Changing name if that already exists - c#

How can I change the foldername if there exists some other folder with that name?
I tried in the below manner but it didn't work :(
private int ik;
protected void Button1_Click(object sender, EventArgs e)
{
string folderpath = #"C:\Users\nouser\Documents\Visual Studio 2010\WebSites\folders";
string foldername = TextBox1.Text;
string newPath = System.IO.Path.Combine(folderpath, foldername);
if (Directory.Exists(Path.Combine(folderpath, foldername)))
{
foldername = foldername + Convert.ToString(ik);
ik = ik + 1;
}
else
{
System.IO.Directory.CreateDirectory(newPath);
Response.Write("Folder created");
}
}
This code is able to create a new folder but unable to change the folder name from "newfolder" to "newfolder1" if "newfolder" already exists.

I'm assuming you want something where if you try to create a folder named "foo" but a folder named "foo" exist already you want your new folder to be called "foo1"? If so you'll have to detect if the folder exists or not and create a new name for it. You can do something like this
var count = 1;
var originalPath = newPath;
while(Directory.Exists(newPath)){
newPath = originalPath + count;
count++;
}
Directory.CreateDirectory(newPath);
This ensures that your new path doesn't already exist and if it does will ensure you get a unique name for your folder.
In your example I wasn't sure what you were doing with the variable
ik
I think thats where you were trying to create a unique directory, but what happens if you already have a newFolder1 there? This is why you should use a while loop to keep checking

Use system.IO.Directory move
System.IO.Directory.Move("newfolder","newfolder1");
For more information see msdn:
http://msdn.microsoft.com/en-us/library/system.io.directory.move.aspx

Use Move like this:
System.IO.Directory.Move("old name", "new name");

Related

Check if filename exist in the folder directory

Hi I have a code that you can save file and give specific file naming.
the problem is how can I check if file exist in the folder directory.
What I'm trying to do is like this.
FileInfo fileInfo = new FileInfo(oldPath);
if (fileInfo.Exists)
{
if (!Directory.Exists(newPath))
{
Directory.CreateDirectory(newPath);
}
fileInfo.MoveTo(string.Format("{0}{1}{2}", newPath, extBox1t.Text + "_" + textBox2.Text + "_" + textBox3.Text, fileInfo.Extension));
im trying to add MessageBox.Show in the below
if (!Directory.Exists(newPath))
{
MessageBox.Show("File Exist. Please Rename!");
Directory.CreateDirectory(newPath);
But it does not work. Or is there a way to add extension name at the last part of filename it should like this
Example: STACKOVERFLOWDOTCOME_IDNUM_11162022_0
if STACKOVERFLOWDOTCOME_IDNUM_11162022 exist it will rename to STACKOVERFLOWDOTCOME_IDNUM_11162022_0
it will add _0 at the last part.
One way to do it is to write a method that extracts the directory path, name, and extension of the file from a string that represents the full file path. Then we can create another variable to act as the "counter", which we'll use to add the number at the end of the file name (before the extension). We can then create a loop that checks if the file exists, and if it doesn't we'll increment the counter, insert it into the name, and try again.
For example:
public static string GetUniqueFileName(string fileFullName)
{
var path = Path.GetDirectoryName(fileFullName);
var name = Path.GetFileNameWithoutExtension(fileFullName);
var ext = Path.GetExtension(fileFullName);
var counter = 0;
// Keep appending a new number to the end of the file name until it's unique
while(File.Exists(fileFullName))
{
// Since the file name exists, insert an underscore and number
// just before the file extension for the next iteration
fileFullName = Path.Combine(path, $"{name}_{counter++}{ext}");
}
return fileFullName;
}
To test it out, I created a file at c:\temp\temp.txt. After running the program with this file path, it came up with a new file name: c:\temp\temp_0.txt

