Conversion from VB to C#

Private Function cryptEntry(s$) As String

    Dim k$, r$, i%

    k = "§$=)%;:-:*(""§%""§=("             

    r = Left$(s + String(15, Chr$(32)), 15)           

    For i = 1 To Len(r)

        Mid$(r, i, 1) = Chr$(Asc(Mid$(r, i, 1)) Xor Asc(Mid$(k, i, 1)))

    Next i

    cryptEntry = r

End Function

private string cryptEntry(string s)
       {
           string k = "", r = "";
           k = "§$=)%;:-:*(""§%""§=(";
           string insideString = "", concatString = "", leftString = "";
           insideString = new String((char)32, 15);
           concatString = String.Concat(s, insideString);
           leftString = concatString.Substring(0, 15);
           r = leftString;
           for (int i = 1; i < r.Length; i++)
           {
               string rmid = r.Substring(i, 1);
               string kmid = k.Substring(i, 1);
               byte[] rmidascii = Encoding.ASCII.GetBytes(rmid);
               byte[] kmidascii = Encoding.ASCII.GetBytes(kmid);
              // rmid = (rmidascii != kmidascii);
            }
           return r;
       }