How do I read byte array [size may vary dynamically] and assign its value to custom class object in C#

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C#

C#4.0

I have class like below. And i have byte array. First byte has product length. Based on that product name byte allocation should occur. So i may get dynamic byte array collection. In this case how do i map this and assign values in my class object.

[StructLayout(LayoutKind.Sequential)]
 public class Blob
   {
       #region Properties
       public int ProductLength { get; set; }
       public string ProductName { get; set; }
       public byte ProductVersion { get; set; }
       public byte ProductRevision { get; set; }
       public ushort ProtocolVersion { get; set; }
       public ushort ProductId { get; set; }
       public byte DataCount { get; set; }
       public ProductData ProductData { get; set; }
       #endregion
   }

What I have tried:

I have tried the manual mapping. Is this the right way to do it? Kindlyhelp..

Blob blob = new Blob();

int i = 0;
int j = blob.ProductLength = bytes[i];

for (int count = i+1; count < j; count++)
    blob.ProductName = blob.ProductName+ bytes[count].ToString();