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
}