private VssSnapshotProperties GetVssSnapshotFromTime(DateTime selectedCreationTime)
{
Debug.WriteLine(string.Format("Selected creation time: {0}", selectedCreationTime.ToLongTimeString()));
// Get selected restore point
SystemRestoreItem selectedSystemRestoreItem = null;
foreach (SystemRestoreItem sri in systemRestorePoints)
{
if (sri.CreationTime.ToLocalTime().CompareTo(selectedCreationTime) == 0)
{
selectedSystemRestoreItem = sri;
break;
}
}
// Enumerate snapshots using VSS API
IVssImplementation vssImplmentation = VssUtils.LoadImplementation();
////VssBackupComponents vss = new VssBackupComponents();
IVssBackupComponents vssBackup = vssImplmentation.CreateVssBackupComponents();
vssBackup.InitializeForBackup(null);
vssBackup.SetContext(VssSnapshotContext.All);
List <VssSnapshotProperties> snapshotHourMatches = new List <VssSnapshotProperties>();
List <VssSnapshotProperties> snapshotMinuteMatches = new List <VssSnapshotProperties>();
foreach (VssSnapshotProperties snapshot in vssBackup.QuerySnapshots())
{
DateTime truncatedSelectedRestoreItemTime = TruncateToHour(selectedSystemRestoreItem.CreationTime.ToLocalTime());
DateTime truncatedSnapshotTime = TruncateToHour(snapshot.CreationTimestamp);
if (truncatedSelectedRestoreItemTime.CompareTo(truncatedSnapshotTime) == 0)
{
snapshotHourMatches.Add(snapshot);
}
}
if (snapshotHourMatches.Count == 1)
{
Debug.WriteLine(string.Format("Snapshot creation time: {0}", snapshotHourMatches[0].CreationTimestamp.ToLongTimeString()));
return(snapshotHourMatches[0]);
}
else if (snapshotHourMatches.Count > 1)
{
foreach (VssSnapshotProperties snapshot in snapshotHourMatches)
{
DateTime truncatedSelectedRestoreItemTime = TruncateToMinute(selectedSystemRestoreItem.CreationTime.ToLocalTime());
DateTime truncatedSnapshotTime = TruncateToMinute(snapshot.CreationTimestamp);
if (truncatedSelectedRestoreItemTime.CompareTo(truncatedSnapshotTime) == 0)
{
snapshotMinuteMatches.Add(snapshot);
}
}
if (snapshotMinuteMatches.Count == 1)
{
Debug.WriteLine(string.Format("Snapshot creation time: {0}", snapshotMinuteMatches[0].CreationTimestamp.ToLongTimeString()));
return(snapshotMinuteMatches[0]);
}
else if (snapshotMinuteMatches.Count > 1)
{
Debug.WriteLine(string.Format("Found {0} potential matches", snapshotMinuteMatches.Count.ToString()));
// Find closest match
foreach (VssSnapshotProperties snapshot in snapshotMinuteMatches)
{
if (selectedSystemRestoreItem.CreationTime.ToLocalTime().CompareTo(snapshot.CreationTimestamp) < 0)
{
Debug.WriteLine(string.Format("Snapshot creation time: {0}", snapshot.CreationTimestamp.ToLongTimeString()));
return(snapshot);
}
}
}
}
return(null);
}
private void btnDelete_Click(object sender, EventArgs e)
{
// Get selected restore point
SystemRestoreItem selectedSystemRestoreItem = null;
string time = lvRestorePoints.Items[lvRestorePoints.SelectedIndices[0]].Text;
DateTime selectedCreationTime = DateTime.Parse(time);
foreach (SystemRestoreItem sri in systemRestorePoints)
{
if (sri.CreationTime.ToLocalTime().CompareTo(selectedCreationTime) == 0)
{
selectedSystemRestoreItem = sri;
break;
}
}
if (selectedSystemRestoreItem.SequenceNumber > 0)
{
// Need to display are you sure dialog!
string prompt = "Are you sure you want to remove system restore point?";
TaskDialogResult tdr = TaskDialog.Show(this, selectedSystemRestoreItem.CreationTime.ToString() + "\n" + selectedSystemRestoreItem.Description, prompt, this.Text, TaskDialogButtons.Yes | TaskDialogButtons.No, TaskDialogIcon.Warning);
// If the user is sure
if (tdr == TaskDialogResult.Yes)
{
// Remove the restore point
uint result = VolumeNativeMethods.SRRemoveRestorePoint(selectedSystemRestoreItem.SequenceNumber);
// If success
if (result == 0)
{
// Update internal data on system restore points and shadow storage
systemRestorePoints = new SystemRestorePoints();
shadowStorage = new ShadowStorage();
lblDiskSpace.Text = shadowStorage.UsedSpaceString;
UpdateListView(sender, e);
// Only show chkOlder if there are older restore points
int olderCount = 0;
foreach (SystemRestoreItem sri in systemRestorePoints)
{
if (sri.CreationTime.ToLocalTime().CompareTo(DateTime.Now.Subtract(TimeSpan.FromDays(5))) < 0)
{
olderCount++;
}
}
if (olderCount > 0)
{
chkHideNewest.Visible = true;
}
else
{
chkHideNewest.Visible = false;
}
}
else
{
MessageBox.Show("Error deleting restore point");
}
}
}
}
