FileRegistrationHelper

FileRegistrationHelper

 public class FileRegistrationHelper 
    { 
        public static void SetFileAssociation(string extension, string progID) 
        { 
            // Create extension subkey 
            SetValue(Registry.ClassesRoot, extension, progID); 
 
            // Create progid subkey 
            string assemblyFullPath = System.Reflection.Assembly.GetExecutingAssembly().Location.Replace("/", @"\"); 
            StringBuilder sbShellEntry = new StringBuilder(); 
            sbShellEntry.AppendFormat("\"{0}\" \"%1\"", assemblyFullPath); 
            SetValue(Registry.ClassesRoot, progID + @"\shell\open\command", sbShellEntry.ToString()); 
            StringBuilder sbDefaultIconEntry = new StringBuilder(); 
            sbDefaultIconEntry.AppendFormat("\"{0}\",0", assemblyFullPath); 
            SetValue(Registry.ClassesRoot, progID + @"\DefaultIcon", sbDefaultIconEntry.ToString()); 
 
            // Create application subkey 
            SetValue(Registry.ClassesRoot, @"Applications\" + Path.GetFileName(assemblyFullPath), "", "NoOpenWith"); 
        } 
 
        private static void SetValue(RegistryKey root, string subKey, object keyValue) 
        { 
            SetValue(root, subKey, keyValue, null); 
        } 
        private static void SetValue(RegistryKey root, string subKey, object keyValue, string valueName) 
        { 
            bool hasSubKey = ((subKey != null) && (subKey.Length > 0)); 
            RegistryKey key = root; 
 
            try 
            { 
                if (hasSubKey) key = root.CreateSubKey(subKey); 
                key.SetValue(valueName, keyValue); 
            } 
            finally 
            { 
                if (hasSubKey && (key != null)) key.Close(); 
            } 
        } 
    } 

 

 

 

string extension = ".def"; 
            string title = "something here"; 
            string extensionDescription = "some description"; 
            FileRegistrationHelper.SetFileAssociation( 
              extension, title + "." + extensionDescription);