In a VS solution (.sln), how can I access and modify environmental variables that are created by the user?

edit

You can use the Environment class in .NET to access and modify environmental variables created by the user. The Environment class provides a method called SetEnvironmentVariable() to modify an environmental variable and a method called GetEnvironmentVariable() to access the value of an environmental variable.

Here's an example of how to modify an environmental variable called "MYVAR" in a C# console application:

string myVarValue = "mynewvalue"; // the new value you want to set
Environment.SetEnvironmentVariable("MYVAR", myVarValue);

And here's an example of how to access the value of an environmental variable called "MYVAR" in the same C# console application:

string myVarValue = Environment.GetEnvironmentVariable("MYVAR");