How do u convert a drive file path to url path?

If this has been for ASP.Net and vice-versa you could have used Server.MapPath but this way, I think you can brute-force it :)

string serverName = "localhost";
string filePath = "c:\\test\\file1.txt";
string result = string.Format("\\{0}\\{1}",
    serverName, filePath.Replace(":", "$"));

I think in case of url you have to replace : with $ too (if you want to use it with networks or so).

saeidx wrote:

I need to convert something like c:\\test\\file1.txt to url
\\localhost\\c:\\test\\file1.txt

I don't know, it looks impossible to me.

It depends on where this program will be run.
1. On the same computer as the file is located.
In this case your original string will work just fine.

2. On another computer that is on the same network as the computer with the file on it.
In this case you will need to do a few non-programming things to set up you system first.
First you will have to set up a 'shared' folder on the computer that has the file and make sure that whoever will need to access the file (whoever will be running the program) has access to the folder.
In this case I would suggest making 'test' your shared folder. Do not make 'C:' your shared folder or else you will regret it. When you make it a shared folder you will have to give it a name, 'Test'; seems fine.
After setting the properties of the folder you will need to figure out the name of the computer that the file is on.
For now we will just call it 'MyRig'. Once this is done, the file can be accessed with the following URL '\\MyRig\\Test\\file1.txt'
If you had named the share folder 'MyTestFiles' the path would be '\\MyRig\\MyTestFiles\\file1.txt', even though the actual folder name is 'test'.