C# 复制文件夹或目录（含文件）

2022-03-25 乐帮网

下面主要介绍在C#中复制文件夹和文件的方法封装。直接上代码如下：

using System.IO;

class DirectoryCopyExample
{

    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.       
        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, true);
        }

        // 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);
            }
        }
    }
}

使用也很简单,第三个参数控制是否复制子文件夹，如下：

string sourcePath = @"D:/temp/v1";
string targetPath = @"D:/temp/v1";
DirectoryCopy(sourcePath, targetPath, true);

参考链接：https://iqcode.com/code/csharp/c-copy-directory

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