Default program of file.

[Rahul RK]

Hello friends, can we get default program of file specified. E.g. default program for .mp3 file may be windows media player/winamp like that. Is there any method which gives such details of default program. thanks in advance. Rahul Kulkarni

[Christian Graus]

You get that info via the registry, I don't know of a method that will look it up for you, however.

Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

[Tormod Fjeldskaar]

To see how this information is stored in the registry, you may want to read what Microsoft has to say about file types[^].

[Vasudevan Deepak Kumar]

This page (http://msdn2.microsoft.com/en-us/library/aa969375.aspx[^]) describes the keys used.

Vasudevan Deepak Kumar Personal Homepage Tech Gossips

[Tormod Fjeldskaar]

I can't see that it does. The page you point to describes how the Default Programs API works, i.e. how to tell windows the capabilities of a certain application.

[Kumar Arun]

MyComputer\HKey_Classes_Root\AudioCD\Shell\Play\Command Check it

Arun Kr

[Hessam Jalali]

as I know it can be retrieved with shell32 FindExecutable API but sometimes the results is not like what is Expected Maybe this going to help

    class Shell32Utils
    {
        const int FILENOASSOCIATED = 31;
        const int FILENOTFOUND = 2;
        const int PATHNOTFOUND = 3;
        const int SUCCESS = 32; //and longer
        const int BADFORMAT = 11;

        

        [DllImport("shell32", EntryPoint = "FindExecutable")]
        static extern int FindExecutable(string file, string directory, [MarshalAs(UnmanagedType.LPStr)] StringBuilder result);


        public static string Find(string file)
        {
            string fileName=System.IO.Path.GetFileName(file);
            string filePath = System.IO.Path.GetDirectoryName(file)+"\\";

            System.Text.StringBuilder res = new StringBuilder(1024);

            int stat = FindExecutable(fileName, filePath,  res);

            switch (stat)
            {
                case FILENOASSOCIATED: throw new Exception("File Not Associated");
                case FILENOTFOUND: throw new Exception("FileNot Found");

                case PATHNOTFOUND: throw new Exception("Path not Found");

                case BADFORMAT: throw new Exception("Bad Format");

                default: if (stat >= SUCCESS) return res.ToString();
                    else throw new Exception("Unknown Error");
            }
        }       
    }

good luck

[Rahul RK]

Thank you very much. It works fine :) Rahul Kulkarni