/// <summary>
/// 尝试根据组标识和值获取值描述(获取成功返回true;失败返回false)
/// </summary>
/// <param name="groupId">组标识</param>
/// <param name="value">值</param>
/// <param name="des">值描述</param>
/// <returns>获取成功返回true;失败返回false</returns>
public static bool TryGetDescriptionByValue(object groupId, object value, out string des)
{
des = null;
ValueDescriptionGroup group = GetValueDescriptionGroupById(groupId);
if (group == null)
{
return(false);
}
DisplayNameExAttribute desAtt;
if (group.TryGetValue(value, out desAtt))
{
des = desAtt.Description;
return(true);
}
var groupDescriptionAtt = group.GroupDescriptionAttribute;
if (groupDescriptionAtt != null && groupDescriptionAtt.Extend != null)
{
des = groupDescriptionAtt.Extend.GetDescription(value, group);
return(true);
}
return(false);
}
/// <summary>
/// 根据组标识和值获取值描述(获取成功返回值描述;失败抛出ArgumentException异常)
/// </summary>
/// <param name="groupId">组标识</param>
/// <param name="value">值</param>
/// <returns>值描述</returns>
public static string GetDescriptionByValue(object groupId, object value)
{
ValueDescriptionGroup group = GetValueDescriptionGroupById(groupId);
if (group == null)
{
throw new ArgumentException($"组标识\"{groupId}\"未注册");
}
DisplayNameExAttribute desAtt;
if (group.TryGetValue(value, out desAtt))
{
return(desAtt.Description);
}
var groupDescriptionAtt = group.GroupDescriptionAttribute;
if (groupDescriptionAtt != null && groupDescriptionAtt.Extend != null)
{
return(groupDescriptionAtt.Extend.GetDescription(value, group));
}
else
{
throw new ArgumentException($"组标识\"{groupId}\"值\"{value}\"对应的描述不存在");
}
}