I have a situation where I need to return a directory path by reading the registry settings. Registry value returns me a path in the format
%CommonProgramFiles%\System\web32.dll
while the consumer code is expecting it in the format
C:\Program Files\Common Files\System\web32.dll
How can I resolve such directory path in .net code?
You can use the Environment.GetEnvironmentVariable function:
string commonDir = Environment.GetEnvironmentVariable("CommonProgramFiles");
You can then use Path.Combine to append the rest of the path:
string fullPath = Path.Combine(commonDir, "System", "web32.dll");
Another option is to use Environment.ExpandEnvironmentVariables. This will replace all environment variables with their values:
string fullPath = Environment.ExpandEnvironmentVariables("%CommonProgramFiles%\System\web32.dll");