public ActionResult ChangeRemoconInfo(ChangeRemoconInfoModel model) {
var target = db.iRemocons.Where(p => p.ID == model.id).Single();
if (ModelState.IsValid) {
System.Net.IPAddress address;
if (!System.Net.IPAddress.TryParse(model.IPAddress, out address)) {
ModelState.AddModelError("", "IPアドレスの書式が正しくありません。");
return View(model);
}
if (!Regex.IsMatch(model.IPAddress, @"[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}")) {
ModelState.AddModelError("", "IPアドレスの書式が正しくありません。");
return View(model);
}
foreach (var x in db.iRemocons) {
if (x.ID != model.id && x.IPAddress.Equals(model.IPAddress)) {
ModelState.AddModelError("", "既に登録済みのIPアドレスです。");
return View(model);
}
}
target.IPAddress = model.IPAddress;
target.Detail = model.Detail;
db.SaveChanges();
return RedirectToAction("Index", "Home");
}
// ここで問題が発生した場合はフォームを再表示します
return View(model);
}
public ActionResult ChangeRemoconInfo(int id) {
var target = db.iRemocons.Where(p => p.ID == id).Single();
ChangeRemoconInfoModel CRmodel = new ChangeRemoconInfoModel();
CRmodel.id = target.ID;
CRmodel.IPAddress = target.IPAddress;
CRmodel.Detail = target.Detail;
return View(CRmodel);
}