Source and Target have the same subdirectories like this :
c:\fs\source\a\
c:\fs\source\b\
c:\fs\target\a\
c:\fs\target\b\
I am battling with copying files from source to target if not existing files. What is the best way in C# to compare source folders with target folders - check if target files dont exit, copy files from a specific source (c:\fs\source\a\config.xml and app.config) to a specific target (c:\fs\target\a\). If target files exist, ignore it. How to write it in C#?
Your code example very much appreciated. Thanks!
public void TargetFileCreate()
{
foreach (var folder in SourceFolders)
{
string[] _sourceFileEntries = Directory.GetFiles(folder);
foreach (var fileName in _sourceFileEntries)
{ //dont know how to implement here:
//how to compare source file to target file to check if files exist or not
//c:\fs\source\A\config.xml compares to c:\fs\target\A\ (no files) that should be pasted
//c:\fs\source\B\config.xml compares to c:\fs\target\B\config.xml that is already existed - no paste
}
}
}
foreach (var file in Directory.GetFiles(source))
{
File.Copy(file, Path.Combine(target, Path.GetFileName(file)), false);
}
You can check for each file if it exists this way:
string curFile = #"c:\temp\test.txt";
Console.WriteLine(File.Exists(curFile) ? "File exists." : "File does not exist.");
put this inside your loop. then copy those files there.
MSDN CODE:
// Simple synchronous file copy operations with no user interface.
// To run this sample, first create the following directories and files:
// C:\Users\Public\TestFolder
// C:\Users\Public\TestFolder\test.txt
// C:\Users\Public\TestFolder\SubDir\test.txt
public class SimpleFileCopy
{
static void Main()
{
string fileName = "test.txt";
string sourcePath = #"C:\Users\Public\TestFolder";
string targetPath = #"C:\Users\Public\TestFolder\SubDir";
// Use Path class to manipulate file and directory paths.
string sourceFile = System.IO.Path.Combine(sourcePath, fileName);
string destFile = System.IO.Path.Combine(targetPath, fileName);
// To copy a folder's contents to a new location:
// Create a new target folder, if necessary.
if (!System.IO.Directory.Exists(targetPath))
{
System.IO.Directory.CreateDirectory(targetPath);
}
// To copy a file to another location and
// overwrite the destination file if it already exists.
System.IO.File.Copy(sourceFile, destFile, true);
// To copy all the files in one directory to another directory.
// Get the files in the source folder. (To recursively iterate through
// all subfolders under the current directory, see
// "How to: Iterate Through a Directory Tree.")
// Note: Check for target path was performed previously
// in this code example.
if (System.IO.Directory.Exists(sourcePath))
{
string[] files = System.IO.Directory.GetFiles(sourcePath);
// Copy the files and overwrite destination files if they already exist.
foreach (string s in files)
{
// Use static Path methods to extract only the file name from the path.
fileName = System.IO.Path.GetFileName(s);
destFile = System.IO.Path.Combine(targetPath, fileName);
System.IO.File.Copy(s, destFile, true);
}
}
else
{
Console.WriteLine("Source path does not exist!");
}
// Keep console window open in debug mode.
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
}
}
foreach (var file in Directory.GetFiles(source))
{
var targetFile = System.IO.Path.Combine(target, System.IO.Path.GetFileName(file));
if(!File.Exists(targetFile))
{
File.Copy(file, targetFile)
}
}
Related
This question already has answers here:
copy files from one location to another
(4 answers)
Closed 8 months ago.
I want to know how to copy a file, not regarding it's type, pptx docx txt, and paste it in another address of the directory in C#. I assume that the File.Copy function is only available for .txt file, and it is not a file copy and paste, it is a contents copy and paste.
Thank you.
