Path.GetRandomFileName. This C# method from System.IO generates random file names. We can use these to store data in a secret (or unique) way.
Random filename benefits. The filename does not conflict with other files. It will not be corrupted by other programs. We can write the file and expect it to be left alone.
First, there are many ways to generate random strings. You could develop a method that populates a char array using the Random class, and then returns a string based on those numbers.
Tip The extension will be 1 dot and 3 letters, while the name will be 8 characters. All the characters are valid file name characters.
using System;
using System.IO;
class Program
{
static void Main()
{
//// Write three random files.//
WriteRandomFile();
WriteRandomFile();
WriteRandomFile();
}
static void WriteRandomFile()
{
//// Get random file name.//
string fileName = Path.GetRandomFileName();
//// Construct full path.//
string outputPath = Path.Combine("C:\\", fileName);
//// Write to screen and disk.//
Console.WriteLine(fileName);
File.WriteAllText(outputPath, "Random");
}
}m4adstid.dw2
mbhbtcen.5m1
1qtk3r5u.bka
Implementation. Internally, the Path.GetRandomFileName method gets random bytes from the cryptographic-quality random number generator RNGCryptoServiceProvider.
Next The method uses bitwise ANDs to fill a StringBuilder with characters based on those bytes.
Summary. We generated random file names to store certain kinds of data. By using Path.GetRandomFileName, you can write to files that have cryptographically-secure random names.
Dot Net Perls is a collection of tested code examples. Pages are continually updated to stay current, with code correctness a top priority.
Sam Allen is passionate about computer languages. In the past, his work has been recommended by Apple and Microsoft and he has studied computers at a selective university in the United States.
This page was last updated on May 6, 2022 (grammar).
