public virtual async Task <ActionResult> GetStudetGroups(Guid groupId)
        {
            try
            {
                var std = await StudentGroupCore.GetAsync(groupId).ConfigureAwait(false);

                if (std == null)
                {
                    return(BadRequest());
                }

                return(Success());
            }
            catch (Exception ex)
            {
                LogHelper.LogException <StudentGroupController>(ex);
                return(BadRequest());
            }
        }
        public virtual async Task <ActionResult> Display(Guid Id)
        {
            var stdgrp = await StudentGroupCore.GetAsync(Id);

            return(View(stdgrp));
        }