DynamicEnv 1.0.3

dotnet add package DynamicEnv --version 1.0.3                
NuGet\Install-Package DynamicEnv -Version 1.0.3                
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="DynamicEnv" Version="1.0.3" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add DynamicEnv --version 1.0.3                
#r "nuget: DynamicEnv, 1.0.3"                
#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 DynamicEnv as a Cake Addin
#addin nuget:?package=DynamicEnv&version=1.0.3

// Install DynamicEnv as a Cake Tool
#tool nuget:?package=DynamicEnv&version=1.0.3                

DynamicEnv

NuGet Build & Publish License

.NET Standard 2.0 library that exposes environment variable interactions through a Dynamic object.

Getting Started

Install DynamicEnv from NuGet. E.g. from Visual Studio's Package Manager Console:

Install-Package DynamicEnv

Usage

You can then use the Env class to access environment variables succinctly via a dynamic object. You can use either dynamic member syntax or indexes (similar to a string dictionary, although this class does not currently implement any dictionary interface).

First you need an instance of Env:

using DynamicEnv;

//...

dynamic env = new Env();

//Or explicitly specify the environment target (the default when none is
//specified, like the line above, is EnvironmentVariableTarget.Process)
env = new Env(EnvironmentVariableTarget.Process)

//Or you can use one of the pre-initialized static instances:
env = Env.Machine; //Targets machine-level environment variables (Windows systems only)
env = Env.User;    //Targets user-level environment variables (Windows systems only)
env = Env.Process; //Targets process-level environment variables (this is the default)

Read an environment variable; note, their names may be case sensitive on some platforms (Linux/Mac):

string path;
path = env.PATH;
path = env["PATH"];

If the environment variable doesn't exist, then it'll return a null:

string empty;
empty = env.ThisVarDoesntExist;
empty = env["ThisVarDoesntExist"];
Assert.True(empty == null);

You can also set environment variables like this:

env.DataRoot = @"C:\Data";
env["DataRoot"] = @"C:\Data";

Deleting/clearing an environment variable is typically done by setting as null:

env.DataRoot = null;
env["DataRoot"] = null;

Enumerate environment variable names:

IEnumerable<string> varNames = env.GetDynamicMemberNames();
foreach (string name in varNames) {
    string val = env[name];
    Console.WriteLine($"{name}: {val}");
}

Errors

An unsupported value type (currently anything other than String) throws an ArgumentException:

env.Test = 454;

An unsupported index type (currently anything other than String) throws an IndexOutOfRangeException:

env[12] = "this won't work!";

And finally here's a gotcha that causes a RuntimeBinderException because .NET can't determine whether the null result is a string or a char[] parameter to the Console.WriteLine(...) method:

Console.WriteLine(env.ThisVarDoesntExist);

You can work around this by casting to string:

Console.WriteLine($"{env.ThisVarDoesntExist}");
Console.WriteLine((string)env.ThisVarDoesntExist);
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 netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard 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 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.
  • .NETStandard 2.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.0.3 194 8/10/2023
1.0.3-ci0002 107 8/10/2023
1.0.3-ci0001 106 8/10/2023
1.0.2 133 8/10/2023
1.0.2-ci0006 122 8/10/2023
1.0.1 502 4/23/2020
1.0.0 440 4/22/2020