/// <summary>改变用户的用户组</summary>
/// <param name="sourceGroupId"></param>
/// <param name="targetGroupId"></param>
public static void ChangeAllUserGroupId(int sourceGroupId, int targetGroupId)
{
//BBX.Data.UserGroups.ChangeAllUserGroupId(sourceGroupId, targetGroupId);
var list = User.FindAllWithCache(User._.GroupID, sourceGroupId);
list.SetItem(User._.GroupID, targetGroupId);
list.Save();
}