I have to strip a file path and get the parent folder.
Say my path is
\\ServerA\FolderA\FolderB\File.jpg
I need to get
File Name = File.jog
Folder it resides in = FolderB
And parent folder = FolderA
I always have to go 2 levels up from where the file resides.
Is there an easier way or is a regular expression the way to go?
FileInfo is your friend:
using System;
using System.IO;
class Test
{
static void Main(string[] args)
{
string file = #"\\ServerA\FolderA\FolderB\File.jpg";
FileInfo fi = new FileInfo(file);
Console.WriteLine(fi.Name); // Prints File.jpg
Console.WriteLine(fi.Directory.Name); // Prints FolderB
Console.WriteLine(fi.Directory.Parent.Name); // Prints FolderA
}
}
string fileName = System.IO.Path.GetFileName(path);
string parent = System.IO.Path.GetDirectoryName(path);
string parentParent = System.IO.Directory.GetParent(parent);
Check out the Directory class (better choice than DirectoryInfo in this case). It does everything you need. You should not use a regex or any other parsing technique.
var fi = new FileInfo(#"\\ServerA\FolderA\FolderB\File.jpg");
fi.Name
fi.Directory.Name
fi.Directory.Parent.Name
You have a few options to do this actually which use actual .net objects instead of regex.
You can use the FileInfo:
FileInfo fileInfo = new FileInfo(#"\\ServerA\FolderA\FolderB\File.jpg");
fileInfo.Name //will give you the file name;
DirectoryInfo directory = fileInfo.Directory; //will give you the parent folder of the file (FolderB);
directory.Parent; //will give you this directories parent folder (FolderA)
If you know for sure that you are always dealing with a file and two directories, try using split:
string s = #"\\ServerA\FolderA\FolderB\File.jpg";
string[] parts = s.Split('\'); // might need '\\'
string file = parts[parts.Length];
string parentDir = parts[parts.Length - 1];
string grandParentDir = parts[parts.Length - 2];
Related
I have an array of filepaths in a directory and I'm trying to move certain files based on alphabet.
string[] filePaths = Directory.GetFiles(#"C:\user\desktop\folder", "*.txt");
foreach (var file in filePaths)
{
if (file.StartsWith("A"))
{
//Move file
The obvious problem is that file.StartWith is pulling the entire filepath (C:\user\desktop\folder\Albert.txt) Which doesn't start with 'A'
So what would be the best way to just target the start of the actual file?
Thanks in advance.
I got it working with Path.GetFileName as per the suggestion by #Jimi
What about this code
var dir = new DirectoryInfo(#"C:\user\desktop\folder");
var files = dir.GetFiles();
foreach (var file in files)
{
if(file.Name.StartsWith("A"))
{
//Move file
You say you're looking to move files by alphabet- if you mean to put files into a folder whose name is the same as the first char of the filename then perhaps:
var desktop = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); //don't hard code the path to the desktop
var root = Path.Combine(desktop, "foldernamehere"); //use path.combine to build paths
foreach(var f in directory.EnumerateFiles(root, "*.txt")){ //prefer EnumerateFiles over GetFiles
var filename = Path.GetFileName(f);
var dest = Path.Combine(root, filename.Remove(1));
Directory.CreateDirectory(dest); //safe to call even if exists, ensures exists
File.Move(f, Path.Combine(dest, filename));
}
See comments for more info
If you have a string that represents a full filename (or directory name), and you want the name without the directory, consider to use Path.GetFileName
string fullFileName = "C:\user\desktop\folder\Albert.txt";
string fileName = Path.GetDirectoryName(fullFileName);
fileName will be "Albert.txt"
With this in mind, your query will be easy:
IEnumerable<string> fullFileNames = ...
char startChar = 'A';
IEnumerable<string> fileNamesThatStartWithStartChar = fullFileNames
.Where(fileName => Path.GetDirectoryName(fileName).StartsWitch(startChar));
In words: from every fileName in the sequence of fullFileName, take the fileName without the directory information. Keep the fileName if this "fileName without directory information" starts with the startChar.
