protected void btnSave_Click(object sender, EventArgs e)
{
try
{
using (comp2007Entities db = new comp2007Entities())
{
Course c = new Course();
Int32 CourseID = 0;
if (Request.QueryString["CourseID"] != null)
{
CourseID = Convert.ToInt32(Request.QueryString["CourseID"]);
c = (from objD in db.Courses where objD.CourseID == CourseID select objD).FirstOrDefault();
}
c.Title = txtTitle.Text;
c.Credits = Convert.ToInt32(txtCredits.Text);
c.DepartmentID = Convert.ToInt32(ddlCourses.SelectedValue);
if (CourseID == 0)
{
db.Courses.Add(c);
}
db.SaveChanges();
Response.Redirect("courses.aspx");
}
}
catch (Exception ex)
{
Response.Redirect("/error.aspx");
}
}
protected void btnSave_Click(object sender, EventArgs e)
{
try
{
using (comp2007Entities db = new comp2007Entities())
{
Student s = new Student();
Int32 StudentID = 0;
if (Request.QueryString["StudentID"] != null)
{
StudentID = Convert.ToInt32(Request.QueryString["StudentID"]);
s = (from objS in db.Students where objS.StudentID == StudentID select objS).FirstOrDefault();
}
s.LastName = txtLastName.Text;
s.FirstMidName = txtFirstName.Text;
s.EnrollmentDate = Convert.ToDateTime(txtEnrollmentDate.Text);
Enrollment en = new Enrollment();
en.CourseID = Convert.ToInt32(ddlCourses.SelectedValue);
en.StudentID = s.StudentID;
if (StudentID == 0)
{
db.Students.Add(s);
db.Enrollments.Add(en);
}
db.SaveChanges();
Response.Redirect("students.aspx");
}
}
catch (Exception ex)
{
Response.Redirect("/error.aspx");
}
}
protected void grdDepartments_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try {
Int32 selectedRow = e.RowIndex;
Int32 DepartmentID = Convert.ToInt32(grdDepartments.DataKeys[selectedRow].Values["DepartmentID"]);
using (comp2007Entities db = new comp2007Entities())
{
Department d = (from objD in db.Departments where objD.DepartmentID == DepartmentID select objD).FirstOrDefault();
db.Departments.Remove(d);
db.SaveChanges();
}
GetDepartments();
}
catch (Exception ex)
{
Response.Redirect("/error.aspx");
}
}
protected void grdStudents_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try {
Int32 StudentID = Convert.ToInt32(grdStudents.DataKeys[e.RowIndex].Values["StudentID"]);
using (comp2007Entities db = new comp2007Entities())
{
Student s = (from objS in db.Students where objS.StudentID == StudentID select objS).FirstOrDefault();
db.Students.Remove(s);
db.SaveChanges();
}
GetCourse();
}
catch (Exception ex)
{
Response.Redirect("/error.aspx");
}
}
protected void grdCourses_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try {
Int32 selectedRow = e.RowIndex;
Int32 CourseID = Convert.ToInt32(grdCourses.DataKeys[selectedRow].Values["CourseID"]);
using (comp2007Entities db = new comp2007Entities())
{
Course c = (from objC in db.Courses where objC.CourseID == CourseID select objC).FirstOrDefault();
db.Courses.Remove(c);
db.SaveChanges();
}
GetCourses();
}
catch (Exception ex)
{
Response.Redirect("/error.aspx");
}
}
protected void grdEnrollment_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
Int32 EnrollmentID = Convert.ToInt32(grdEnrollment.DataKeys[e.RowIndex].Values["EnrollmentID"]);
using (comp2007Entities db = new comp2007Entities())
{
Enrollment en = (from objE in db.Enrollments where objE.EnrollmentID == EnrollmentID select objE).FirstOrDefault();
db.Enrollments.Remove(en);
db.SaveChanges();
}
GetStudent();
}
catch (Exception ex)
{
Response.Redirect("/error.aspx");
}
}