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Given a filesystem path, is there a shorter way to extract the filename without its extension?
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I have searched everywhere to find this answer but still can't find it.
I have a file in my Documents folder. I create and append a file with the same content in another folder. (Let's say Downloads). How do I give the new file the same name as the old file?
I just need help with naming the new file the same as the old. I already have it appending and sending to another folder. I'm using StreamReader to read the old file and StreamWriter to create the new file. I dont want to hard code a path to rename it, because there may be multiple files that I need to read.
It's not clear exactly what you're asking for, but I'll take a stab at it.
If you're using something like the File.Copy() method, then you just have to use the full file path for both the source and destination. If you're passing a string value with the full path to the file, you can get just the file name using Path.GetFileName()
Here's an example based on my loose guesstimation of your question:
var filename = Path.GetFileName(sourcePath);
var newPath = $"{destinationFolderPath}\\{filename}";
File.Copy(sourcePath, newPath);
Additional Reading: https://msdn.microsoft.com/en-us/library/system.io.file.copy(v=vs.110).aspx
https://msdn.microsoft.com/en-us/library/system.io.path.getfilename.aspx
There is a static function Path.GetFilename, which returns a file name contained in a path passed as the argument:
var filename = Path.GetFilename(#"c:\file.txt"); // filename = "file.txt"
Path also contains other useful funtions, such as GetFilenameWithoutExtension.
Use Path.GetFileName i.e.
// The path you want to copy the filename of.
// C:/Users/<username>/Documents/<some file> in your case.
var srcPath = //...
// The directory you want to copy to.
// C:/Users/<username>/Downloads in your case.
var destDir = //...
// Different directory, same filename.
var destPath = Path.Combine(destDir, Path.GetFileName(srcPath));
Related
I'm looking to make a program to make my life easier, I need to be able to easily select a folder, which I can do, I don't need help with that. I want to take the directory of a folder, and put that folder into a new folder with a specified name, and then zip up that folder into a zip format in which I can change the name and filetype of. Is this possible in vanilla C#? I've only ever done files for text and I've never looked at moving and packaging files. SO I'm really clueless, I'd just like to be guided into the right direction.
Edit: I found this code online, but I need to put the folder inside another folder, may I adapt upon this to do so?
string startPath = #"c:\example\start";
string zipPath = #"c:\example\result.zip";
string extractPath = #"c:\example\extract";
ZipFile.CreateFromDirectory(startPath, zipPath);
ZipFile.ExtractToDirectory(zipPath, extractPath);
So, after an extended chat discussion, here's what we've established.
The goal is to put the contents of a source directory into a zip with the following structure:
- Payload
|- name of source
|-- contents of source
Okay, so, starting from an input path called startPath:
var parent = Path.GetDirectoryName(startPath);
var payload = Path.Combine(parent, "payload");
Directory.CreateDirectory(payload); // ensure payload ex
Directory.Move(startPath, Path.Combine(payload, Path.GetFileName(startPath));
var zipPath = Path.Combine(parent, "export.zip");
File.Delete(zipPath);
ZipFile.CreateFromDirectory(payload , zipPath, CompressionLevel.Optimal, true);
The key is that true in the CreateFromDirectory call, that puts the entries in the archive under a directory with the same name as the directory being zipped (in this case, "payload"). Feel free to change CompressionLevel to other values if you want.
Now, this has the side effect of actually physically moving the source directory, which might not be the best user experience. If you want to avoid that, you'll have to basically do what ZipFile.CreateFromDirectory does by hand, which is to enumerate the source directory yourself and then copy the files into the zip archive (in which case you can name those files whatever you want):
var parent = Path.GetDirectoryName(startPath);
var zipPath = Path.Combine(parent, "export.zip");
File.Delete(zipPath);
using var zip = ZipFile.Open(zipPath, ZipArchiveMode.Create);
foreach(var file in Directory.EnumerateFiles(startPath, "*", SearchOption.AllDirectories))
{
// get the path of the file relative to the parent directory
// this gives us a path that starts with the source directory name
// e.g. C:\example\start\file.txt -> start\file.txt
var relativePath = Path.GetRelativePath(parent, file);
// construct the path of the entry in the archive
// this is "Payload", and then the relative path of the file
// we need to fix up the separators because zip entries use /
// e.g. start\file.txt -> Payload/start/file.txt
var entryPath = Path.Combine("Payload", relativePath).Replace(Path.DirectorySeparatorChar, '/');
// put the file in the archive
// to specify a compression level, pass it as the third parameter here
zip.CreateEntryFromFile(file, entryPath);
}
I'm using the following code just to copy a file from a smaller filepath into a longer file path (> 260 characters).
string dbCDataPath = Path.Combine(DYRECTORY_WITH_GUARANTEE_ACCESS,Path.GetFileName(pathFileName));
string targetFile = Path.Combine(Path.GetDirectoryName(pathFileName), Path.GetFileName(pathFileName));
File.Copy(dbCDataPath, targetFile, true);
I'm getting Could not find a part of the path error and I don't know why I have double checked both the source and the destination folders, both exists.
