public PageList <User> UserPageList(int pageSize, int pageIndex, string userName)
{
//Expression<Func<User, bool>> expression = s => true;
//if (!string.IsNullOrEmpty(userName))
//{
// expression = expression.And(s => s.UserName == userName);
//}
var res = _userRepositories.QuerySet().Where(s => true);
if (!string.IsNullOrEmpty(userName))
{
res = res.Where(s => s.UserName == userName);
}
return(res.OrderBy(s => s.UserName).PageList(pageIndex, pageSize));
}
