void LoadSemester()
 {
     cmbSemester.Items.Clear();
     using (Maintenance maintain = new Maintenance())
     {
         maintain.GetSemester().OrderBy(o => o.Semester).ToList().ForEach(x =>
         {
             cmbSemester.Items.Add(x.Semester);
         });
     }
 }
 void dgSemester_CellClick(object sender, DataGridViewCellEventArgs e)
 {
     using (Maintenance _maintain = new Maintenance())
     {
         var value = _maintain.GetSemester().Where(x => x.ID == Convert.ToInt64(dgSemester.SelectedRows[0].Cells[0].Value)).FirstOrDefault();
         if (value != null)
         {
             txtSemester.Text = value.Semester;
             btnDelete        = SystemProperties.BtnProperties(btnDelete, true, Imagename.Delete.ToString(), Imagename._delete.ToString());
             btnEdit          = SystemProperties.BtnProperties(btnEdit, true, Imagename.Edit.ToString(), Imagename._edit.ToString());
         }
     }
 }
        void LoadSemester()
        {
            dgSemester.Rows.Clear();
            int i = 1;

            using (Maintenance _maintain = new Maintenance())
            {
                _maintain.GetSemester().OrderBy(y => y.Semester).ToList().ForEach(x =>
                {
                    dgSemester.Rows.Add(x.ID, i, x.Semester);
                    i++;
                });
            }
            ObjEnable(false);
            dgSemester.Enabled = true;
        }