winform开发中绑定combox到枚举

开发中需要根据下拉框的选择处理一些业务逻辑，使用ID值或Text值都不利于代码维护，所以可以写个扩展方法绑定到枚举上。

 public static class Extensions
    {

        /// <summary>
        /// 绑定ComboBoxEx数据源到枚举类型
        /// </summary>
        /// <param name="cmb"></param>
        /// <param name="enumType"></param>
        /// <param name="selectIndex"></param>
        public static void BindToEnumName(this ComboBox cmb, Type enumType, int selectIndex = 0)
        {
            cmb.DataSource = Enum.GetNames(enumType);
        }

        /// <summary>
        ///  获取选择项
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="cmb"></param>
        /// <returns></returns>
        public static T GetSelectedItemToEnum<T>(this ComboBox cmb)
        {
            return (T)Enum.Parse(typeof(T), cmb.SelectedItem.ToString(), false);
        }

        /// <summary>
        /// 设置选定项
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="cmb"></param>
        /// <param name="t"></param>
        public static void SetSelectedItemToEnum<T>(this ComboBox cmb, T t)
        {
            cmb.SelectedItem = t.ToString();
        }

    }

调用方法：

        private void button1_Click(object sender, EventArgs e)
        {
            this.comboBox1.BindToEnumName(typeof(TypeEnum));
        }

        private void button2_Click(object sender, EventArgs e)
        {
            var type = this.comboBox1.GetSelectedItemToEnum<TypeEnum>();
            this.textBox1.Text = type.ToString() + ":" + (int)type;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.comboBox1.SetSelectedItemToEnum(this.textBox2.Text); 
        }

        private void button4_Click(object sender, EventArgs e)
        {
            this.comboBox1.SetSelectedItemToEnum<TypeEnum>((TypeEnum)(int.Parse(this.textBox3.Text)));
        }

        public enum TypeEnum
        {
            类型1 = 1,
            类型2 = 2
        }