Pass ComboBox items as Constructor Param

Hi
Could you please let me know how I can pass a combobox items as constructor parameter?
As you can see from the codes I have a combobox which is loaded by enum FilmType.now I want to create a movie object by constructor Movie() like:
Movie film = new Movie(textBox1.Text, comboBox1.SelectedItem.ToString());
but I can not convert the item type to enum type!
I Have following Classes:

Code:

//======================================= Movie.cs
 public class Movie
    {
        public enum FilmType
        {
            Action,
            Comedy,
            Horor,
        }
        private string title;
        private FilmType type;

        public Movie(string title, FilmType type)
        {
            this.title = title;
            this.type = type;
        }
        public Movie() { }

        public string Title
        {
            get { return title; }
            set { this.title = value; }
        }
        public FilmType MovieType
        {
            get { return type; }
            set { this.type = value; }
        }
        public override string ToString()
        {
            return Title;
        }
    }
and I have a Form application as below:
//================================== Form1.cs
 public partial class Form1 : Form
    {
       
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Movie film = new Movie(textBox1.Text, comboBox1.SelectedItem.ToString()); 
            istBox3.Items.Add(film); 
            textBox1.Clear();
            textBox1.Select();
            comboBox1.SelectedIndex = -1;
            
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            {
                foreach (string movieType in Enum.GetNames(typeof(Movie.FilmType)))
                {
                    comboBox1.Items.Add(movieType);
                }
            }
        }
    }
//========================================================