Here is the old way:

    private void EnableControls()

    {

        lvMovieList.Visible = true;

        btnSearch.Enabled = true;

        btnRescan.Enabled = true;

        txtSearch.Enabled = true;

        btnTV.Enabled = true;

        pnlAdvancedSearch.Enabled = true;

        tcFindMovies.Enabled = true;

    }

    private void DisableControls()

    {

        lvMovieList.Visible = false;

        btnSearch.Enabled = false;

        btnRescan.Enabled = false;

        txtSearch.Enabled = false;

        btnTV.Enabled = false;

        pnlAdvancedSearch.Enabled = false;

        tcFindMovies.Enabled = false;

    }

Here is the better improved way: 

    private void ChangeControls(bool onOff)

    {

        lvMovieList.Visible = onOff;

        btnSearch.Enabled = onOff;

        btnRescan.Enabled = onOff;

        txtSearch.Enabled = onOff;

        btnTV.Enabled = onOff;

        pnlAdvancedSearch.Enabled = onOff;

        tcFindMovies.Enabled = onOff;

    }

So now when you want to disable controls you pass in false and pass in true when you want to enable the controls.

E.G: ChangeControls(true);

If you need one control set to true when disabling all other controls.

Then you can do this:

btnCancel.Enabled = onOff ? false : true;

I know this is pretty basic stuff but im sure some people out there will gain from reading it.