Note: StartsWitch(char) is case sensitive. If you want to check case insensitive, use String.StartsWitch(string, stringComparison)
There's room for improvement!
If you think that there might be a chance that you won't be using all information of all files, consider to use Directory.EnymerateFiles instead of GetFiles. This way, if at the end of your LINQ you decide to use only 3 of the fetched files (or worse: FirstOrDefault(), or Any()), you won't have fetched all files.
Beginner coder here.
I need to add the GetLastWriteTime string to my filename using the (rename) file.move method. How do I add a string using file.move?
I've looked up some similar info, and I've gotten part of the answer I need. System.IO.File.Move("oldfilename", "newfilename"); is the code I'll need help with. I tried adding a string to the newfilename, but it only supports directory.
string[] files = Directory.GetFiles("C:/foto's", "*", SearchOption.TopDirectoryOnly);
string filename = Path.GetFileName(photo);
DateTime fileCreatedDate = System.IO.File.GetLastWriteTime(filename);
System.IO.File.Move(#"C:\foto's", #"C:\foto's" + fileCreatedDate);
Expected error, string cannot be accepted in a directory place.
I've always preferred to use FileInfo objects for stuff like this as they have the dates built in, have MoveTo rather than using the static File.Move etc ...
FileInfo[] fis = new DirectoryInfo(#"C:\foto's").GetFiles("*", SearchOption.TopDirectoryOnly);
foreach(FileInfo fi in fis){
//format a string representing the last write time, that is safe for filenames
string datePart = fi.LastWriteTimeUtc.ToString("_yyyy-MM-dd HH;mm;ss"); //use ; for time because : is not allowed in path
//break the name into parts based on the .
string[] nameParts = fi.Name.Split('.');
//add the date to the last-but-one part of the name
if(nameParts.Length == 1) //there is no extension on the file
nameParts[0] += datePart;
else
nameParts[nameParts.Length-1] += datePart;
//join the name back together
string newName = string.Join(".", nameParts);
//move the file to the same directory but with a new name. Use Path.Combine to join directory and new file name into a full path
fi.MoveTo(Path.Combine(fi.DirectoryName, newName));
}
Directory.Move(#"c:\foto's", #"c:\photos"); //fix two typos in your directory name ;)
I have a dropdown with list of file names. When a file name is selected in the dropdown I do the following
string filename = ddl.SelectedItem.Text;
string path = "F:\\WorkingCopy\\files\\" + filename +".docx";
DownloadFile(path,filename);
In the file folder files may contain any extension . Since i have hard coded ".docx" in string path everything works fine. But I need to get the extension of the file name with the ddl.SelectedItem.Text alone. Can you tell me how to do this?
Things I have
1.) File name without extension in
string filename = ddl.SelectedItem.Text;
2.) Path where the file is located
string path = "F:\\WorkingCopy\\files\\" + filename
I am trying to get the file extension with these . Can any one suggest on this?
You can use Directory.EnumerateFiles() like this:
string path = "F:\\WorkingCopy\\files\\";
string filename = ddl.SelectedItem.Text;
string existingFile = Directory.EnumerateFiles(path, filename + ".*").FirstOrDefault();
if (!string.IsNullOrEmpty(existingFile))
Console.WriteLine("Extension is: " + Path.GetExtension(existingFile));
Directory.EnumerateFiles searches the path for files like filename.*. Path.GetExtension() returns the extension of the found file.
In general, I prefer to use EnumerateFiles() instead of GetFiles because it returns an IEnumerable<string> instead string[]. This suggests that it only returns the matching files as needed instead searching all matching files at once. (This doesn't really matter in your case, just a general note).
Use the Directory.GetFiles() method. Something like this
string[] files = Directory.GetFiles("F:\\WorkingCopy\\files\\", filename+".*");
This should get you an array of filenames with the same filename but different extensions. If you have only one, then you can always use the first one.
