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De-serialize Base64 String to Object

/ Published in: C#
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De-serializes a Base64 String back to it's original object. First x characters should indicate the byte length of the encoded data.

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  1. public static object DeserializeBase64(string s)
  2. {
  3.     // We need to know the exact length of the string - Base64 can sometimes pad us by a byte or two
  4.     int p = s.IndexOf(':');
  5.     int length = Convert.ToInt32(s.Substring(0, p));
  6.  
  7.     // Extract data from the base 64 string!
  8.     byte[] memorydata = Convert.FromBase64String(s.Substring(p + 1));
  9.     MemoryStream rs = new MemoryStream(memorydata, 0, length);
  10.     BinaryFormatter sf = new BinaryFormatter();
  11.     object o = sf.Deserialize(rs);
  12.     return o;
  13. }

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