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[Source] asp.net Customize 404 in MVC4

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Posted on 3/22/2019 10:20:59 AM | | | |
There are certainly many ways to define a 404. Different methods take different forms and experience them differently. There are 2 types of information below

Method 1:

1. Find the node "system.web" xx... xx〈System.web〉 enables the 404 configuration

2. Define a controllers Error (this is up to you), in action as follows

public ActionResult Index()
{
Response.Status = "404 Not Found";
Response.StatusCode = 404;
return View();
}
This defaults to adding ?aspxerrorpath=/ eg:http://localhost/Error?? aspxerrorpath=/123456 Therefore, it is not recommended to try it

Method 2:

Open the Global.asax file
Defining Error Direction Addresses (Controller/Action)


Added a corresponding controller method


Call it a day.. Of course, configuring this is the final step in the end of the project. Otherwise, you won't see any effect when you debug.





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 Landlord| Posted on 3/22/2019 10:22:52 AM |
According to the configuration of method 2, there is no problem in testing locally, and there will be problems when deployed to the official environment IIS, or the 404 page of IIS is displayed, as shown in the figure below:


It is said that Response.StatusCode = 404 is removed; It's okay to remove it
 Landlord| Posted on 3/22/2019 10:38:49 AM |
The final solution is as follows:


web.config configuration filesystem.webServerThe following nodes have been added:

Controller Code:



For non-existent paths, the 404 status code can be correctly corresponded to which is beneficial for SEO.
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