Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

How to retrieve the most recently used directory

Posted on 2004-08-04
11
Medium Priority
?
423 Views
Last Modified: 2012-05-05
When I use OpenFileDialog, and do not set the InitialDirectory, the dialog defaults to the directory previously selected by the user.  This works even when the app is closed and re-started.

How can I retrieve that most recently opened directory, so I can use it in a FolderBrowserDialog()?

I looked through Environment and Application namespaces, but every path I see points to a fixed directory somewhere, not to the most recent directory selected by the user.
0
Comment
Question by:rschaaf
11 Comments
 
LVL 37

Accepted Solution

by:
gregoryyoung earned 750 total points
ID: 11719872
OpenFileDialog stores the last used folder in the registry.
0
 

Author Comment

by:rschaaf
ID: 11719979
Where in the registry?
0
 
LVL 37

Expert Comment

by:gregoryyoung
ID: 11720051
im not sure but I am quite sure you shouldnt be doing that :)
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 4

Expert Comment

by:NTAC
ID: 11720266
You can save it in a file, and read that file each time you start--like a *.ini for your brogram.
0
 

Author Comment

by:rschaaf
ID: 11721848
What I want is access to THAT path, the one used by the OpenFileDialog().  There must be some way to do it...
0
 
LVL 37

Expert Comment

by:gregoryyoung
ID: 11721856
he is suggesting that you duplicate the logic ... when they save, save the folder they saved on your own in the registry.
0
 

Author Comment

by:rschaaf
ID: 11723114
Okay - let me state my problem again.

I do not want to use OpenFileDialog.  I want to use FolderBrowserDialog() because I need the user to pick a directory, not a file.  But I want FolderBrowserDialog to default the the previously used directory, just like OpenFileDialog does when you set OpenFileDialog.InitialDirectory = null.

How can I discover what initial directory OpenFileDialog defaults to, without actually calling it?

I am increasing the points to 250.
0
 

Author Comment

by:rschaaf
ID: 11723175
I think I found it.

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\ComDlg32\OpenSaveMRU\*

Look at MRUList key.  Take the first character. Look at the key with that letter.

Does anyone have a better way? I'm not sure that the '*' key name in the registry means...
0
 

Author Comment

by:rschaaf
ID: 11723249
This seems to be working, at least under XP/2000

RegistryKey rk = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\ComDlg32\OpenSaveMRU\*");
string MRUList = rk.GetValue("MRUList").ToString();
string MostRecent = MRUList[0].ToString();
string MRU = rk.GetValue(MostRecent).ToString();
string MRUPath = Path.GetDirectoryName(MRU);

MRUPath now contains the folder most recently used in the OpenFileDialog().
0
 
LVL 9

Expert Comment

by:s_sansanwal
ID: 11723265
Its not working on my computer.
Microsoft don't save this information in the registry and that why FolderBrowserDialog loses selectedpath after application is closed. FolderBrowserDialog selects same value until the object is not destroyed i.e it stores value on the stack.
To implement your functionality, you need to save selectedpath to registry yourself after ShowDialog(); and read it from registry at startup of application. Assign this value to selectedpath property of FolderBrowserDialog

Cheers,
S Sansanwal
0
 

Author Comment

by:rschaaf
ID: 11727419
I'm going to award the points to greoryyoung who pointed me to the registry.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
Hello there! As a developer I have modified and refactored the unit tests which was written by fellow developers in the past. On the course, I have gone through various misconceptions and technical challenges when it comes to implementation. I would…
This Micro Tutorial will teach you how to add a cinematic look to any film or video out there. There are very few simple steps that you will follow to do so. This will be demonstrated using Adobe Premiere Pro CS6.
Please read the paragraph below before following the instructions in the video — there are important caveats in the paragraph that I did not mention in the video. If your PaperPort 12 or PaperPort 14 is failing to start, or crashing, or hanging, …

972 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question