BI Dashboard for ASP.NET Core - How to handle errors

The following example demostrates two approaches on how to handle errors in the ASP.NET Core Dashboard application:

• How to specify custom text for internal Dashboard errors
• How to throw a custom exception during a server-side processing and display the error in the Dashboard error toast

How to specify custom text for internal Dashboard errors

Files to Review

• Startup.cs
• CustomDashboardController.cs
• Index.cshtml

Description

The dashboard in this project contains invalid data connection. This example shows how to override the default text in the exception that occurs when a controller tries to load data.

1. Implement the IExceptionFilter interface to create a custom exception filter and specify a custom exception message. You can specify the displayed text depending on whether the application is in development mode.
2. Create a custom controller that uses the custom exception filter.
3. Specify the CustomDashboard controller when you configure endpoints.

How to throw a custom exception during a server-side processing and display the error in the Dashboard error toast

Files to Review

• Startup.cs
• CustomDashboardController.cs
• Index.cshtml

Description

This example shows how to throw a custom exception when a controller loads a dashboard.

1. Implement the IExceptionFilter interface to create a custom exception filter. You can specify the displayed text depending on whether the application is in development mode.
2. Create a custom controller that uses the custom exception filter.
3. Specify the CustomDashboard controller when you configure endpoints.
4. To throw an exception when the control loads a dashboard, create custom dashboard storage and override the LoadDashboard method.

Documentation

• Handle and Log Server-Side Errors in ASP.NET Core

More Examples

• ASP.NET MVC Dashboard - How to handle errors
• ASP.NET Web Forms Dashboard - How to handle errors