This code is from the Microsoft docs, apparently it can copy .jpg files and if it can it should be able to copy all file types
string sourceDir = #"c:\current";
string backupDir = #"c:\archives\2008";
try
{
string[] picList = Directory.GetFiles(sourceDir, "*.jpg");
string[] txtList = Directory.GetFiles(sourceDir, "*.txt");
// Copy picture files.
foreach (string f in picList)
{
// Remove path from the file name.
string fName = f.Substring(sourceDir.Length + 1);
// Use the Path.Combine method to safely append the file name to the path.
// Will overwrite if the destination file already exists.
File.Copy(Path.Combine(sourceDir, fName), Path.Combine(backupDir, fName), true);
}
// Copy text files.
foreach (string f in txtList)
{
// Remove path from the file name.
string fName = f.Substring(sourceDir.Length + 1);
try
{
// Will not overwrite if the destination file already exists.
File.Copy(Path.Combine(sourceDir, fName), Path.Combine(backupDir, fName));
}
// Catch exception if the file was already copied.
catch (IOException copyError)
{
Console.WriteLine(copyError.Message);
}
}
// Delete source files that were copied.
foreach (string f in txtList)
{
File.Delete(f);
}
foreach (string f in picList)
{
File.Delete(f);
}
}
catch (DirectoryNotFoundException dirNotFound)
{
Console.WriteLine(dirNotFound.Message);
}
Source: https://learn.microsoft.com/en-us/dotnet/api/system.io.file.copy?view=net-6.0#system-io-file-copy(system-string-system-string-system-boolean)
I need to move a file existing on a mapped folder named A:\ to another mapped folder B:\ using the code below
File.Move(#"A:\file.txt",#"B:\");
it return the error below
Could not find file 'A:\file.txt'.
i tried to open A:\file.txt in folder explorer and it open the file normally
It looks like File.Move only works for files on local drives.
File.Move actually invokes MoveFile which states that both source and destination should be:
The current name of the file or directory on the local computer.
You would be better by using a combination of File.Copy and File.Delete.
Copy the file from A to B, then delete the file from A.
As stated before, File.Move needs sourceFileName and destFileName.
And you are missing the Filename in the second parameter.
If you want to move you file and keep the same name you can Extract the File name from the sourceFileName with GetFileName and use it in your destFileName
string sourceFileName = #"V:\Nothing.txt";
string destPath = #"T:\";
var fileName = Path.GetFileName(sourceFileName);
File.Move(sourceFileName, destPath + fileName );
Here is a debug code:
public static void Main()
{
string path = #"c:\temp\MyTest.txt";
string path2 = #"c:\temp2\MyTest.txt";
try
{
if (!File.Exists(path))
{
// This statement ensures that the file is created,
// but the handle is not kept.
Console.WriteLine("The original file does not exists, let's Create it.");
using (FileStream fs = File.Create(path)) {}
}
// Ensure that the target does not exist.
if (File.Exists(path2)) {
Console.WriteLine("The target file already exists, let's Delete it.");
File.Delete(path2);
}
// Move the file.
File.Move(path, path2);
Console.WriteLine("{0} was moved to {1}.", path, path2);
// See if the original exists now.
if (File.Exists(path))
{
Console.WriteLine("The original file still exists, which is unexpected.");
}
else
{
Console.WriteLine("The original file no longer exists, which is expected.");
}
}
catch (Exception e)
{
Console.WriteLine("The process failed: {0}", e.ToString());
}
}
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I have a problem about copying an exe file in my visual studio project folder to my computer desktop or somewhere else in my computer by using C#.
How can I do that?
This answer is directly from Microsoft website, please check the reference link.
The following example shows how to copy files and directories.
// Simple synchronous file copy operations with no user interface.
