I am doing validation in controller part action method and I got stuck at a point that to give validation for name by checking the condition that the name should not appear already in the table. I have tried many conditions but always getting some error. can anyone please help me to find solution for my problem ???
controller
[HttpPost]
[ValidateAntiForgeryToken]
public async Task Create([Bind(Include = "Id,Name")] Student student)
{
TempData["name"] = student.Name;
var show = db.Students.Select(e => e.Name).ToList();
if (show == TempData["name"])
{
ModelState.AddModelError("Name", "Name already exists");
}
f (ModelState.IsValid)
{
db.Students.Add(student);
await db.SaveChangesAsync();
return RedirectToAction("Index");
}
return View(student);
}
this is my controller part where I nned to give validation
Manas MohapatraPosted Apr 24, 2017, 1:35 AM