C# 枚举常用工具方法

/// <summary>
/// 获取枚举成员描述信息及名称
/// 返回:IDictionary
/// Value:描述信息
/// Key:值
/// </summary>
/// <typeparam name="T">struct类型</typeparam>
/// <returns>IDictionary</returns>
protected IDictionary<string, string> GetEnumMemberList<T>() where T : struct
{
var members = typeof(T).GetMembers().Where(s => s.MemberType == System.Reflection.MemberTypes.Field);

Dictionary<string, string> dict = new Dictionary<string, string>();

foreach (var member in members)
{
var attrs = member.GetCustomAttributes(typeof(DescriptionAttribute), false);

if (!attrs.Any())
{
continue;
}

var memberinfo = attrs[0] as DescriptionAttribute;

if (memberinfo != null)
{
dict.Add(member.Name, memberinfo.Description);
}
}

return dict;
}

/// <summary>
/// 调用方法
/// </summary>
/// <param name="selectId"></param>
/// <returns></returns>
protected List<SelectListItem> Execute(int selectId)
{
var dict = GetEnumMemberList<SharedScope>();

var list = new List<SelectListItem>();
foreach (var info in dict)
{
int value = (int)Enum.Parse(typeof(SharedScope), info.Key);
list.Add(
new SelectListItem
{
Value = value.ToString(),
Text = info.Value,
Selected = value == selectId
});
}

this.ViewData["Execute"] = list;
return list;
}