I have some Images in a folder. The images can be easily transferred from the First to the Second folder. So far, everything seems to be ok, but how to pass an image from the First directory to the Second directory which is identical to the image that already exists in the Second folder? In simple terms: How to update or overwrite the files in this Second folder? Many thanks in advance for your help!
string pathName = #"C:\Users\Desktop\Images\Second\";
foreach (var file in Directory.EnumerateFiles(#"C:\Users\Desktop\Images\"))
{
if (!Directory.Exists(pathName))
{
Directory.CreateDirectory(pathName);
}
string destFile = Path.Combine(pathName, Path.GetFileName(file));
if (!File.Exists(destFile))
{
File.Move(file, destFile);
}
}
UPDATE:
I forgot, that method Move has third parameter bool overwrite. You can use it
File.Move(file, destFile, true);
You will find more info here
You can use File.OpenRead, File.OpenWrite and stream.CopyTo methods for this task
if (!File.Exists(destFile))
{
File.Move(file, destFile);
}
else
{
using (var sourceStream = File.OpenRead(file))
using (var desStream = File.OpenWrite(destFile))
sourceStream.CopyTo(desStream);
}
The move method can have a third parameter a boolean to override
Move(String, String, Boolean)
Moves a specified file to a new location, providing the options to specify a new file name and to overwrite the destination file if it already exists.
Check https://learn.microsoft.com/en-us/dotnet/api/system.io.file.move?view=net-5.0
Or You can use File.replace() if the File exist in destination to save a backup of the deleted file.
public static void Replace (string sourceFileName, string destinationFileName, string? destinationBackupFileName);
it will be like this
string pathName = #"C:\Users\Desktop\Images\Second\";
foreach (var file in Directory.EnumerateFiles(#"C:\Users\Desktop\Images\"))
{
if (!Directory.Exists(pathName))
{
Directory.CreateDirectory(pathName);
}
string destFile = Path.Combine(pathName, Path.GetFileName(file));
string backupFile = 'Some place to backup the deleted image'.
if (!File.Exists(destFile))
{
File.Move(file, destFile);
}
else
{
File.Replace(file, destFile, backupFile);
}
}
you can check https://learn.microsoft.com/en-us/dotnet/api/system.io.file.replace?view=net-5.0 for documentations
private void btn_Backup_Click(object sender, EventArgs e)
{
List<DirectoryInfo> SourceDir = this.lbox_Sources.Items.Cast<DirectoryInfo>().ToList();
string TargetDir = this.tbox_Target.Text;
foreach (DirectoryInfo directory in SourceDir)
{
foreach (var file in directory.GetFiles())
if (this.checkbox_zipfiles.Checked == true)
{
System.IO.Compression.ZipFile.CreateFromDirectory(directory.FullName, TargetDir + #"\test.zip");
}
else
{
Microsoft.VisualBasic.FileIO.FileSystem.CopyDirectory(directory.FullName, TargetDir, true);
}
}
}
I'm creating a backup application and when I try to zip the files I need to backup it says: "The file 'C:\Users\Lada1208\Desktop\test\test.zip' already exists."
even thought the folder is empty before so it's trying to create the test.zip file two times for some reason. Any idea why?
As pointed out by s.m. in the comment above, the call to ZipFile.CreateFromDirectory() will attempt to create a zip file with the same location and file name for all the source directories.
If the intention is to create a single archive containing files from all the source directories, then the Zipfile.CreateFromDirectory() "shortcut" method cannot be used. Instead, you need to call ZipFile.Open(), get a ZipArchive object and use its CreateEntry() method to add every file individually.
Trying to copy all files/directories inside a directory to a new location that I create.
Users select the 'backup drive' to work with to in a combobox, then when they click the backup desktop button it simply creates a backup directory on that drive and copies all the files into that directory.
The backup directory gets created on the drive appropriately - but the first file it hits it kicks off an error.
private void backupDesktopButton_Click(object sender, EventArgs e)
{
//set the destionationLocation to the selectedDrive
string selectedDrive = backupDriveCombo.SelectedItem.ToString();
string destinationLocation = selectedDrive+"Backups-" + DateTime.Now.Month.ToString()+"-"+DateTime.Now.Year.ToString()+"\\Desktop\\";
if (!Directory.Exists(destinationLocation))
{
Directory.CreateDirectory(destinationLocation);
}
string desktopFolder = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
string[] fileList = Directory.GetFiles(desktopFolder);
foreach (string file in fileList)
{
//move the file
File.Copy(file, destinationLocation);
}
}
I get the error:
IOException was unhandled.