// To run this sample, first create the following directories and files:
// C:\Users\Public\TestFolder
// C:\Users\Public\TestFolder\test.txt
// C:\Users\Public\TestFolder\SubDir\test.txt
public class SimpleFileCopy
{
static void Main()
{
string fileName = "test.txt";
string sourcePath = #"C:\Users\Public\TestFolder";
string targetPath = #"C:\Users\Public\TestFolder\SubDir";
// Use Path class to manipulate file and directory paths.
string sourceFile = System.IO.Path.Combine(sourcePath, fileName);
string destFile = System.IO.Path.Combine(targetPath, fileName);
// To copy a folder's contents to a new location:
// Create a new target folder, if necessary.
if (!System.IO.Directory.Exists(targetPath))
{
System.IO.Directory.CreateDirectory(targetPath);
}
// To copy a file to another location and
// overwrite the destination file if it already exists.
System.IO.File.Copy(sourceFile, destFile, true);
// To copy all the files in one directory to another directory.
// Get the files in the source folder. (To recursively iterate through
// all subfolders under the current directory, see
// "How to: Iterate Through a Directory Tree.")
// Note: Check for target path was performed previously
// in this code example.
if (System.IO.Directory.Exists(sourcePath))
{
string[] files = System.IO.Directory.GetFiles(sourcePath);
// Copy the files and overwrite destination files if they already exist.
foreach (string s in files)
{
// Use static Path methods to extract only the file name from the path.
fileName = System.IO.Path.GetFileName(s);
destFile = System.IO.Path.Combine(targetPath, fileName);
System.IO.File.Copy(s, destFile, true);
}
}
else
{
Console.WriteLine("Source path does not exist!");
}
// Keep console window open in debug mode.
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
}
}
Reference: Microsoft (06-02-2018).
Get your working directory:
string appDir = AppDomain.CurrentDomain.BaseDirectory;
Specify your target directory:
string targetDir = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
Get the file(s) you want using Directory.GetFiles:
FileInfo[] files = new DirectoryInfo(appDir).GetFiles(*.*, SearchOption.TopDirectoryOnly);
Copy your files:
try
{
foreach(FileInfo file in files)
{
File.Copy(file.FullName, Path.Combine(targetDir, file.Name), true);
}
}
catch (Exception ex)
{
//Handle DirectoryAccess errors and others
}
I want to copy and paste sub-folders of source folder ABC To destination folder. But it is not working. Here is my C# code, it work's fine but it copies the whole folder instead of only the sub-folders.
// string fileName = "test.txt";
string sourcePath = "D:\\Shraddha\\Demo_Web_App\\Source";
string targetPath = "D:\\Shraddha\\Demo_Web_App\\Destination";
// Use Path class to manipulate file and directory paths.
string sourceFile = System.IO.Path.Combine(sourcePath);
string destFile = System.IO.Path.Combine(targetPath);
// To copy a folder's contents to a new location:
// Create a new target folder, if necessary.
if (System.IO.Directory.Exists(targetPath))
{
System.IO.Directory.CreateDirectory(targetPath);
}
// To copy a file to another location and
// overwrite the destination file if it already exists.
// System.IO.File.Copy(sourceFile, destFile, true);
// To copy all the files in one directory to another directory.
// Get the files in the source folder. (To recursively iterate through
// all subfolders under the current directory, see
// "How to: Iterate Through a Directory Tree.")
// Note: Check for target path was performed previously
// in this code example.
if (System.IO.Directory.Exists(sourcePath))
{
string[] files = System.IO.Directory.GetFiles(sourcePath);
// Copy the files and overwrite destination files if they already exist.
foreach (string s in files)
{
// Use static Path methods to extract only the file name from the path.
//fileName = System.IO.Path.GetFileName(s);
destFile = System.IO.Path.Combine(targetPath);
System.IO.File.Copy(s, destFile, true);
}
}
else
{
Console.WriteLine("Source path does not exist!");
}
// Keep console window open in debug mode.
