private void dataGridView1_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            DataGridViewRow dr = dataGridView1.SelectedRows[0];

            this.Hide();
            frmSemester frm = new frmSemester();

            // or simply use column name instead of index
            //dr.Cells["id"].Value.ToString();
            frm.Show();
            frm.txtSemesterID.Text   = dr.Cells[0].Value.ToString();
            frm.txtSemesterName.Text = dr.Cells[1].Value.ToString();
            frm.cmbCourse.Text       = dr.Cells[2].Value.ToString();
            if (label1.Text == "Admin")
            {
                frm.label1.Text              = label1.Text;
                frm.btnDelete.Enabled        = true;
                frm.btnUpdate_record.Enabled = true;
                frm.btnSave.Enabled          = false;
                frm.txtSemesterName.Focus();
            }
            else
            {
                frm.label1.Text              = label1.Text;
                frm.btnDelete.Enabled        = false;
                frm.btnUpdate_record.Enabled = false;
                frm.btnSave.Enabled          = false;
                frm.txtSemesterName.Focus();
            }
        }
        private void semesterToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmSemester frm = new frmSemester();

            if (UserType.Text == "Admin")
            {
                frm.label1.Text = UserType.Text;

                frm.Show();
            }
            else
            {
                frm.label1.Text = UserType.Text;

                frm.Show();
            }
        }