これはMVCにとって最良の方法ではない可能性があります（https://stackoverflow.com/a/9461386/5869805）
以下は、Application_Errorでビューをレンダリングし、http応答に書き込む方法です。リダイレクトを使用する必要はありません。これにより、サーバーへの2番目の要求が防止されるため、ブラウザーのアドレスバーのリンクは同じままになります。これは良いか悪いか、それはあなたが何をしたいかに依存します。
Global.asax.cs
protected void Application_Error()
{
var exception = Server.GetLastError();
// TODO do whatever you want with exception, such as logging, set errorMessage, etc.
var errorMessage = "SOME FRIENDLY MESSAGE";
// TODO: UPDATE BELOW FOUR PARAMETERS ACCORDING TO YOUR ERROR HANDLING ACTION
var errorArea = "AREA";
var errorController = "CONTROLLER";
var errorAction = "ACTION";
var pathToViewFile = $"~/Areas/{errorArea}/Views/{errorController}/{errorAction}.cshtml"; // THIS SHOULD BE THE PATH IN FILESYSTEM RELATIVE TO WHERE YOUR CSPROJ FILE IS!
var requestControllerName = Convert.ToString(HttpContext.Current.Request.RequestContext?.RouteData?.Values["controller"]);
var requestActionName = Convert.ToString(HttpContext.Current.Request.RequestContext?.RouteData?.Values["action"]);
var controller = new BaseController(); // REPLACE THIS WITH YOUR BASE CONTROLLER CLASS
var routeData = new RouteData { DataTokens = { { "area", errorArea } }, Values = { { "controller", errorController }, {"action", errorAction} } };
var controllerContext = new ControllerContext(new HttpContextWrapper(HttpContext.Current), routeData, controller);
controller.ControllerContext = controllerContext;
var sw = new StringWriter();
var razorView = new RazorView(controller.ControllerContext, pathToViewFile, "", false, null);
var model = new ViewDataDictionary(new HandleErrorInfo(exception, requestControllerName, requestActionName));
var viewContext = new ViewContext(controller.ControllerContext, razorView, model, new TempDataDictionary(), sw);
viewContext.ViewBag.ErrorMessage = errorMessage;
//TODO: add to ViewBag what you need
razorView.Render(viewContext, sw);
HttpContext.Current.Response.Write(sw);
Server.ClearError();
HttpContext.Current.Response.End(); // No more processing needed (ex: by default controller/action routing), flush the response out and raise EndRequest event.
}
見る
@model HandleErrorInfo
@{
ViewBag.Title = "Error";
// TODO: SET YOUR LAYOUT
}
<div class="">
ViewBag.ErrorMessage
</div>
@if(Model != null && HttpContext.Current.IsDebuggingEnabled)
{
<div class="" style="background:khaki">
<p>
<b>Exception:</b> @Model.Exception.Message <br/>
<b>Controller:</b> @Model.ControllerName <br/>
<b>Action:</b> @Model.ActionName <br/>
</p>
<div>
<pre>
@Model.Exception.StackTrace
</pre>
</div>
</div>
}