public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
var entry = _context.Add(new Student());
entry.CurrentValues.SetValues(StudentVM);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
/*var emptyStudent = new Student();
* if(await TryUpdateModelAsync<Student>(
* emptyStudent,
* "student", // Prefix for entered on form values
* s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate))
* {
* _context.Student.Add(emptyStudent);
* await _context.SaveChangesAsync();
* return RedirectToPage("./Index");
* }
* return null; */
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Add(Student);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
var entry = _context.Add(new Student());
entry.CurrentValues.SetValues(StudentVM);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
//public async Task<IActionResult> OnPostAsync()
//{
// if (!ModelState.IsValid)
// {
// return Page();
// }
// var emptyStudent = new Student();
// if (await TryUpdateModelAsync<Student>(
// emptyStudent,
// "student", // 是用于查找值的前缀。 该自变量不区分大小写
// s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate))
// {
// _context.Student.Add(emptyStudent);
// await _context.SaveChangesAsync();
// return RedirectToPage("./Index");
// }
// return null;
//}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
var entry = _context.Add(new Student());
//SetValues 使用属性名称匹配。 视图模型类型（StudentVM）不需要与模型类型（Student）相关，它只需要具有匹配的属性。
entry.CurrentValues.SetValues(StudentVM);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
//overposting protection version 2
var newStudent = _context.Add(new Student());
newStudent.CurrentValues.SetValues(StudentVM);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> Create([Bind("FirstMidName,HireDate,LastName,OfficeAssignment")] Instructor instructor, string[] selectedCourses)
{
if (selectedCourses != null)
{
instructor.CourseAssignments = new List <CourseAssignment>();
foreach (var course in selectedCourses)
{
var courseToAdd = new CourseAssignment {
InstructorID = instructor.ID, CourseID = int.Parse(course)
};
instructor.CourseAssignments.Add(courseToAdd);
}
}
if (ModelState.IsValid)
{
_context.Add(instructor);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
PopulateAssignedCourseData(instructor);
return(View(instructor));
}