You can use Directory.GetFiles Method:
string result = Directory.GetFiles(path, filename + ".*").FirstOrDefault();
see here
here " * " is the WildCard and will search for the Filename starts with YourFileName.
you can achieve that with followed by line
try
{
var extensions = new List<string>();
var files = Directory.GetFiles("F:\\WorkingCopy\\files\\", filename + ".*", System.IO.SearchOption.TopDirectoryOnly);
foreach (var tmpfile in files)
extensions.Add(Path.GetExtension(tmpfile));
}
catch (Exception ex)
{
throw ex;
}
will this help you?
You can simply split them by dot, For example, try this code
string folder = #"F:\\WorkingCopy\\files\\";
var files = System.IO.Directory.GetFiles(folder, filename + ".*");
if (files.Any())
{
string ext = System.IO.Path.GetExtension(files.First()).Substring(1);
}
This code gives me result that the extension for this is txt file.
I'm new to C# and struggle with string parsing. I have a string like this:
C:\User\Max\Pictures\
And I got multiple file paths:
C:\User\Max\Pictures\car.jpg
C:\User\Max\Pictures\trains\train.jpg
How can I strip the base path from those file paths to get:
car.jpg
trains\train.jpg
Something like this failed:
string path = "C:\\User\\Max\\Pictures\\";
string file = "C:\\User\\Max\\Pictures\\trains\\train.jpg";
string newfile = file.Substring(file.IndexOf(path));
You want to get the substring of file after the length of path:
string newfile = file.Substring(path.Length);
Note that it's a good idea to use Path methods like Path.GetFileName() when dealing with file paths (though it's not good applyable to the "train" example).
The other answer would be to replace your path with an empty string :
string filePath = file.Replace(path, "");
There are special classes to handle filepaths
var filePath = new FileInfo("dd");
In filePath.Name is the filename of the file whitout directory
So for your scenario you want to strip base dir. So you can do this
var filePath = new FileInfo(#"c:\temp\train\test.xml");
var dir = filePath.FullName.Replace(#"c:\temp", String.Empty);
The closest I get is using new FileInfo(path).FullPath, but as far as I know FileInfo is for files only, not directory.
See also my comments to Jon Skeet's answer here for context.
The Path class also gives you a lot of nice methods and properties, e.g. GetFullPath(). See MSDN for all details.
Path.GetFullPath()
I think it's-
DirectoryInfo.FullName
Try this:
String strYourFullPath = "";
IO.Path.GetDirectoryName(strYourFullPath)
Use the DirectoryInfo class which extends FileSystemInfo and will give the correct result for either files or directories.
string path = #"c:\somefileOrDirectory";
var directoryInfo = new DirectoryInfo(path);
var fullPath = directoryInfo.FullName;
Use the DirectoryInfo class for paths to directories. Works much in the same matter as FileInfo.
Note that the property for the path is called FullName.
DirectoryInfo di = new DirectoryInfo(#"C:\Foo\Bar\");
string path = di.FullName;
If you want to determine whether a path is a file or a directory, you can use static methods from the Path class:
string path1 = #"C:\Foo\Bar.docx";
string path2 = #"C:\Foo\";
bool output1 = Path.HasExtension(path1); //Returns true
bool output2 = Path.HasExtension(path2); //Returns false
However, paths could also contain something that might resemble an extension, so you might want to use it in conjunction with some other checks, e.g. bool isFile = File.Exists(path);
According to msdn, FileSystemInfo.FullName gets the full path of the directory or file, and can be applied to a FileInfo.
FileInfo fi1 = new FileInfo(#"C:\someFile.txt");
Debug.WriteLine(fi1.FullName); // Will produce C:\someFile.txt
FileInfo fi2 = new FileInfo(#"C:\SomeDirectory\");
Debug.WriteLine(fi2.FullName); // Will produce C:\SomeDirectory\
You can use file.getdirectory to get this done.