CSAssocFile.cAssocFile.associateFileExtension C# (CSharp) Метод

        public void associateFileExtension(
            String extension, 
            String pathToExecute,
            String applicationName)
        {
            //' extension is three letters without the "."
            //' pathToExecute is full path to exe file
            //' application Name is any name you want as description of Extension

            String sKeyName;        // Holds Key Name in registry.
            String sKeyValue;       // Holds Key Value in registry.
    
            if (!extension.Contains("."))
            {
                //' This creates a Root entry for the extension to be associated with ' ApplicationName' .
                sKeyName = "." + extension;
                sKeyValue = applicationName;
                RegistryKey rKey = Registry.ClassesRoot.CreateSubKey(sKeyName);
                rKey.SetValue(sKeyName, sKeyValue);

                //' This creates a Root entry called ' ApplicationName' .
                sKeyName = applicationName;
                sKeyValue = applicationName;
                RegistryKey rKeyApp = Registry.ClassesRoot.CreateSubKey(sKeyName);
                rKeyApp.SetValue(sKeyName, sKeyValue);
    
                //' This sets the command line for ' ApplicationName' .
                sKeyName = applicationName;
                sKeyValue = "\"" + pathToExecute + "\" %1";
                rKey = rKeyApp.CreateSubKey("shell\\open\\command");
                rKey.SetValue(sKeyName, sKeyValue);
    
                //' This sets the default icon
                sKeyName = applicationName;
                sKeyValue = "\"" + pathToExecute + "\",0";
                rKey = rKeyApp.CreateSubKey("DefaultIcon");
                rKey.SetValue(sKeyName, sKeyValue);

                SHChangeNotify(HChangeNotifyEventID.SHCNE_ASSOCCHANGED, HChangeNotifyFlags.SHCNF_IDLIST, IntPtr.Zero, IntPtr.Zero);
            }
        }