protected void btnSubmit_Click(object sender, EventArgs e)
{
var connectionString = ConfigurationManager.ConnectionStrings["connection"].ConnectionString;
_studentService = new Student(connectionString);
_studentEnrollmentNumber = Convert.ToInt32(txtStudentId.Text);
if (_studentService.SearchStudent(_studentEnrollmentNumber))
{
Response.Redirect(String.Format("UpdateStudent.aspx?RollNo={0}",_studentEnrollmentNumber));
}
else
Response.Redirect("HomePage.aspx");
}