Windows Old Folder Linked to System: A Solution using Robocopy in C# for Backup and Restore

Using Robocopy with C# to Backup and Restore Data in Windows 10

When developing applications in Windows 10, it is often necessary to backup and restore important data such as code repositories, Selenium profiles, browser settings, and other important files. One tool that can help with this task is Robocopy, which is a command-line file copying tool built into Windows 10.

What is Robocopy?

Robocopy, or Robust File Copy, is a command-line tool that has been included in Windows operating systems since Windows Vista. It is designed to copy files and directories, including their permissions and attributes, and to handle errors and network failures more gracefully than other file copying tools. Robocopy supports a wide range of options, including the ability to copy only new or changed files, to preserve timestamps, and to resume copying after an interruption.

Using Robocopy with C#

While Robocopy can be used directly from the command line, it can also be called from C# using the Process class. Here is an example of how to use Robocopy to backup a directory called MyData to a backup directory called MyDataBackup using C#:

using System.Diagnostics;

...

string sourceDir = @"C:\MyData";
string destDir = @"D:\MyDataBackup";

string robocopyCmd = $"/MAXAGE:1 /DCOPY:DA /E /R:3 /W:5 /LOG+:C:\robocopy.log \"{sourceDir}\" \"{destDir}\"";

Process.Start("cmd.exe", $"/c {robocopyCmd}");

In this example, the /MAXAGE:1 option tells Robocopy to copy only files that have been modified in the last 24 hours, and the /DCOPY:DA option tells it to copy the directory timestamps as well as the files. The /E option tells Robocopy to copy subdirectories, including empty ones, and the /R:3 and /W:5 options tell it to retry copying failed files up to three times with a five-second delay between retries. The /LOG+:C:\robocopy.log option tells Robocopy to append its log to a file called robocopy.log in the root of the C: drive.

Restoring Data with Robocopy

To restore data from a backup made with Robocopy, simply run the same command again, but with the source and destination directories reversed. For example:

string robocopyCmd = $"/MAXAGE:1 /DCOPY:DA /E /R:3 /W:5 /LOG+:C:\robocopy.log \"{destDir}\" \"{sourceDir}\"";

Process.Start("cmd.exe", $"/c {robocopyCmd}");

• Robocopy is a command-line file copying tool built into Windows 10 that can handle errors and network failures more gracefully than other file copying tools.
• Robocopy can be called from C# using the Process class to backup and restore important data such as code repositories, Selenium profiles, browser settings, and other important files.
• Robocopy supports a wide range of options, including the ability to copy only new or changed files, to preserve timestamps, and to resume copying after an interruption.

References

• Robocopy
• Process Class