Determine ASP.NET Core environment name in the views

c# asp.net-core asp.net-core-mvc environment-variables
Nikolay Kostov picture Nikolay Kostov · Nov 15, 2015 · Viewed 16.2k times · Source

The new ASP.NET Core framework gives us ability to execute different html for different environments:

<environment names="Development">
    <link rel="stylesheet" href="~/lib/material-design-lite/material.css" />
    <link rel="stylesheet" href="~/css/site.css" />
</environment>
<environment names="Staging,Production">
    <link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/3.0.0/css/bootstrap.min.css"
          asp-fallback-href="~/lib/material-design-lite/material.min.css"
          asp-fallback-test-class="hidden" asp-fallback-test-property="visibility" asp-fallback-test-value="hidden"/>
    <link rel="stylesheet" href="~/css/site.css" asp-append-version="true"/>
</environment>

But how can I determine and visualize the name of the current environment in the _Layout.cshtml of an ASP.NET Core MVC web application?

For example I want to visualize the environment name (Production, Staging, Dev) as a HTML comment for debugging purposes:

<!-- Environment name: @......... -->

Answer

Kiran Challa picture Kiran Challa · Nov 15, 2015

You can inject the service IHostingEnvironment in your view by doing
@inject Microsoft.AspNetCore.Hosting.IHostingEnvironment hostingEnv
and do a @hostingEnv.EnvironmentName

Related questions

ASP.NET Core Dependency Injection error: Unable to resolve service for type while attempting to activate

I created an .NET Core MVC application and use Dependency Injection and Repository Pattern to inject a repository to my controller. However, I am getting an error: InvalidOperationException: Unable to resolve service for type 'WebApplication1.Data.BloggerRepository' while attempting to …

Read More
Getting value from appsettings.json in .net core

Not sure what am I missing here but I am not able to get the values from my appsettings.json in my .net core application. I have my appsettings.json as: { "AppSettings": { "Version": "One" } } Startup: public class Startup { private IConfigurationRoot _…

Read More
How do you create a custom AuthorizeAttribute in ASP.NET Core?

I'm trying to make a custom authorization attribute in ASP.NET Core. In previous versions it was possible to override bool AuthorizeCore(HttpContextBase httpContext). But this no longer exists in AuthorizeAttribute. What is the current approach to make a custom …

Read More