Question

Let’s say I need to create a new file whose path is “.\a\bb\file.txt”. The folder a and bb may not exist. How can I create this file in C# in which folder a and bb are automatically created if not exist?

Answer 1

This will create the file along with the folders a and bb if they do not exist

FileInfo fi = new FileInfo(@".\a\bb\file.txt");
DirectoryInfo di = new DirectoryInfo(@".\a\bb");
if(!di.Exists)
{
    di.Create();
}

if (!fi.Exists) 
{
    fi.Create().Dispose();
}