '16 at 14:50
FYI: If the absolute path is not known, this property returns a string similar to "[Unknown]". It's the case when FileStream was instantiated using SafeFileHandle. – Andrei Orlov Mar 05 '20 at 22:14

score 6 · Answer 2 · answered Jul 22 '09 at 14:28

6

You can use fs.Name to get the path.

answered Jul 22 '09 at 14:28

cakeforcerberus

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score 1 · Answer 3 · answered Jul 07 '20 at 10:42

1

Use FileInfo-Class for getting the path.

var fileStream = File.OpenRead(fileName);
var fileInfo = new FileInfo(fileName);

Settings.Default.ThePath = fileInfo.DirectoryName;
Settings.Default.Save();

answered Jul 07 '20 at 10:42

AsH

11
2

Getting Original Path from FileStream

3 Answers3