/// <summary>
/// 通过一个字段属性创建一个对枚举项描述的实例
/// </summary>
/// <param name="fi">字段属性实例</param>
/// <param name="enumType">枚举型</param>
/// <returns>描述枚举项的实例</returns>
/// <remarks>通过一个字段属性值创建一个枚举项描述的实例
/// <seealso cref="MCS.Library.Core.EnumItemDescriptionAttribute"/>
/// </remarks>
internal static EnumItemDescription CreateFromFieldInfo(FieldInfo fi, Type enumType)
{
EnumItemDescription eid = new EnumItemDescription();
eid.Name = fi.Name;
eid.EnumValue = (int)fi.GetValue(enumType);
eid.SortId = eid.EnumValue;
eid.FillDescriptionAttributeInfo(AttributeHelper.GetCustomAttribute <EnumItemDescriptionAttribute>(fi));
return(eid);
}
/// <summary>
/// 获得枚举项附加属性的描述信息属性
/// </summary>
/// <param name="enumItem">枚举项</param>
/// <returns>描述信息属性，若该附加属性没有定义，则返回null</returns>
/// <remarks>获得枚举项的附加属性，若该附加属性没有定义，则返回null
/// <code source="..\Framework\TestProjects\DeluxeWorks.Library.Test\Core\EnumItemDescriptionAttributeTest.cs" region = "GetAttributeTest" lang="cs" title="得到枚举项的描述信息属性" />
/// </remarks>
public static EnumItemDescriptionAttribute GetAttribute(System.Enum enumItem)
{
return(AttributeHelper.GetCustomAttribute <EnumItemDescriptionAttribute>(enumItem.GetType().GetField(enumItem.ToString())));
}