Environment variables in C#

Question

I was using an environment variable which was named ABC and had a value of C:/ABC.
In my code I used @"%ABC%/file.txt" for the file path where I had created a folder on the C drive called ABC containing a file called file.txt.

However this does not recognise the environment variable.

Is there any way to make this short-cut work or do I need to manually read the System Environment variable into a separate Environment variable using Environment.GetEnvironmentVariable Method (String) within Visual Studio?

Answer 1

You can do this:

string path = Environment.ExpandEnvironmentVariables(@"%ABC%/file.txt");

http://msdn.microsoft.com/en-us/library/system.environment.expandenvironmentvariables.aspx

Answer 2

有一个恰当命名的Environment.ExpandEnvironmentVariables应该为你工作。

Answer 3

使用Environment.ExpandEnvironmentVariables ：

string expanded = Enviroment.ExpandEnvironmentVariables(input);

Answer 4

使用System.Environment class 。

System.Environment.ExpandEnvironmentVariables("")

Answer 5

尝试

 string _yourpath = Environment.ExpandEnvironmentVariables(@"%ABC%/file.txt");