How to Efficiently Copy an Entire Directory in C#?

C#efficiently copy the entire directory: complete guide

In programming, the content of the entire directory is often required. However, using the System.io class to implement this function may require recursive operations, which is cumbersome. Although Microsoft.VisualBasic provides a way, this seems to be a transformation solution.

Fortunately, there is a more direct solution, without recursion or external reference.

The method effectively solves this problem. It iterates the sub -directory and files of the source directory, create the corresponding directory and copy the file at the target location, and even replace the file of the same name.

CopyFilesRecursively

This method provides a simple and efficient way to copy the content of the entire directory to ensure that the newly created directory structure and file are exactly the same as the source directory.

private static void CopyFilesRecursively(string sourcePath, string targetPath)
{
    // 在目标路径中创建所有目录
    foreach (string dirPath in Directory.GetDirectories(sourcePath, "*", SearchOption.AllDirectories))
    {
        Directory.CreateDirectory(dirPath.Replace(sourcePath, targetPath));
    }

    // 将文件复制到目标路径，替换现有文件
    foreach (string newPath in Directory.GetFiles(sourcePath, "*.*", SearchOption.AllDirectories))
    {
        File.Copy(newPath, newPath.Replace(sourcePath, targetPath), true);
    }
}

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