VB6 Translate to C# .net

hi! can anybody please translate this in c# .net?

Code:

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    Dim SK As Long, K As Long
    ' init randomizer for password
    Rnd -1
    Randomize Len(password)
    ' (((K Mod 256) Xor Asc(Mid$(Password, K, 1))) Xor Fix(256 * Rnd)) -> makes sure that a
    ' password like "pass12" does NOT give the same result as the password "sspa12" or "12pass"
    ' or "1pass2" etc. (or any combination of the same letters)
   
    For K = 1 To Len(password)
        SK = SK + (((K Mod 256) Xor Asc(Mid$(password, K, 1))) Xor Fix(256 * Rnd))
    Next K
   
    ' init randomizer for encryption/decryption
    Rnd -1
    Randomize SK
   
    ' encrypt/decrypt every character using the randomizer
    For K = 1 To Len(str)
        Mid$(str, K, 1) = Chr(Fix(256 * Rnd) Xor Asc(Mid$(str, K, 1)))
    Next K
   
    RndCrypt = str

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Thanks in advance!