The environment tag helper is a versatile tool that allows you to include or exclude specific content in your views depending on the current environment your ASP.NET Core application is running in. This is particularly useful for scenarios where you want to: Include Development Resources: Load unminified CSS or JavaScript files during development to facilitate debugging and testing. Optimize for Production: Load minified and bundled assets in production to improve performance. Display Environment-Specific Content: Show different messages, warnings, or features based on the environment.
Syntax <environment include=”Environment1,Environment2,…”> Content to render if the environment matches any of the included environments </environment>
<environment exclude=”Environment1,Environment2,…”> Content to render if the environment does NOT match any of the excluded environments </environment> include: A comma-separated list of environment names for which the content should be rendered. exclude: A comma-separated list of environment names for which the content should not be rendered.
Environment Names Standard: Development, Staging, Production. Custom: You can also define and use your own custom environment names.
How It Works Environment Check: The <environment> tag helper reads the value of the ASPNETCORE_ENVIRONMENT environment variable to determine the current environment. Conditional Rendering: Based on the include or exclude attributes and the current environment, it either renders or skips the content within the tag helper.
In this example: The unminified site.css file is loaded only in the Development environment. The minified site.min.css file is loaded in all other environments.
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