private void button2_Click(object sender, EventArgs e)
        {
            BOL b = new BOL();

            b.Mobile = mobTxt.Text;
            dataGridView1.DataSource = b.DataBindByMobileNo("spGetStudentByMobile");
        }
        private void Insertbtn_Click(object sender, EventArgs e)
        {
            BOL b = new BOL();

            b.StudentId = StudentIdTxt.Text;
            b.FirstName = FirstNameTxt.Text;
            b.LastName  = LastNameTxt.Text;
            b.age       = Convert.ToInt16(AgeTxt.Text);
            b.Mobile    = mobTxt.Text;
            b.Mail      = MailTxt.Text;

            b.Insert("spInsertStudentInformation");
        }
        private void button1_Click(object sender, EventArgs e)
        {
            BOL b = new BOL();

            dataGridView1.DataSource = b.DataBind("spGetAllStudentReg");
        }