A file association associates a file with an application capable of opening that file. More commonly, a file association associates a class of files (usually determined by their filename extension, such as .txt) with a corresponding application.
Questions tagged [file-association]
413 questions
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Invoke file type action from Windows 7 command line
Is there a way to invoke actions defined for a file type from the command line? I used FileTypesMan to define .phpcli for PHP CLI scripts and added actions run(php) and edit(netbeans). They both appear on the context menu and work as expected. But…

JackVegas
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Windows 8 command line for Open With dialog
What is the Windows 8 version of the "rundll32.exe shell32.dll,OpenAs_RunDLL {path}" command?
I am trying to get the open with dialog in Java, which works in Windows 7, but does nothing on Windows 8
...
ProcessBuilder pb = new…

Enter Display Name Here
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Can A Webserver Force the Client's Computer to Open a Filetype with any Given Application
I'm pretty sure I already know the answer to this, as being able to force the client's computer to open a file with the "Webserver chosen application" would be a huge security risk, but I'm going to ask it anyways.
Can you force an end user's…

Goldentoa11
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add program to windows 8 URL:mailto program association list
in windows 8.1
I goto:
Control Panel > All ControlPanel Items > Default Programs > set Associations
and pick
MAILTO (URL:mailto)
it shows the following list to pick from
Outlook
Google Chrome
Mail
Look for an app in the Store
How do I register…

godzilla
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Open bat file does not start it but opens it in editor
Since some time, when I click on BAT file in Windows Explorer (Windows 7) the BAT file is not started. Instead, the BAT file is opened in Notepad. I tried to repair this, by using Right-click to use Open With... . No luck, because this function is…

Ivan Cenov
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Choose a program that windows will go open files with special format by batch-file
(sorry by the english)
I have a app that uses the following command to open files:
java.awt.Desktop.getDesktop().open(new File(caminhoArquivo));
the problem is that i uses a special format to open files (ex.: .TXZ), and if i don´t open the file…

Chico Luiz
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Windows Phone 8: Auto-Launch *.pptx fail
I have this code for launching a file on Windows phone 8:
string ppFile = @"Assets\Documents\test.txt";
var file = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync(ppFile);
var success = await…

SirIsaac
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How to associate Python scripts with active virtualenv?
After I activate specific virtualenv I'd like to have Python scripts, which I run using only their name (script.py), be executed using Python interpreter from virtualenv. How to do this?
It's a followup to the Why doesn't virtualenv on Windows…

Piotr Dobrogost
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How to remove file associations with IDEA?
OS - Windows 7 32-bit. Command assoc .java= does not help. I have deleted IDEA. Now I need to delete ALL file associations with IDEA.
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FileAssociationInfo And ProgramAssociationInfo
I'm developing a application for Windows Mobile using C#(.Net Compact Framework 3.5), but I need to associate my program with a file type. When I try to use FileAssociationInfo I'm getting this error: The type or namespace name 'FileAssociationInfo'…

Nathan Campos
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2 answers
Associate a File To a Application
I'm building two programs, a text editor and a zipper, but in this two programs I want to associate a file type to they, but how can I do this? Thanks.

Nathan Campos
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How to associate file during folder copy on Mac OS X
I involved with the development of an application that is intended to deploy on multiple desktop system including the Macintosh.
Our team decided we would like to a drag and drop installation for the Macintosh. However, the application is intended…

Tron Thomas
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VisualWorks 7.9.1 Ubuntu 12.04
I would like to associate ~/vw7.9.1/bin/linux86/vwlinux86gui with .im files on Ubuntu 12.04, so that a double click of an .im file will open it up.
Anyone know the magic?
Thx for any tips...

user1898940
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How can I get the the "Application used to perform action" with C#
in the windows XP explorer "folder options" dialog is a File type tab. In the file type tab the known filteypes are associated with a program.
When the "Edit File Type" dialog is visible, there are different actions for a file type like open or…

Thorben
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"Windows (Vista) cannot find "abc.def". Make sure you typed the name correctly and then try again."
In Windows Vista (only) when I double click on a file in Windows Explorer that is associated with my application, the following message is displayed:
"Windows cannot find "abc.def". Make
sure you typed the name correctly and
then try…
nevf