Saving a file and automatically create directories

Question

I am concatenating a number of variables and I want to save that string as a file path.

Is there a way it will automatically create all appropriate directories if they don't exist without having to check "if exists" on each one

For example.

"C:\" + a + "\" + b+ "\" + d + "\" + d + ".txt" 

Answer 1

Use new FileInfo(path).Directory.Create().

(This creates anything in the hierarchy that's required. If the directory already exists it does nothing.)