How can we done Custom Error Page in MVC?

The HandleErrorAttribute allows you to use a custom page for this error. First you need to update your web.config file to allow your application to handle custom errors.

1. <system.web>  
2.     <customErrors mode=“On”>  
3. </system.web>  

Then, your action method needs to be marked with the atttribute.

1. [HandleError]  
2. public class HomeController: Controller  
3. {  
4.     [HandleError]  
5.     publicActionResultThrowException()  
6.     {  
7.         throw new ApplicationException();  
8.     }  
9. }  

By calling the ThrowException action, this would then redirect the user to the default error page. In our case though, we want to use a custom error page and redirect the user there instead.So, let’s create our new custom view page.
 

 
Next, we simply need to update the HandleErrorAttribute on the action method.

1. [HandleError]  
2. public class HomeController: Controller   
3. {  
4.     [HandleError(View = “CustomErrorView”)]  
5.     publicActionResultThrowException()   
6.     {  
7.         throw new ApplicationException();  
8.     }  
9. }