Increment the file name if the file already exists in c#

Tried the below logic in windows form for file name incremental, if the file already exists in the specified path. but the files are created with the names "New1.txt2","New1.txt2.txt3". how the files can be created as "New1.txt", "New2.txt", "New3.txt"...."Newn.txt" on every button Click?
String filename =#"C:\path";
if (File.Exists(filename))
{
count++;
filename = filename + count.ToString()+".txt";
There is one more problem in your code. Why do you have file names like "New1.txt2","New1.txt2.txt3", "New1.txt2.txt3.txt4"? Because you don't keep initial filename somewhere. So, I'd propose to keep two variables for filenames: for instance, filename_initial and filename_current.
Try something like this:
String filename_initial = #"C:\path\New.txt";
String filename_current = filename_initial;
count = 0;
while (File.Exists(filename_current))
{
count++;
filename_current = Path.GetDirectoryName(filename_initial)
+ Path.DirectorySeparatorChar
+ Path.GetFileNameWithoutExtension(filename_initial)
+ count.ToString()
+ Path.GetExtension(filename_initial);
}

Whats the code to create a directory if it doesnt exist?

I am having a problem with coding my save-directory. I want it to create a folder called "Ausgabe" (Output) on the current users Desktop, but I do not know how to check if it already exists and if it doesn't then create it.
This is my current code for that part so far:
public partial class Form1 : Form
{
string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
// need some code here
}
What do I add in order to make it do what I want it to do?
You can check if a directory exists using
Directory.Exists(pathToDirectory)
and create a directory using
Directory.CreateDirectory(pathToDirectory)
EDIT In response to your comment:
string directoryPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "Ausgabe")
should give you the path to a folder named 'Ausgabe' in the users Desktop-folder.
Just use Directory.CreateDirectory. If the directory exists the method will not create it (in other words it contains a call to Directory.Exists internally)
public partial class Form1 : Form
{
string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
public Form1()
{
string myFolder = Path.Combine(path, "Ausgabe");
Directory.CreateDirectory(myFolder);
}
To use this method you need to add a using System.IO to the top of your Form1.cs file.
I wish also to say that the Desktop is not the most appropriate place to create a directory for your application. There is a proper place provided by the System and it is under the ProgramData enum (CommonApplicationData or ApplicationData)
string path = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
As per this doc, the Directory.CreateDirectory Method (String) will
Creates all directories and subdirectories in the specified path
unless they already exist.
So it is fine to use like this:
string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
string desktopFolder = Path.Combine(path, "New Folder");
Directory.CreateDirectory(desktopFolder);
You can use the Directory.Exists() method: https://msdn.microsoft.com/en-us/library/system.io.directory.exists(v=vs.110).aspx
Your code would propebly look something like this:
public static void Main()
{
// Specify the directory you want to manipulate.
string path = #"c:\MyDir";
try
{
// Determine whether the directory exists.
if (Directory.Exists(path))
{
Console.WriteLine("That path exists already.");
return;
}
// Try to create the directory.
DirectoryInfo di = Directory.CreateDirectory(path);
Console.WriteLine("The directory was created successfully at {0}.", Directory.GetCreationTime(path));
// Delete the directory.
di.Delete();
Console.WriteLine("The directory was deleted successfully.");
}
catch (Exception e)
{
Console.WriteLine("The process failed: {0}", e.ToString());
}
finally {}
}
I have had a recent issue so here is my solution,
I had to find the deployed directory
var deployedDir = Assembly.GetEntryAssembly().CodeBase;
deployedDir = Path.GetDirectoryName(deployedDir);
deployedDir = deployedDir.Replace("file:\\", "");
var pathToDirectory= Path.Combine(deployedDir, "YourFileName");
Then do what the above answers show and create the directory if it doesnt exist,
Directory.CreateDirectory(pathToDirectory)

