CODEWITHSUNDEEP
c#relative-pathabsolute-path
Anders
Anders

Reputation: 12716

Relative path to absolute path in C#?

I have xml files that contain href file paths to images (e.g. "....\images\image.jpg"). The hrefs contain relative paths. Now, I need to extract the hrefs to the images and turn them into absolute paths in the file system.

I know about the GetFullPath method, but I tried it and it only seems to work from the CurrentDirectory set, which appears to be C: so I don't see how I could use that. And still, I have the absolute path of the file containing the hrefs, and the href relative paths, so since it is a simple task for me to count back the number of "....\" parts based on the absolute path of the containing file, it seems there must be a way to do this programmatically as well.

I'm hoping there's some simple method I just don't know about! Any ideas?

Upvotes: 118

Views: 187178

Answers (8)

MiMFa
MiMFa

Reputation: 1164

It's the best way to convert the Relative path to the Absolute one!

string absolutePath = System.IO.Path.GetFullPath(relativePath);

Upvotes: 17

Jonny Boy
Jonny Boy

Reputation: 312

This worked for me.

//used in an ASP.NET MVC app
private const string BatchFilePath = "/MyBatchFileDirectory/Mybatchfiles.bat"; 
var batchFile = HttpContext.Current.Server.MapPath(BatchFilePath);

Upvotes: 1

Tianzhen Lin
Tianzhen Lin

Reputation: 2614

Have you tried Server.MapPath method. Here is an example

string relative_path = "/Content/img/Upload/Reports/59/44A0446_59-1.jpg";
string absolute_path = Server.MapPath(relative_path);
//will be c:\users\.....\Content\img\Upload\Reports\59\44A0446_59-1.jpg

Upvotes: 6

cahit beyaz
cahit beyaz

Reputation: 5117

string exactPath = Path.GetFullPath(yourRelativePath);

works

Upvotes: 185

David Crowell
David Crowell

Reputation: 3813

This worked.

var s = Path.Combine(@"C:\some\location", @"..\other\file.txt");
s = Path.GetFullPath(s);

Upvotes: 36

Paolo
Paolo

Reputation: 22638

Assuming you know the real directory the XML file lives in use Path.Combine, e.g.

var absolute_path = Path.Combine(directoryXmlLivesIn, "..\images\image.jpg");

If you want to get back the full path with any ..'s collapsed then you can use:

Path.GetFullPath((new Uri(absolute_path)).LocalPath);

Upvotes: 119

JeremyWeir
JeremyWeir

Reputation: 24368

Take a look at Path.Combine http://msdn.microsoft.com/en-us/library/fyy7a5kt.aspx

Upvotes: 0

Reed Copsey
Reed Copsey

Reputation: 564323

You can use Path.Combine with the "base" path, then GetFullPath on the results.

string absPathContainingHrefs = GetAbsolutePath(); // Get the "base" path
string fullPath = Path.Combine(absPathContainingHrefs, @"..\..\images\image.jpg");
fullPath = Path.GetFullPath(fullPath);  // Will turn the above into a proper abs path

Upvotes: 8

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