Associate file types with my application C#

Question

I have been trying to get my application to associate certain file types with the app.
The easiest way as I have seen is to change the registry in [HKEY_CLASSES_ROOT].
However, in windows 7 (and i'm guessing up) there is no way to do so getting admin permission. 获得管理员许可就无法这样做。
I have been tangling this issue for a very long time and I would appreciate if someone would point me in the right direction.
Which values do I need to create and change in the registry? To what values? (My software name? What description?)
Thanks alot.

Answer 1

Just an example below of association between .txt files and TxtEditor.exe

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT.txt] @="test.txt"

[HKEY_CLASSES_ROOT\\test.txt] @="Text Document"

[HKEY_CLASSES_ROOT\\test.txt\\DefaultIcon] @="%SystemRoot%\\SysWow64\\imageres.dll,-102"

[HKEY_CLASSES_ROOT\\test.txt\\shell]

[HKEY_CLASSES_ROOT\\test.txt\\shell\\open]

[HKEY_CLASSES_ROOT\\test.txt\\shell\\open\\command] @="\\"C:\\TxtEditor.exe\\" \\"%1\\""

[HKEY_CLASSES_ROOT\\test.txt\\shell\\print]

[HKEY_CLASSES_ROOT\\test.txt\\shell\\print\\command] @="\\"C:\\TxtEditor.exe\\" /p \\"%1\\""

Also have a look at http://www.codeproject.com/Articles/17023/System-File-Association

Answer 2

Found the answer: For that I created a faulty file type and associated it to my program.
Then I searched the registry for changes and copied the pathes of those changes.
The code is here and I would like to here if anyone has a better answer.

`
        public static void SetAssociation(string Extension, string KeyName, string OpenWith, string FileDescription)
        {
            RegistryKey OpenMethod;
            RegistryKey FileExts;


        //HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.avi\UserChoice -->"Progid" "Applications\YEPlayer.exe"
        OpenMethod = Registry.CurrentUser.OpenSubKey(@"Software\Classes\Applications\", true);
        OpenMethod.CreateSubKey(KeyName + @".exe\shell\open\command").SetValue("",'"'+OpenWith+'"'+ " "+ '"'+"%1"+'"');

        FileExts = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\", true);
        foreach (string child in FileExts.OpenSubKey(Extension).GetSubKeyNames())
        {
            FileExts.OpenSubKey(Extension,true).DeleteSubKey(child);
        }
        FileExts.CreateSubKey(Extension + @"\UserChoice").SetValue("Progid", @"Applications\" + KeyName +".exe");
    }

'
Thanks alot!