static void Example1()
{
/// <summary>
/// This class encapsulates some simple VSS logic. Its goal is to allow
/// a user to backup a single file from a shadow copy (presumably because
/// that file is otherwise unavailable on its home volume).
/// </summary>
/// <example>
/// This code creates a shadow copy and copies a single file from
/// the new snapshot to a location on the D drive. Here we're
/// using the AlphaFS library to make a full-file copy of the file.
/// <code>
string source_file = @"C:\Windows\system32\config\sam";
string backup_root = @"D:\Backups";
string backup_path = Path.Combine(backup_root, Path.GetFileName(source_file));
// Initialize the shadow copy subsystem.
using (VssBackup vss = new VssBackup())
{
vss.Setup(Path.GetPathRoot(source_file));
string snap_path = vss.GetSnapshotPath(source_file);
// Here we use the AlphaFS library to make the copy.
Alphaleonis.Win32.Filesystem.File.Copy(snap_path, backup_path);
}
}
static void Example2()
{
//This code creates a shadow copy and opens a stream over a file
//on the new snapshot volume.
string filename = @"C:\Windows\system32\config\sam";
// Initialize the shadow copy subsystem.
using (VssBackup vss = new VssBackup())
{
vss.Setup(Path.GetPathRoot(filename));
// We can now access the shadow copy by either retrieving a stream:
using (Stream s = vss.GetStream(filename))
{
Debug.Assert(s.CanRead == true);
Debug.Assert(s.CanWrite == false);
}
}
}