     private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'student1DataSet.stTable' table. You can move, or remove it, as needed.
            this.stTableTableAdapter.Fill(this.studentDataSet.stTable);
            dataGridView1.AutoGenerateColumns = false;
            dataGridView1.ReadOnly = true;

        }
