protected void btnSave_Click(object sender, EventArgs e)
{
using (DefaultConnection db = new DefaultConnection())
{
Student stud = new Student();
if (!String.IsNullOrEmpty(Request.QueryString["StudentID"]))
{
Int32 StudentID = Convert.ToInt32(Request.QueryString["StudentID"]);
stud = (from d in db.Students where d.StudentID == StudentID select d).FirstOrDefault();
}
stud.LastName = txtLName.Text;
stud.FirstMidName = txtFName.Text;
stud.EnrollmentDate = Convert.ToDateTime(txtEnrollmentDate.Text);
if (String.IsNullOrEmpty(Request.QueryString["StudentID"]))
{
db.Students.Add(stud);
}
db.Students.Add(stud);
db.SaveChanges();
Response.Redirect("students.aspx");
}
}
protected void btnSave_Click(object sender, EventArgs e)
{
//connect
using (DefaultConnection db = new DefaultConnection())
{
// create a new student in memory
Student stud = new Student();
//check for a url
if (!String.IsNullOrEmpty(Request.QueryString["StudentID"]))
{
//get id from url
Int32 StudentID = Convert.ToInt32(Request.QueryString["StudentID"]);
//look up the student
stud = (from s in db.Students
where s.StudentID == StudentID
select s).FirstOrDefault();
}
// fill properties of new student
stud.LastName = txtLastName.Text;
stud.FirstMidName = txtFirstName.Text;
stud.EnrollmentDate = Convert.ToDateTime(txtDateEnrolled.Text);
//add if we have no id in the url
if (String.IsNullOrEmpty(Request.QueryString["StudentID"]))
{
stud.EnrollmentDate = System.DateTime.Now;
db.Students.Add(stud);
}
db.SaveChanges();
//redirect to students list page
Response.Redirect("students.aspx");
}
}