To create, move and delete directories in C#, the System.IO.Directory class has methods.
Firstly, import the System.IO namespace.
Now, use the Director.CreateDirectory() method to create a directory in the specified path −
string myDir = @"D:\NEW";
if (!Directory.Exists(myDir)) {
Directory.CreateDirectory(myDir);
}In the same way, you can create a sub-directory −
string mysubdir = @"C:\NEW\my\"; Directory.CreateDirectory(mysubdir);