我有一些 ASP.NET MVC 方法，其中有很多共同點。所以我嘗試編寫一種通用方法來消除代碼重用，但沒有收到結果。你能表明問題出在哪里嗎？// 初始代碼： public ActionResult Details(int? id) { if (id == null) return new HttpStatusCodeResult(HttpStatusCode.BadRequest); Product product = db.Products.Find(id); if (product == null) return HttpNotFound(); return View(product); }[HttpGet] public ActionResult Edit(int? id) { if (id == null) return new HttpStatusCodeResult(HttpStatusCode.BadRequest); Product product = db.Products.Find(id); if (product == null) return HttpNotFound(); return View(product); }[HttpGet] public ActionResult Delete (int? id) { if (id == null) return new HttpStatusCodeResult(HttpStatusCode.BadRequest); Product product = db.Products.Find(id); if (product == null) return HttpNotFound(); return View(product); }// 最終代碼：public void Details(int? id) { Common(id); }[HttpGet]public void Edit(int? id) { Common(id); }[HttpGet]public void Delete (int? id) { Common(id); }public ActionResult Common(int? Id) { if (Id == null) return new HttpStatusCodeResult(HttpStatusCode.BadRequest); Product product = db.Products.Find(Id); if (product == null) return HttpNotFound(); return View(product); }輸出時出現空白屏幕
1 回答
翻閱古今
TA貢獻1780條經驗 獲得超5個贊
您無意或有意地將調用者更改為 return void。呼叫者的簽名不應更改。他們仍然應該返回ActionResults：
public ActionResult Details(int? id) {
return Common(id);
}
[HttpGet]
public ActionResult Edit(int? id) {
return Common(id);
}
[HttpGet]
public ActionResult Delete (int? id) {
return Common(id);
}
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