public async Task <IActionResult> OnPostAsync(int id)
{
if (!ModelState.IsValid)
{
return(Page());
}
var departmentToUpdate = await _context.Departments
.Include(i => i.Administrator)
.FirstOrDefaultAsync(m => m.DepartmentID == id);
if (departmentToUpdate == null)
{
return(HandleDeletedDepartment());
}
_context.Entry(departmentToUpdate)
.Property("RowVersion").OriginalValue = Department.RowVersion;
if (await TryUpdateModelAsync <Department>(
departmentToUpdate,
"Department",
s => s.Name, s => s.StartDate, s => s.Budget, s => s.InstructorID))
{
try
{
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
catch (DbUpdateConcurrencyException ex)
{
var exceptionEntry = ex.Entries.Single();
var clientValues = (Department)exceptionEntry.Entity;
var databaseEntry = exceptionEntry.GetDatabaseValues();
if (databaseEntry == null)
{
ModelState.AddModelError(string.Empty, "Unable to save. " +
"The department was deleted by another user.");
return(Page());
}
var dbValues = (Department)databaseEntry.ToObject();
await setDbErrorMessage(dbValues, clientValues, _context);
// Save the current RowVersion so next postback
// matches unless an new concurrency issue happens.
Department.RowVersion = (byte[])dbValues.RowVersion;
// Clear the model error for the next postback.
ModelState.Remove("Department.RowVersion");
}
}
InstructorNameSL = new SelectList(_context.Instructors,
"ID", "FullName", departmentToUpdate.InstructorID);
return(Page());
}
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see https://aka.ms/RazorPagesCRUD.
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Departments.Add(Department);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see https://aka.ms/RazorPagesCRUD.
public async Task <IActionResult> OnPostAsync()
{
var emptyStudent = new Student();
if (await TryUpdateModelAsync <Student>(
emptyStudent,
"student", // Prefix for form value.
s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate))
{
_context.Students.Add(emptyStudent);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
return(Page());
}
public async Task <IActionResult> OnPostAsync(int id)
{
var studentToUpdate = await _context.Students.FindAsync(id);
if (studentToUpdate == null)
{
return(NotFound());
}
if (await TryUpdateModelAsync <Student>(
studentToUpdate,
"student",
s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate))
{
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
return(Page());
}