将文件从列表框复制到另一个目录

Question

I'm fairly new to C# and what I'm trying to do is

1. Search for a file
2. List all matching files into a listbox
3. Copy the whole folder where the file is located to another place

I found bits and pieces on the web that I'm using. Right now it's only the btn_search_Click part that is working.

using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btn_search_Click(object sender, EventArgs e)
        {
            try
            {
                listBox1.Items.Clear();
                //Directory to search in
                DirectoryInfo Di = new DirectoryInfo(@"D:\xxxx\Versionen");
                FileInfo[] nPfad = Di.GetFiles(textBox1.Text, SearchOption.AllDirectories);
                Int32 nLengePfad = nPfad.GetLength(0);
                listBox1.Items.AddRange(nPfad);

            }
            catch (Exception)
            {
                MessageBox.Show("File not found");

            }

        }
        private void btn_save_Click(object sender, EventArgs e)
        {
            {
                string sourceFile = @"D:\Users\Public\public\test.txt";
                string destinationFile = @"D:\Users\Public\private\test.txt";

                // To move a file or folder to a new location:
                System.IO.File.Move(sourceFile, destinationFile);

                // To move an entire directory. To programmatically modify or combine
                // path strings, use the System.IO.Path class.
                System.IO.Directory.Move(@"C:\Users\Public\public\test\", @"C:\Users\Public\private");
            }
        }
    }
}

My question now is, what would the code look like, if I want to select a file from the listbox and copy NOT the file but the folder it's located in to another place. I already have set a btn_save and a basic code to move files, but I need someone to show me a way to copy any selected file from the listbox or rather copy the folder of the selected file.

I'm fairly new to C# and am open for new approaches. If I'm completely wrong with the code, scratch it, show me a correct or easier way to achieve the same

Answer 1

You can move directly the directory with Directory.Move .

Using the FileInfo.DirectoryName you can get the Directory path from the FileInfo[] SelectedItems.

var itemsToMove = myListBox.SelectedItems.Cast<FileInfo>();
var directoriesTheyAreIn = itemsToMove.Select(x => x.DirectoryName);

var cleanDirectoriesList = directoriesTheyAreIn.Distinct();
//As many file can be in the same Dir we only need to move the dire once to move those file.

But what if Dir contains both selected and unselected files? Here I will move them all.

foreach (var path in cleanDirectoriesList)
{
    // here you have to craft your destination directory
    string destinationDirectory = "";
    Directory.Move(path, destinationDirectory);
}

From your question it's unclear what part of the old path should be keep in the new path. but if it's based on your "D:\\xxxx\\Versionen" string you can simply replace this part with the new root path "NewRoot\\foo\\bar" :

 string destinationDirectory = path.Replace(@"D:\xxxx\Versionen", @"G:\FooBAR\NEWPATH\");

If you need to move only the selected file you can blindly call Directory.CreateDirectory before copying each file, as it won't throw error if the directory already exist. Grouping on directory to avoid useless instruction could have been possible but I feel like it won't be that easy to modify. Here the code will simply be: create the directory then move the file .

foreach (var item in itemsToMove) {
    string destinationDirectory = @"BasedPath\" + " Craft it ";
    Directory.CreateDirectory(destinationDirectory);
    File.Move(item.FullName, destinationDirectory + item.Name);
}

Answer 2

Store the list of files into a List<FileInfo> and iterate through with foreach . This worked for me:

        string destination = @"C:\Some\Destination\";
        string actualFile = string.Empty;
        foreach (var file in fileList)
        {
            actualFile = file.FullName;
            File.Copy(actualFile, destination + Path.GetFileName(actualFile));
        }