There is a newer version of this package available.
See the version list below for details.
dotnet add package --version 1.0.5
NuGet\Install-Package -Version 1.0.5
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="" Version="1.0.5" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add --version 1.0.5
#r "nuget:, 1.0.5"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install as a Cake Addin
#addin nuget:?

// Install as a Cake Tool
#tool nuget:?

CircleCI NuGet Badge License: MIT Book session on Codementor is a zero-dependency module that loads environment variables from a .env environment variable file into System.Environment. Please feel free to create issues with feature requests and raise bugs there too.


Big ups to those who have contributed to this library. 👏

@bolorundurowb @joliveros @vizeke @merqlove @tracker1 @NaturalWill



First install the library as a dependency in your application from nuget



dotnet add package

or for paket

paket add

Create a file with no filename and an extension of .env.

A sample .env file would look like this:


in the Startup.cs file or as early as possible in your code add the following:




the values saved in your .env file would be avaibale in your application and can be accessed via

Environment.GetEnvironmentVariable("DB_HOST"); // would output 'localhost'

Using with DI (IServiceCollection)

If using with ASP.NET Core or any other system that uses IServiceCollection for its dependency injection, in the Startup.cs file

public void ConfigureServices(IServiceCollection services)

    // configure dotenv
    services.AddEnv(builder => {

With this, your application would have the env file variables imported.



Default: true

You can specify if you want the library to error out if any issue arises or fail silently.

DotEnv.Config(false); //fails silently

Default: .env

You can specify a custom path if your file containing environment variables is named or located differently.

DotEnv.Config(true, "/custom/path/to/your/env/vars");

Default: Encoding.Default

You may specify the encoding of your file containing environment variables using this option.

DotEnv.Config(true, ".env", Encoding.Unicode);
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.6 is compatible.  netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (19)

Showing the top 5 NuGet packages that depend on

Package Downloads

Commonly used tooling for dotnetcore, including configuration management, logging, etc.


CodeZero is a set of common implementations to help you implementing Clean Architecture, DDD, CQRS, Specification Patterns and another facilities for new modern web applications is an open-source project written in .NET Core.


Injects values into config files directly or via environment variables. Can inject app settings, connection strings, or WCF client endpoints.


The Comprehensive Authentication Solution (or CasAuth) was developed to provide an opinionated way to handle user and service authentication for APIs.


MCMS Base package

GitHub repositories (3)

Showing the top 3 popular GitHub repositories that depend on

Repository Stars
Carbon-Aware SDK
Redis Stack .Net client
Tools repository leveraged by the Azure SDK team.
Version Downloads Last updated
3.1.3 328,352 11/5/2023
3.1.2 1,422,781 11/25/2022
3.1.1 713,362 10/11/2021
3.1.0 101,308 7/11/2021
3.0.0 280,341 3/19/2021
2.1.3 203,899 1/18/2021
2.1.1 177,034 5/26/2020
2.1.0 118,905 4/1/2020
2.0.1 1,818 3/27/2020
2.0.0 1,065 3/25/2020
1.0.6 393,709 6/29/2019
1.0.5 1,241 6/27/2019
1.0.4 116,792 10/21/2018
1.0.3 23,800 2/17/2018
1.0.2 1,477 1/15/2018
1.0.1 1,568 12/31/2017
1.0.0 7,287 11/22/2017

Make exception message more descriptive