Environment Variables are set of values that are used for running special processes or special system files.. for example when you install java or python you must make a new environment variable in order to compile and run java or python programs that's all I know about it. Without wasting anytime let's get into it...
This is a simple code that will show you the environment variables..
For VB.NET
Dim EV As String = Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.Process Or EnvironmentVariableTarget.Machine) MsgBox(EV)
For C#
'you must add these namespaces using System; using System.IO; using System.Windows.Forms; using Microsoft.Win32; 'add this code in an event string EV = Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.Process | EnvironmentVariableTarget.Machine); MessageBox.Show(EV);
The "PATH" defines the environment variable name so if you want to get another ones just change PATH with the variable name.