Using the DirectoryInfo class, we can also create new directories in the filesystem. The following code illustrates how we create a new directory in the system:

Directory.CreateDirectory("C:\UCN Code Base\Programming-in-C-Exam-70-483-MCSD-Guide\Book70483Samples\Chapter 20"); 
 

If the preceding code is executed, it will create a subdirectory called Chapter 20 in the root folder. 

In the preceding code, we are passing an absolute path to create the directory. However, if we need to create a subdirectory in a particular directory, we can just execute the following code:

DirectoryInfo subDirectory = parentDirectory.CreateSubdirectory("NameChildDirectory");

In the preceding code, parentDirectory is the parent directory in which we want to create the subdirectory. NameChildDirectory is the name that we want to give to the child directory.