File association in C#

[jojoey]

Hi,

I'm about to make an Editor and wanted to know how to make a file association.

I want that when I click a .txt,.rtf file my Editor opens....

just like in Notepad...how can I do that?

If you have a sample source code....please post... :)

[Ryanjmchale]

I would just write the app name/location to registry

ie;

HKEY_CLASSES_ROOT\txtfile.txt (.rtf etc..)

use the Microsoft.Win32.RegistryKey class

string keyName;

string keyValue;

//This creates a Root entry called "MyEditor".

keyName = "MyEditor";

keyValue = "My Editor Application";

RegistryKey key;

key = Registry.ClassesRoot.CreateSubKey(keyName);

key.SetValue("",keyValue);

key = key.CreateSubKey("shell");

key = key.CreateSubKey("open");

key = key.CreateSubKey("command");

key.SetValue("","c:\\temp\\Editor.exe %1");

keyName = ".txt";

keyValue = "MyEditor";

key = Registry.ClassesRoot.CreateSubKey(keyName);

key.SetValue("", keyValue);

[jojoey]

...thanks...and how can I make my App read as example the txt file when this

registry thing is done?

Example:

-Click joe.txt

-Open MyEditor

-Read the file

[jojoey]

Can anyone help me further?

[azcodemonkey]

  jojoey said:

...thanks...and how can I make my App read as example the txt file when this

registry thing is done?

Example:

-Click joe.txt

-Open MyEditor

-Read the file

585348795[/snapback]

Your app would have to have a command line parser that would read your arguments, and then load the file. If your Main method doesn't already have an arguments parameter, just add string[] args.

static void Main(string[] args){}

http://msdn.microsoft.com/library/default....erstutorial.asp

[jojoey]

All I need?

...before I do all the work...is there any complete sample...?

[azcodemonkey]

  jojoey said:

All I need?

...before I do all the work...is there any complete sample...?

585350421[/snapback]

The shell handles the tokenization of your command-line.

key.SetValue("","c:\\temp\\Editor.exe %1");

the %1 is the token for your command-line argument. So, if you dbl-click on a file in Explorer, the shell will call your editor, passing the filename clicked upon as an argument.

You need to use the System.IO tools to open the file as text(or whatever), and read the lines into your editor. You may want to go through some tutorials for File I/O.

http://msdn.microsoft.com/library/default....rclasstopic.asp