ContextMenu

gistfile1.cs

public static class CContextMenu
{
    public static string Name
    {
        get { return "Send File Securely"; }
    }

    public static string Command
    {
        get { return string.Format("{0}\"{1}\" \"%1\"", (ApplicationDeployment.IsNetworkDeployed) ? "cmd.exe /c " : string.Empty, exePath); }
    }

    public static string exePath
    {
        get { return (ApplicationDeployment.IsNetworkDeployed) ? Path.Combine(CDeploymentInfo.AppPath, exeName) : Assembly.GetExecutingAssembly().Location; }
    }

    public static string exeName
    {
        get { return (ApplicationDeployment.IsNetworkDeployed) ? CDeploymentInfo.AppName : Assembly.GetExecutingAssembly().GetName().Name; }
    }

    public static bool IsContextMenuEnabled()
    {
        return IsContextMenuEnabled(Registry.CurrentUser, Name);
    }

    public static void EnableContextMenu()
    {
        if (!IsContextMenuEnabled(Registry.CurrentUser, Name))
            ResetContextMenu(Registry.CurrentUser, Name, Command);
    }

    public static void DisableContextMenu()
    {
        ResetContextMenu(Registry.CurrentUser, Name, string.Empty);
    }

    // http://simpcode.blogspot.com/2008/07/c-set-and-unset-auto-start-for-windows.html
    // http://stackoverflow.com/questions/4608505/c-sharp-file-assocation-access-to-the-registry-key-hkey-classes-root-is-den
    // http://support.microsoft.com/kb/257592

    private const string KeyPath = @"Software\Classes\*";
    private const string ShellToken = "shell";
    private const string CommandToken = "command";

    private static string GetContextMenuKey(string name)
    {
        return string.Format("{0}\\{1}\\{2}", KeyPath, ShellToken, name);
    }

    private static string GetContextMenuCommandKey(string name)
    {
        return string.Format("{0}\\{1}", GetContextMenuKey(name), CommandToken);
    }

    private static bool IsContextMenuEnabled(RegistryKey key, string name)
    {
        return key.OpenSubKey(GetContextMenuCommandKey(name)) != null;
    }

    private static void ResetContextMenu(RegistryKey key, string name, string command)
    {
        if (string.IsNullOrEmpty(command) && IsContextMenuEnabled(key, name))
        {
            key.DeleteSubKeyTree(GetContextMenuKey(name), false);
        }

        if (!string.IsNullOrEmpty(command) && !IsContextMenuEnabled(key, name))
        {
            key.CreateSubKey(GetContextMenuCommandKey(name)).SetValue(string.Empty, command);
        }
    }
}