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
Alright, here we go:
This doesn't really makes sense. If targetPath exists, create targetPath folder?
if (System.IO.Directory.Exists(targetPath))
{
System.IO.Directory.CreateDirectory(targetPath);
}
You probably meant:
if (!System.IO.Directory.Exists(targetPath))
{
System.IO.Directory.CreateDirectory(targetPath);
}
What you need to do first is, getting all directories to begin with:
var allDirectories = Directory.GetDirectories(targetPath, "*", SearchOption.AllDirectories);
then you can loop through allDirectories with foreach, find all files in each folder and copy the contents.
The following line cannot work like provided:
destFile = System.IO.Path.Combine(targetPath);
File.Copy expects a path to a file where you want to copy the content from "s", but you are providing only the destination folder. You have to include a filename in the Path.Combine method.
If you parse the path strings with the Path.GetFileName method for example, you can pass the result (only the filename without full source path) as an additional argument to Path.Combine to generate a valid destination path.
Additionally, like uteist already said, you have to get all subdirectories first, because in your code example, you're only copying the files, directly placed under your root source folder.
To keep the Directory structure
foreach (var dir in System.IO.Directory.GetDirectories(sourcePath))
{
var dirInfo = new System.IO.DirectoryInfo(dir);
System.IO.Directory.CreateDirectory(System.IO.Path.Combine(targetPath, dirInfo.Name));
foreach (var file in System.IO.Directory.GetFiles(dir))
{
var fileInfo = new System.IO.FileInfo(file);
fileInfo.CopyTo(System.IO.Path.Combine(targetPath, dirInfo.Name, fileInfo.Name));
}
};
De
I have to copy folders and files from one network folder to other. There are some files which cannot be copied since it is named with special characters.
There are so many folders and sub-folders with 3 GB of data. To avoid this problem, I want to write a C# program which can copy all folders, sub-folders and files
with a log file(notepad). Log file which should note the non-copying file details and its path so that easy to trace them further. Can anybody please help me quickly
by providing a c# program or at-least a reference. A console or Win-form application, I am using Visual studio 2010 and Windows 7
copying like below
Copy form :- https://ap.sharepoint.a5-group.com/cm/Shared Documents/IRD/EA
To :- https://cr.sp.a5-group.com/sites/cm/Shared Documents/IRD/EA
here, try this:
Edit: my answer works for local Network Directories, I didn't mention, that you want to copy directiories from HTTPS, for that you have to use WebClient with Credentials
class DirectoryCopyExample
{
string pathFrom = "C:\\someFolder";
string pathTo = "D:\\otherFolder";
string LogText = string.Empty;
static void Main()
{
// Copy from the current directory, include subdirectories.
DirectoryCopy(pathFrom, pathTo, true);
}
private static void DirectoryCopy(string sourceDirName, string destDirName, bool copySubDirs)
{
// Get the subdirectories for the specified directory.
DirectoryInfo dir = new DirectoryInfo(sourceDirName);
DirectoryInfo[] dirs = dir.GetDirectories();
if (!dir.Exists)
{
throw new DirectoryNotFoundException(
"Source directory does not exist or could not be found: "
+ sourceDirName);
}
// If the destination directory doesn't exist, create it.
if (!Directory.Exists(destDirName))
{
Directory.CreateDirectory(destDirName);
}
// Get the files in the directory and copy them to the new location.
FileInfo[] files = dir.GetFiles();
foreach (FileInfo file in files)
{
try
{
string temppath = Path.Combine(destDirName, file.Name);
file.CopyTo(temppath, false);
}
catch(Exception)
{
//Write Files to Log whicht couldn't be copy
LogText += DateTime.Now.ToString() + ": " + file.FullName;
}
}
// If copying subdirectories, copy them and their contents to new location.
if (copySubDirs)
{
foreach (DirectoryInfo subdir in dirs)
{
string temppath = Path.Combine(destDirName, subdir.Name);
DirectoryCopy(subdir.FullName, temppath, copySubDirs);
}
}
}
}
at the end you have to save the variable LogTex to the file, or whatever you need
source: http://msdn.microsoft.com/en-us/library/bb762914(v=vs.110).aspx