How to read a user environment variable in C#?

问题

How can I read a user specific environment variable? I know how to get a system wide one, like

Environment.GetEnvironmentVariable("SOMETHING");

Thanks in advance!

回答1:

Use the other overload of the Environment.GetEnvironmentVariable Method that lets you specify the EnvironmentVariableTarget.

Environment.GetEnvironmentVariable(variable, target);

target can be:
EnvironmentVariableTarget.Process,
EnvironmentVariableTarget.User,
EnvironmentVariableTarget.Machine.

回答2:

It's the same method, just set the second parameter to be User as:

System.Environment.GetEnvironmentVariable("varName", EnvironmentVariableTarget.User);

回答3:

Use second overload of GetEnvironmentVariable which let's you specify EnvironmentVariableTarget.

回答4:

var UserName = Environment.GetEnvironmentVariable("username");

来源：https://stackoverflow.com/questions/3403895/how-to-read-a-user-environment-variable-in-c