gistfile1.cs

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        comboBox1.DataSource = Enum.GetValues(typeof(MyEnum));
    }

    private void comboBox1_SelectedValueChanged(object sender, EventArgs e)
    {
        MyEnum value = (MyEnum)(((ComboBox)sender).SelectedItem);
        label1.Text = value.ToString();
    }
}