How do I create an MD5 hash digest from a text file?

Question

Using C#, I want to create an MD5 hash of a text file. How can I accomplish this?

Update: Thanks to everyone for their help. I\'ve finally settled u

Answer 1

Here is a .NET Standard version that doesn't require reading the entire file into memory:

    private byte[] CalculateMD5OfFile(FileInfo targetFile)
    {
        byte[] hashBytes = null;
        using (var hashcalc = System.Security.Cryptography.MD5.Create())
        {
            using (FileStream inf = targetFile.OpenRead())
                hashcalc.ComputeHash(inf);
            hashBytes = hashcalc.Hash;
        }
        return hashBytes;
    }

You can convert the byte[] array into a string using the methods shown above. Also: You can change "MD5" in the third line to SHA1, SHA256, etc. to calculate other hashes.