Reading the correct directory

I've tested the code and the directory gets the correct input, but for some reason it can't find it. Is there something I'm missing why I can't find any directory?
Here is my code pretty simplistic as of right now.
public partial class Form1 : Form
{
string fileName;
string dirName;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
dirName = textBox1.Text;
fileName = textBox2.Text;
if (System.IO.Directory.Exists(dirName))
{
if (System.IO.File.Exists(fileName))
{
System.IO.File.Delete(fileName);
}
else
{
MessageBox.Show("Invalid Directory or File Name");
}
}
}
That's because I guess you're passing the directory path by an input control in this way "C:/examplePath/" and it should be declared in this way "C:\\examplePath" because the escape characters, and probably you'll get another error further because when you're asking for a file's existence, you must to declare it concatenating directory path plus filename (and its extension).
so the final string should be like this "c:\\exampleDir\\examplefile.ext"
or simply you should try:
dirName = string.Format("#{0}", textBox1.Text);
fullPathFile = string.Format("{0}/{1}", dirName, textBox2.Text);
And then you use "fullPathFile" instead of "fileName" variable.
Don't forget to debug your application for making sure what's the string values.
Based on your code, it appears fileName and dirName come from two different textbox controls. And you also dont do any sort of combining the file path (or so it appears). So when you call Directory.Exists() it makes sense that this would work but it can't find the file. When you use File.Exists() you need to pass in not only the file name but also the directory where its located. To do this use the Path.Combine() method.
if (System.IO.Directory.Exists(dirName))
{
string filePath = System.IO.Path.Combine(dirName, fileName);
if (System.IO.File.Exists(filePath))
{
System.IO.File.Delete(filePath);
}
else
{
MessageBox.Show("Invalid Directory or File Name");
}
}

Rename image files on server directory

I need some help in renaming some images in a directory located at /images/graphicsLib/.
All image names in /graphicsLib/ have naming convention that looks like this:
400-60947.jpg. We call the "400" part of the file the prefix and we call the "60957" part the suffix. The entire file name we call the sku.
So if you saw the contents of /graphicLib/ it would look like:
400-60957.jpg
400-60960.jpg
400-60967.jpg
400-60968.jpg
402-60988.jpg
402-60700.jpg
500-60725.jpg
500-60733.jpg
etc...
Using C# & System.IO , what is an acceptable way to rename all image files base on the prefix of the file name? Users need to be able to enter in the current prefix, see all images in the /graphicsLib/ that match, then enter in the new prefix to have all those files renamed with the new prefix. Only the prefix of the file gets renamed, the rest of the file name needs to be unchanged.
What I have so far is:
//enter in current prefix to see what images will be affected by
// the rename process,
// bind results to a bulleted list.
// Also there is a textbox called oldSkuTextBox and button
// called searchButton in .aspx
private void searchButton_Click(object sender, EventArgs e)
{
string skuPrefix = oldSkuTextBox.Text;
string pathToFiles = "e:\\sites\\oursite\\siteroot\\images\graphicsLib\\";
string searchPattern = skuPrefix + "*";
skuBulletedList.DataSource = Directory.GetFiles(pathToFiles, searchPattern);
skuBulletedList.DataBind();
}
//enter in new prefix for the file rename
//there is a textbox called newSkuTextBox and
//button called newSkuButton in .aspx
private void newSkuButton_Click(object sender, EventArgs e)
{
//Should I loop through the Items in my List,
// or loop through the files found in the /graphicsLib/ directory?
//assuming a loop through the list:
foreach(ListItem imageFile in skuBulletedList.Items)
{
string newPrefix = newSkuTextBox.Text;
//need to do a string split here?
//Then concatenate the new prefix with the split
//of the string that will remain changed?
}
}
You could look at string.Split.
Loop over all files in your directory.
string[] fileParts = oldFileName.Split('-');
This will give you an array of two strings:
fileParts[0] -> "400"
fileParts[1] -> "60957.jpg"
using the first name in your list.
Your new filename then becomes:
if (fileParts[0].Equals(oldPrefix))
{
newFileName = string.Format("(0)-(1)", newPrefix, fileParts[1]);
}
Then to rename the file:
File.Move(oldFileName, newFileName);
To loop over the files in the directory:
foreach (string oldFileName in Directory.GetFiles(pathToFiles, searchPattern))
{
// Rename logic
}
Actually you should iterate each of the files in the directory and rename one by one
To determine the new file name, you may use something like:
String newFileName = Regex.Replace("400-60957.jpg", #"^(\d)+\-(\d)+", x=> "NewPrefix" + "-" + x.Groups[2].Value);
To rename the file, you may use something like:
File.Move(oldFileName, newFileName);
If you are not familiar with regular expressions, you should check:
http://www.radsoftware.com.au/articles/regexlearnsyntax.aspx
And download this software to pratice:
http://www.radsoftware.com.au/regexdesigner/

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