CODEWITHSUNDEEP
c#asp.netvisual-studio-2015path
MuffinMan
MuffinMan

Reputation: 65

How to locate relative file path when using GetFiles() in C#?

I've found a few related questions but they're not working that well. The image name is a modified GUID like 3c6b4a9b-8e88-4c8e-93da-258acd2c964f_0 but the extension isn't known (.jpg, .gif, ..etc). The GUID will be coming from a gridview so it's not a static string. Below is what I have but I'm having a difficult time getting the path to work correctly.

    string fileName = `3c6b4a9b-8e88-4c8e-93da-258acd2c964f`;
    DirectoryInfo filePath = new DirectoryInfo(@"/Images");
    MessageBox.Show(filePath.ToString());
    FileInfo[] fileArray = filePath.GetFiles(fileName + "_0.*");

Keep getting issues with the directory being invalid. Currently the files are stored on my c: drive.

How can I get the relative path without hardcoding it in? I was using DirectoryInfo(Server.MapPath("Images")); which worked temporarily then started giving this error System.ArgumentException: Second path fragment must not be a drive or UNC name. which seems to be from the path having the drive "C:" This doesn't seem to be a permanent solution once the site is launched though.

The actual path is C:\Website\Name\Images\3c6b4a9b-8e88-4c8e-93da-258acd2c964f_0.jpg

Thanks!

Upvotes: 0

Views: 599

Answers (2)

Steve Padmore
Steve Padmore

Reputation: 1740

The problem is that you are getting DirectoryInfo for "C:\Images".

You want to use Server.MapPath to get the physical path to the folder that is in your website (which could be anywhere on any drive).

Using the ~ means to start from the root of the running website.

So this should do the trick:

string fileName = `3c6b4a9b-8e88-4c8e-93da-258acd2c964f`;
DirectoryInfo filePath = new DirectoryInfo(Server.MapPath("~/Images"));
FileInfo[] fileArray = filePath.GetFiles(fileName + "_0.*");

Upvotes: 1

lazarus
lazarus

Reputation: 383

You've used filePath as the first parameter to GetFiles, just use the wildcard and invoke the overload of GetFiles with one parameter.

filePath.GetFiles("_0.*");

Upvotes: 1

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