Remove part of the full directory name?
I have a list of filename with full path which I need to remove the filename and part of the file path considering a filter list I have.
Path.GetDirectoryName(file)
Does part of the job but I was wondering if there is a simple way to filter the paths using .Net 2.0 to remove part of it.
For example:
if I have the path + filename
equal toC:\my documents\my folder\my other folder\filename.exe
and all I need is what is above my folder\
means I need to extract only my other folder
from i开发者_Go百科t.
UPDATE:
The filter list is a text box with folder names separated by a ,
so I just have partial names on it like the above example the filter here would be my folder
Current Solution based on Rob's code:
string relativeFolder = null;
string file = @"C:\foo\bar\magic\bar.txt";
string folder = Path.GetDirectoryName(file);
string[] paths = folder.Split(Path.DirectorySeparatorChar);
string[] filterArray = iFilter.Text.Split(',');
foreach (string filter in filterArray)
{
int startAfter = Array.IndexOf(paths, filter) + 1;
if (startAfter > 0)
{
relativeFolder = string.Join(Path.DirectorySeparatorChar.ToString(), paths, startAfter, paths.Length - startAfter);
break;
}
}
How about something like this:
private static string GetRightPartOfPath(string path, string startAfterPart)
{
// use the correct seperator for the environment
var pathParts = path.Split(Path.DirectorySeparatorChar);
// this assumes a case sensitive check. If you don't want this, you may want to loop through the pathParts looking
// for your "startAfterPath" with a StringComparison.OrdinalIgnoreCase check instead
int startAfter = Array.IndexOf(pathParts, startAfterPart);
if (startAfter == -1)
{
// path not found
return null;
}
// try and work out if last part was a directory - if not, drop the last part as we don't want the filename
var lastPartWasDirectory = pathParts[pathParts.Length - 1].EndsWith(Path.DirectorySeparatorChar.ToString());
return string.Join(
Path.DirectorySeparatorChar.ToString(),
pathParts, startAfter,
pathParts.Length - startAfter - (lastPartWasDirectory?0:1));
}
This method attempts to work out if the last part is a filename and drops it if it is.
Calling it with
GetRightPartOfPath(@"C:\my documents\my folder\my other folder\filename.exe", "my folder");
returns
my folder\my other folder
Calling it with
GetRightPartOfPath(@"C:\my documents\my folder\my other folder\", "my folder");
returns the same.
you could use this method to split the path by "\" sign (or "/" in Unix environments). After this you get an array of strings back and you can pick what you need.
public static String[] SplitPath(string path)
{
String[] pathSeparators = new String[]
{
Path.DirectorySeparatorChar.ToString()
};
return path.Split(pathSeparators, StringSplitOptions.RemoveEmptyEntries);
}
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