Question

一个有关编码的问题（Visual Studio C＃Windows窗体应用程序）有两个文件夹：（源和目标），我建立了一个按钮“复制”。在（源）文件夹中具有随机文件夹，例如“ 20190401”，“ 20190402”，“ 20190403”，“ 20180401”，“ 20170401”和“ 20160401”。每个这些文件夹都有[10]个“ .txt”文件。如果我只想将所有内部带有[3]“ .txt”文件的“ 201904 **”文件夹复制到“ Target”文件夹中，该如何编码？

这里是我的代码，单击按钮后，该文件夹将不会复制。我猜这个代码有一些问题，直到现在我仍然没有找到它。希望你们能帮助我，谢谢。

*namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
  string FROM_DIR = "C:/Users/Desktop/Source/";
  string TO_DIR = "C:/Users/Desktop/Target/";      
  DirectoryInfo diCopyForm = new DirectoryInfo(FROM_DIR);
  DirectoryInfo[] fiDiskfiles = diCopyForm.GetDirectories();
  string directname = "201904";
  string filename = ".txt";

    foreach (DirectoryInfo newfile in fiDiskfiles)
    {
        try
        {
            if (newfile.Name == "2019") 
            {
                foreach (DirectoryInfo direc in newfile.GetDirectories())

                    if (direc.Name.StartsWith(directname))
                    {
                        int count = 0;

                        foreach (FileInfo file in direc.GetFiles())
                        {
                            if (file.Name.EndsWith(filename))
                            {
                                count++;
                            }
                        }

                        if (count == 3)
                        {
                            DirectoryCopy(direc.FullName,Path.Combine(TO_DIR,direc.Name), true);
                            count = 0;
                            MessageBox.Show("success");
                        }
                    }

            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }


    }

    private static void DirectoryCopy(string sourceDirName, string destDirName, bool copySubDirs)
    {
        // Get the subdirectories for the specified directory.
        DirectoryInfo dir = new DirectoryInfo(sourceDirName);
        if (!dir.Exists)
        {
            throw new DirectoryNotFoundException("Source directory does not exist or could not be found: "+ sourceDirName);
        }
        DirectoryInfo[] dirs = dir.GetDirectories();
        // 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)
        {
            string temppath = Path.Combine(destDirName, file.Name);
            file.CopyTo(temppath, false);
        }
        // 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);
            }
        }
    }

}

*}

通过单击按钮，将（源）文件夹中的所有“ 201904 **”文件夹和3个“ .txt”文件自动复制到（目标文件夹）。

Answer 1

您没有说要复制哪个3个txt文件，因此下面的代码复制了所有txt文件，请说明如何选择这些文件，我将对其进行编辑。

        const string Source = @"C:\Users\Desktop\Source\";
        const string Target = @"C:\Users\Desktop\Target\";
        const string StartsWith = "201904";
        const string FileType = "txt";
        public static void Copy()
        {
            if (!Directory.Exists(Source)) //Check if the source directory exists
                throw new Exception("Source directory is missing!");

            Directory.CreateDirectory(Target); //If the target directory doesn't exists it will create one
            var Directories = Directory.GetDirectories(Source, $"{StartsWith}*"); //Get directories which match the search pattern
            for (int i = 0; i < Directories.Length; i++)
            {
                DirectoryInfo directory = new DirectoryInfo(Directories[i]);
                Directory.CreateDirectory($"{Target}{directory.Name}"); //Create the directory in the target folder

                var Files = Directory.GetFiles($"{Source}{directory.Name}", $"*.{FileType}"); //Get files
                for (int j = 0; j < Files.Length; j++)
                {
                    FileInfo file = new FileInfo(Files[j]);
                    File.Copy($"{Source}{directory.Name}" + @"\" + file.Name, $"{Target}{directory.Name}" + @"\" + file.Name); //Copy the file to the target folder
                }
            }
        }

此代码选择所有以“ 201904”开头的目录及其中的所有txt文件，并将其复制到目标文件夹。

编辑：修复了代码中的错误

如何通过单击按钮将特定文件夹复制到新文件夹

1 个答案: