C# WinForm ComboBox 枚举 选定值

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication3
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
            this.comboBox1.DropDownStyle = ComboBoxStyle.DropDownList;
        }

        [Flags]
        [Serializable]
        enum Kind
        {
            现金支付 = 0x0001,
            银行支付 = 0x0002,
        }

        private void Form2_Load(object sender, EventArgs e)
        {
            var items = new System.Collections.ArrayList(Enum.GetValues(typeof(Kind))).ToArray();

            //Items     加载 默认选择为空
            //DataSource 加载 默认选择为首项
            this.comboBox1.Items.Clear();
            this.comboBox1.Items.AddRange(items);
            //this.comboBox1.DataSource = items;
        }

     
        private void button1_Click(object sender, EventArgs e)
        {
            if (this.comboBox1.SelectedItem != null)
            {
                var item = (Kind)this.comboBox1.SelectedItem;
                int value = item.GetHashCode(); //value = 1
            }

            //设置 combobox 的值
            //Items DataSource 都适用
            this.comboBox1.SelectedItem = Kind.银行支付;
        }
    }
}