protected void grdDepartments_RowDeleting(object sender, GridViewDeleteEventArgs e) { //identify the department id to be deleted from the row the user selected Int32 DepartmentID = Convert.ToInt32(grdDepartments.DataKeys[e.RowIndex].Values["DepartmentID"]); //connect using (DefaultConnection db = new DefaultConnection()) { Department dep = (from d in db.Departments where d.DepartmentID == DepartmentID select d).FirstOrDefault(); //delete db.Departments.Remove(dep); db.SaveChanges(); //refresh the grid GetDepartments(); } }
protected void grdStudents_RowDeleting(object sender, GridViewDeleteEventArgs e) { //identify the student id to be deleted from the row the user selected Int32 StudentID = Convert.ToInt32(grdStudents.DataKeys[e.RowIndex].Values["StudentID"]); //connect using (DefaultConnection db = new DefaultConnection()) { Student stud = (from s in db.Students where s.StudentID == StudentID select s).FirstOrDefault(); //delete db.Students.Remove(stud); db.SaveChanges(); //refresh the grid GetStudents(); } }
protected void btnSave_Click(object sender, EventArgs e) { //connect to server using (DefaultConnection db = new DefaultConnection()) { //Create a new student_details in memory Student stud = new Student(); Int32 StudentID = 0; //check for a url if (!String.IsNullOrEmpty(Request.QueryString["StudentID"])) { //get the id from the url StudentID = Convert.ToInt32(Request.QueryString["StudentID"]); //look up the student stud = (from s in db.Students where s.StudentID == StudentID select s).FirstOrDefault(); } //Fill the properties of the new student stud.LastName = txtLastName.Text; stud.FirstMidName = txtFirstMidName.Text; stud.EnrollmentDate = Convert.ToDateTime(txtEnrollmentDate.Text); //add if we have no id in the url if (StudentID == 0) { db.Students.Add(stud); } //save the new student db.SaveChanges(); //redirect to the students list page Response.Redirect("students.aspx"); } }
protected void btnSave_Click(object sender, EventArgs e) { //connect to server using (DefaultConnection db = new DefaultConnection()) { //Create a new department_details in memory Department dep = new Department(); Int32 DepartmentID = 0; //check for a url if (!String.IsNullOrEmpty(Request.QueryString["DepartmentID"])) { //get the id from the url DepartmentID = Convert.ToInt32(Request.QueryString["DepartmentID"]); //look up the department dep = (from d in db.Departments where d.DepartmentID == DepartmentID select d).FirstOrDefault(); } //Fill the properties of the new department dep.Name = txtName.Text; dep.Budget = Convert.ToDecimal(txtBudget.Text); //add if we have no id in the url if (DepartmentID == 0) { db.Departments.Add(dep); } //save the new department db.SaveChanges(); //redirect to the departments list page Response.Redirect("departments.aspx"); } }