| Attribute | Option | Description |
|---|
| Mode | | Specifies whether custom errors are enabled, disabled, or shown only to remote clients. |
| | On | Specifies that custom errors are enabled. If no defaultRedirect is specified, users see a generic error. |
| | Off | Specifies that custom errors are disabled. This allows display of detailed errors. |
| | RemoteOnly | Specifies that custom errors are shown only to remote clients and ASP.NET errors are shown to the local host. This is the default. |
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
<customErrors mode="On"/>
</system.web>
</configuration>
- 步驟 2：設定自訂錯誤頁面 Error.cshrml
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Error</title>
</head>
<body>
<hgroup>
<h1>Error.</h1>
<h2>An error occurred while processing your request.</h2>
</hgroup>
</body>
</html>
- 步驟 3-1：Action Method 或 Conroller 加入 [HandleError]
using System.Web.Mvc;
namespace DemoError.Controllers
{
//[HandleError]
public class DemoErrorController : Controller
{
//[HandleError]
public ActionResult Index()
{
int i = 0;
int j = 10 / i;
return View();
}
}
}
- 步驟 3-2：Web Application 等級需在 Global.asax 中 Application_Start 進行設定
- 錯誤相關處理並傳回值，指出發送器是否會在某些情況下，中止工作階段和執行個體內容
- 步驟 1：設定 Web.Config
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
<customErrors mode="On">
<error redirect="~/404.html" statuscode="404">
</customErrors>
</system.web>
</configuration>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title></title>
</head>
<body>
<h1>404</h1>
</body>
</html>
- 上方為 WEB 中進行設定，如需再 IIS 上進行設定如下：
<system.webServer>
<httpErrors errorMode="Custom">
<remove statusCode="404"/>
<error statusCode="404" path="/404.html" responseMode="ExecuteURL"/>
</httpErrors>
</system.webServer>
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