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how to programatically "hide/show extensions for known file types"?
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Join Date: Apr 2007
Posts: 84
Reputation: 
Solved Threads: 5
Junior Poster in Training
Hi,
This seems like a really simple question.
Most of the time I choose to show extensions for known file types, but sometimes (most notably when renaming files by hand) it is convenient to hide them.
This is achived by checking the checkbox at:
Tools -> Folder Options -> View -> Hide extensions for know file types.
Now what I would like to do is write a really simple app which will change this for me instantly.
So maybe when I run the app once it enables the setting and when I run it again it disables the setting. Really simple.
I'm guessing there is a DWORD somewhere in the registry or something to that effect. How would I got about doing this programmatically?
PS. I would prefer to do this in C# if possible.
Thanks in advance,
This seems like a really simple question.
Most of the time I choose to show extensions for known file types, but sometimes (most notably when renaming files by hand) it is convenient to hide them.
This is achived by checking the checkbox at:
Tools -> Folder Options -> View -> Hide extensions for know file types.
Now what I would like to do is write a really simple app which will change this for me instantly.
So maybe when I run the app once it enables the setting and when I run it again it disables the setting. Really simple.
I'm guessing there is a DWORD somewhere in the registry or something to that effect. How would I got about doing this programmatically?
PS. I would prefer to do this in C# if possible.
Thanks in advance,
.iMMersE your soUL in LOVE.
its not easy enough to just do it manually?
if i was making an application to do this i would use autohotkey or autoit to just basically do a macro...
if i was making an application to do this i would use autohotkey or autoit to just basically do a macro...
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Join Date: Apr 2007
Posts: 84
Reputation:
Solved Threads: 5
Junior Poster in Training
Thanks for fast reply!
Yes, but it is is even easier to have a once click app in my taskbar. 
Also, for files on the desktop, folder options are not immediately accessible.
Also, I like learning new things, and lastly, I have OCD.
I would rather not use a third party app for such a simple task. I'm sure in the end it just comes down to changing a single value somewhere in the registry...
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Originally Posted by icyshout 
its not easy enough to just do it manually?
Also, for files on the desktop, folder options are not immediately accessible.
Also, I like learning new things, and lastly, I have OCD.
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Originally Posted by icyshout
if i was making an application to do this i would use autohotkey or autoit to just basically do a macro...
.iMMersE your soUL in LOVE.
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Join Date: Apr 2007
Posts: 84
Reputation:
Solved Threads: 5
Junior Poster in Training
Woo, I figured it out.
Works perfectly (in XP anyway).
It really is this simple:
Problem is that it doesn't update instantly... you have to hit refresh (or close windows explorer and open it again).
I wonder if there's a way to force the OS to invalidate or something...
Works perfectly (in XP anyway).
It really is this simple:
using Microsoft.Win32;
namespace ShowHideExtensions
{
class Program
{
static void Main()
{
RegistryKey key =
Registry.CurrentUser.CreateSubKey(
"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced");
if ((int)key.GetValue("HideFileExt") == 0)
{
key.SetValue("HideFileExt", 1);
}
else
{
key.SetValue("HideFileExt", 0);
}
}
}
}Problem is that it doesn't update instantly... you have to hit refresh (or close windows explorer and open it again).
I wonder if there's a way to force the OS to invalidate or something...
.iMMersE your soUL in LOVE.
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Join Date: Apr 2007
Posts: 84
Reputation:
Solved Threads: 5
Junior Poster in Training
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Originally Posted by fozbat
Surely you could acheive this with a simple .reg file on the desktop
Foz
.iMMersE your soUL in LOVE.
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Originally Posted by phalaris_trip
I wonder if there's a way to force the OS to invalidate or something...
Refreshing explorer:
http://social.msdn.microsoft.com/For...b-4580be9b344f
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