protected void btnUpdate_Click(object sender, EventArgs e)
        {
            Student objstudent = new Student();
            objstudent.studentID = txtbxID.Text;
            objstudent.studentName = txtbxStudentName.Text;
            objstudent.fatherName = txtbxFatherName.Text;
            objstudent.motherName = txtbxMotherName.Text;
            objstudent.address = txtbxaddress.Text;
            objstudent.guardianName = txtbxGuardianName.Text;
            objstudent.studentClass = txtbxStudentClass.Text;
            objstudent.section = txtbxSection.Text;
            objstudent.roll = txtbxRoll.Text;
            objstudent.addmissionYar = txtbxAdmissionYar.Text;
            objstudent.phoneNo = txtbxPhoneNo.Text;
            objstudent.gender = DropDownListGender.Text;

            StudentDal sd = new StudentDal();
            bool status = sd.UpdateStudentInfo(objstudent);
            if (status)
            {
                lblMessage.Text = "Data Updated Successfully";
                lblMessage.ForeColor = Color.Green;
                lblMessage.Font.Size = 12;
            }

            else
            {
                lblMessage.Text = "Data Update Failed";
                lblMessage.ForeColor = Color.Red;
                lblMessage.Font.Size = 12;
            }

            Response.Redirect("StudentInfo.aspx");
        }