public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Departments.Add(Department);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (id == null)
{
return(NotFound());
}
Course = await _context.Courses
.AsNoTracking()
.FirstOrDefaultAsync(m => m.CourseID == id);
if (Course != null)
{
_context.Courses.Remove(Course);
await _context.SaveChangesAsync();
}
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (!ModelState.IsValid)
{
return(Page());
}
var courseToUpdate = await _context.Courses.FindAsync(id);
if (await TryUpdateModelAsync <Course>(
courseToUpdate,
"course",
c => c.Credits, c => c.DepartmentID, c => c.Title))
{
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
// Select DepartmentID if TryUpdateModelAsync fails.
PopulateDepartmentsDropDownList(_context, courseToUpdate.DepartmentID);
return(Page());
}