即使子目录不存在也如何创建文件

Question

How can I create a file even if the some sub-directories dont exist? I am aware of this Question and its answer that suggests I use Directory.CreateDirectory(path) to create both my file and its directories.

But when I attempt to create my file using Directory.CreateDirectory(path) it creates the file as a directory/folder and not as a file?

Directory.CreateDirectory (@"C:\Users\me\AppData\LocalLow\company\product\database.db");

Why is database.db a folder and not a file? Am I doing something wrong? How can I create a file even if the some sub-directories dont exist?

Answer 1

You need to specify the directory path to the CreateDirectory method, not the full file path. You can extract this from the full path using GetDirectoryName :

string filePath = @"C:\Users\me\AppData\LocalLow\company\product\database.db";
string dirPath = Path.GetDirectoryName(filePath);   
                 // gives @"C:\Users\me\AppData\LocalLow\company\product"

Directory.CreateDirectory(dirPath);
File.Create(filePath);   // can use any file API call here, such as File.Open