Any help will be highly appreciated.
You need to call File.Copy like this:
File.Copy(targetFile, dbCDataPath, true);
The first parameter of this method is sourceFile you want to copy, the second parameter is destination path.
How can I check if a file exists or not in the directory the executable is?
I know how I could code it like this.
string path = Application.StartupPath + "config.cfg"
if(!FileExists(path))
{
//create the file
}
But the problem I am facing is that, the file is created every single time, even when the file exists, overwriting the data of the cfg file with the default ones.
You are not creating the possible file path properly. Use Path.Combine like:
string path = Path.Combine(Application.StartupPath, "config.cfg");
You are getting a path without terminating \ from Application.StartupPath, later you are concatenating the file name to it, This will create an invalid path, and since that doesn't exist, you check fails.
Just to show, the actual reason for getting the error, you can fix your code like:
string path = Application.StartupPath +"\\"+ "config.cfg";
But, do not use the above code, instead use Path.Combine to join multiple path elements.
I just started learning C# and it looks like when you are writing an output file or reading an input file, you need to provide the absolute path such as follows:
string[] words = { "Hello", "World", "to", "a", "file", "test" };
using (StreamWriter sw = new StreamWriter(#"C:\Users\jackf_000\Projects\C#\First\First\output.txt"))
{
foreach (string word in words)
{
sw.WriteLine(word);
}
sw.Close();
}
MSDN's examples make it look like you need to provide the absolute directory when instantiating a StreamWriter:
https://msdn.microsoft.com/en-us/library/8bh11f1k.aspx
I have written in both C++ and Python and you do not need to provide the absolute directory when accessing files in those languages, just the path from the executable/script. It seems like an inconvenience to have to specify an absolute path every time you want to read or write a file.
Is there any quick way to grab the current directory and convert it to a string, combining it with the outfile string name? And is it good style to use the absolute directory or is it preferred to, if it's possible, quickly combine it with the "current directory" string?
Thanks.
You don't need to specify full directory everytime, relative directory also work for C#, you can get current directory using following way-
Gets the current working directory of the application.
string directory = Directory.GetCurrentDirectory();
Gets or sets the fully qualified path of the current working directory.
string directory = Environment.CurrentDirectory;
Get program executable path
string directory = System.IO.Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
Resource Link 1 Resource Link 2
defiantly, you no need specify full path , what is the good way you perform this type of criteria?
should use relative path #p.s.w.g mention already by comment to use Directory.GetCurrentDirectory and Path.Combine
some more specify by flowing way
You can get the .exe location of your app with System.Reflection.Assembly.GetExecutingAssembly().Location.
string exePath = System.Reflection.Assembly.GetExecutingAssembly().Location;
string exeDir = System.IO.Path.GetDirectoryName(exePath);
DirectoryInfo binDir = System.IO.Directory.GetParent(exeDir);
on the other hand
Internally, when getting Environment.CurrentDirectory it will call Directory.GetCurrentDirectory and when setting Environment.CurrentDirectory it will call Directory.SetCurrentDirectory.
Just pick a favorite and go with it.
thank you welcome C# i hope it will help you to move forward
I want to copy a file to a directory. I thought it would be a simple enough process.
This is the code im using:
string strSrcPath = "C:\Users\Documents\Development\source\11.0.25.10\",
strDstPath = "C:\Users\Documents\Development\testing\11.0.25.10\",
strFile = "BuildLog.txt"
File.Copy(Path.Combine(sourcePath, sourceFile), strDstPath);
The problem here is that when i'm doing the File.Copy it wants to copy one file to another, but I dont want to do that since the file does not exist in the destination path. Therefore I get thrown an error which states something along the lines of 'Cannot copy, strDstPath is a destination not a file"
Was there something I could use instead of File.Copy to copy a file that doesnt exist in the destinaion from the source to destination?
The problem is that the parameters are the source filename and the destination filename. You are passing a destination directory and the program is confused because you can't make the file into a directory.
Use instead:
File.Copy(Path.Combine(strSrcPath , strFile ), Path.Combine(strDstPath, strFile);
You seem to be passing some wrong parameter to the Path.Combine (the second one). It should be strFile instead of sourceFile which is quite unclear where is it coming from.
And you also need to provide a filename for the destination folder:
File.Copy(Path.Combine(sourcePath, strFile), Path.Combine(strDstPath, strFile));
You also need to escape the \ characters in your string because your code will probably not compile. This could be done by either using \\ or by using the # character at the beginning of your string.
string strSrcPath = #"C:\Users\Documents\Development\source\11.0.25.10\",
strDstPath = #"C:\Users\Documents\Development\testing\11.0.25.10\",
strFile = "BuildLog.txt"
File.Copy(Path.Combine(sourcePath, strFile), Path.Combine(strDstPath, strFile));
Also make sure that the destination folder you specified exists. If it doesn't exist you need to create it first (using the Directory.CreateDirectory method).
You have to specify a filename for your destination
so
File.Copy("XMLFile1.xml", #"c:\temp");
will fail where
File.Copy("XMLFile1.xml", #"c:\temp\XMLFile1.xml");
will not