The filename, directory name, or volume label syntax is incorrect.
In the 'Autos' window (VS2010) I see the locations are set correctly:
destinationLocation = the appropriate directory (C:\Backups-8-2016\Desktop\)
file = the appropriate first file (C:\Users\myusername\Desktop\myshortcut.url)
What am I missing? I have all rights to be able to copy/paste/create things and the directory to store it gets created - just a problem moving the file.
From the documentation https://msdn.microsoft.com/en-us/library/c6cfw35a(v=vs.110).aspx
the second parameter:
The name of the destination file. This cannot be a directory or an existing file.
you need to concat the filename to the folder.
Try something like this
string[] fileList = Directory.GetFiles(desktopFolder);
foreach (string file in fileList)
{
string targetFile = Path.Combine(destinationLocation, Path.GetFileName(file));
if (File.Exists(targetFile)) File.Delete(targetFile);
File.Copy(file, targetFile);
}
I'm trying make a program that extracts a specific zip file everytime the program launches.
this is my code to create the zip file:
//creating the file
ZipFile File = new ZipFile(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\ABCD.zip");
//Adding files
File.AddFile(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\ab.dat", "");
File.AddFile(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\cd.dat", "");
//Save the file
File.Save();
I want to Extract the files ab.dat and cd.dat from ABCD.zip to the .exe file directory automatically.
Thanks for helping.
Taken mostly from the DotNetZip documentation:
private void Extract()
{
//Zip Location
string zipToUnpack = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\ABCD.zip";
// .EXE Directory
string unpackDirectory = System.IO.Path.GetDirectoryName(
System.Reflection.Assembly.GetExecutingAssembly().Location);
using (ZipFile zip = ZipFile.Read(zipToUnpack))
{
foreach (ZipEntry e in zip)
{
//If filename matches
if (e.FileName == "ab.dat" || e.FileName == "cd.dat")
e.Extract(unpackDirectory, ExtractExistingFileAction.OverwriteSilently);
}
}
}
You can also filter the results using ExtractSelectEntries by selecting the files there:
zip.ExtractSelectedEntries("name = 'ab.dat' OR name = 'cd.dat'", "\", unpackDirectory, ExtractExistingFileAction.OverwriteSilently)
Or selecting all .dat files with a wildcard
zip.ExtractSelectedEntries("name = '*.dat'", "\", unpackDirectory, ExtractExistingFileAction.OverwriteSilently)
Use each ZipEntry's FileName property to see if it has the name you would like to extract.
I need to copy a file to another path, leaving the original where it is.
I also want to be able to rename the file.
Will FileInfo's CopyTo method work?
Have a look at File.Copy()
Using File.Copy you can specify the new file name as part of the destination string.
So something like
File.Copy(#"c:\test.txt", #"c:\test\foo.txt");
See also How to: Copy, Delete, and Move Files and Folders (C# Programming Guide)
Yes. It will work: FileInfo.CopyTo Method
Use this method to allow or prevent overwriting of an existing file. Use the CopyTo method to prevent overwriting of an existing file by default.
All other responses are correct, but since you asked for FileInfo, here's a sample:
FileInfo fi = new FileInfo(#"c:\yourfile.ext");
fi.CopyTo(#"d:\anotherfile.ext", true); // existing file will be overwritten
I tried to copy an xml file from one location to another. Here is my code:
public void SaveStockInfoToAnotherFile()
{
string sourcePath = #"C:\inetpub\wwwroot";
string destinationPath = #"G:\ProjectBO\ForFutureAnalysis";
string sourceFileName = "startingStock.xml";
string destinationFileName = DateTime.Now.ToString("yyyyMMddhhmmss") + ".xml"; // Don't mind this. I did this because I needed to name the copied files with respect to time.
string sourceFile = System.IO.Path.Combine(sourcePath, sourceFileName);
string destinationFile = System.IO.Path.Combine(destinationPath, destinationFileName);
if (!System.IO.Directory.Exists(destinationPath))
{
System.IO.Directory.CreateDirectory(destinationPath);
}
System.IO.File.Copy(sourceFile, destinationFile, true);
}
Then I called this function inside a timer_elapsed function of certain interval which I think you don't need to see. It worked. Hope this helps.
You could also use File.Copy to copy and File.Move to rename it afterwords.
