// 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",
// s => s.FirstMidName, s=> s.LastName, s=> s.EnrollmentDate)){
// _context.Students.Add(emptyStudent);
// await _context.SaveChangesAsync();
// return RedirectToPage("./Index");
//}
//return Page();
//SetValues 方法通过从另一个 PropertyValues 对象读取值来设置此对象的值。 SetValues 使用属性名称匹配。
//视图模型类型不需要与模型类型相关，它只需要具有匹配的属性。
//使用 StudentVM 时需要更新 Create.cshtml 才能使用 StudentVM 而非 Student。
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 entry = _context.Add(new Student());
entry.CurrentValues.SetValues(StudentVM);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync()
{
//W/o StudentVM this function is vulnerable to overposting attacks
//Overposting = adding extra fields to the POST request
if (!ModelState.IsValid)
{
return(Page());
}
var entry = _context.Add(new Student());
//This ensures only expected fields are updated
entry.CurrentValues.SetValues(StudentVM);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
//[BindProperty]
// public StudentVM StudentVM { get; set; }
// To protect from overposting attacks, 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());
}
var entry = _context.Add(new Student());
entry.CurrentValues.SetValues(Student);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
/* TryUpdateModel
*
* 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();
*
* /* original
*
* if (!ModelState.IsValid)
* {
* return Page();
* }
*
* _context.Students.Add(Student);
* 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()
{
//if (!ModelState.IsValid)
//{
// return Page();
//}
//_context.Students.Add(Student);
//await _context.SaveChangesAsync();
//return RedirectToPage("./Index");
/*
*
*
*/
//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();
if (!ModelState.IsValid)
{
return(Page());
}
var entry = _context.Add(new Student());
entry.CurrentValues.SetValues(Student);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
// To protect from overposting attacks, 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.Students.Add(Student);
// await _context.SaveChangesAsync();
//var emptyStudent = new Student ();
//使用 PageModel 中 PageContext 属性的已发布的表单值
//过多发布
// if (await TryUpdateModelAsync<Student> (
// emptyStudent,
// "student", // Prefix for form value.
// //仅更新列出的属性
// s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate)) {
// _context.Students.Add (emptyStudent);
// await _context.SaveChangesAsync ();
// return RedirectToPage ("./Index");
// }
var entry = _context.Add(new Student());
//SetValues 方法通过从另一个 PropertyValues 对象读取值来设置此对象的值。 SetValues 使用属性名称匹配。
//视图模型类型不需要与模型类型相关，它只需要具有匹配的属性。
entry.CurrentValues.SetValues(StudentVM);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}