// Copy the file (specify true or false to overwrite or not overwrite the destination file if it exists.
File.Copy(mySourceFileAndPath, myDestinationFileAndPath, [true | false]);
// EDIT: as "astander" notes correctly, this step is not necessary, as File.Copy can rename already...
// However, this code could be adapted to rename the original file after copying
// Rename the file if the destination file doesn't exist. Throw exception otherwise
//if (!File.Exists(myRenamedDestinationFileAndPath))
// File.Move(myDestinationFileAndPath, myRenamedDestinationFileAndPath);
//else
// throw new IOException("Failed to rename file after copying, because destination file exists!");
EDIT
Commented out the "rename" code, because File.Copy can already copy and rename in one step, as astander noted correctly in the comments.
However, the rename code could be adapted if the OP desired to rename the source file after it has been copied to a new location.
string directoryPath = Path.GetDirectoryName(destinationFileName);
// If directory doesn't exist create one
if (!Directory.Exists(directoryPath))
{
DirectoryInfo di = Directory.CreateDirectory(directoryPath);
}
File.Copy(sourceFileName, destinationFileName);
File::Copy will copy the file to the destination folder and File::Move can both move and rename a file.
This is what I did to move a test file from the downloads to the desktop.
I hope its useful.
private void button1_Click(object sender, EventArgs e)//Copy files to the desktop
{
string sourcePath = #"C:\Users\UsreName\Downloads";
string targetPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
string[] shortcuts = {
"FileCopyTest.txt"};
try
{
listbox1.Items.Add("Starting: Copy shortcuts to dektop.");
for (int i = 0; i < shortcuts.Length; i++)
{
if (shortcuts[i]!= null)
{
File.Copy(Path.Combine(sourcePath, shortcuts[i]), Path.Combine(targetPath, shortcuts[i]), true);
listbox1.Items.Add(shortcuts[i] + " was moved to desktop!");
}
else
{
listbox1.Items.Add("Shortcut " + shortcuts[i] + " Not found!");
}
}
}
catch (Exception ex)
{
listbox1.Items.Add("Unable to Copy file. Error : " + ex);
}
}
TO Copy The Folder I Use Two Text Box To Know The Place Of Folder And Anther Text Box To Know What The Folder To Copy It And This Is The Code
MessageBox.Show("The File is Create in The Place Of The Programe If you Don't Write The Place Of copy And You write Only Name Of Folder");// It Is To Help The User TO Know
if (Fromtb.Text=="")
{
MessageBox.Show("Ples You Should Write All Text Box");
Fromtb.Select();
return;
}
else if (Nametb.Text == "")
{
MessageBox.Show("Ples You Should Write The Third Text Box");
Nametb.Select();
return;
}
else if (Totb.Text == "")
{
MessageBox.Show("Ples You Should Write The Second Text Box");
Totb.Select();
return;
}
string fileName = Nametb.Text;
string sourcePath = #"" + Fromtb.Text;
string targetPath = #"" + Totb.Text;
string sourceFile = System.IO.Path.Combine(sourcePath, fileName);
string destFile = System.IO.Path.Combine(targetPath, fileName);
if (!System.IO.Directory.Exists(targetPath))
{
System.IO.Directory.CreateDirectory(targetPath);
//when The User Write The New Folder It Will Create
MessageBox.Show("The File is Create in "+" "+Totb.Text);
}
System.IO.File.Copy(sourceFile, destFile, true);
if (System.IO.Directory.Exists(sourcePath))
{
string[] files = System.IO.Directory.GetFiles(sourcePath);
foreach (string s in files)
{
fileName = System.IO.Path.GetFileName(s);
destFile = System.IO.Path.Combine(targetPath, fileName);
System.IO.File.Copy(s, destFile, true);
}
MessageBox.Show("The File is copy To " + Totb.Text);
}
Old Question,but I would like to add complete Console Application example, considering you have files and proper permissions for the given folder, here is the code
class Program
{
static void Main(string[] args)
{
//path of file
string pathToOriginalFile = #"E:\C-sharp-IO\test.txt";
//duplicate file path
string PathForDuplicateFile = #"E:\C-sharp-IO\testDuplicate.txt";
//provide source and destination file paths
File.Copy(pathToOriginalFile, PathForDuplicateFile);
Console.ReadKey();
}
}
Source: File I/O in C# (Read, Write, Delete, Copy file using C#)
File.Move(#"c:\filename", #"c:\filenamet\filename.txt");