How to convert a alpha numeric string into Hex

I have a alpha numeric serial number "0013a200402c4bca" and I want to convert it into hex?
any ideas?
cmdolcetAsked:
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Jaime OlivaresSoftware ArchitectCommented:
Try with the following:

Dim test as String = "0013a200402c4bca"
Dim num as Int64
num = Convert.ToInt64(test, 16)
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Jaime OlivaresSoftware ArchitectCommented:
Notice that a regular Integer (Int32) cannot contain such large number.
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cmdolcetAuthor Commented:
jaime_olivares, the alpha string im trying to convert i want it in an array

so the string"0013a200402c4bca"
how can i break this up into array section
(0) = 00
(1)=13
(2)=a2
(3)=00
(4)=40
(5)=2c
(6)=4b
(7)=ca

then convert this to hex value?
Sorry i should have been clear when i originally asked the question
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bhmahlerCommented:
That value is already in hex. It is an 8 bytes int64  if you want to get the value of it numerically you can use something like this.

Dim result As Int64 = Int64.Parse("0013a200402c4bca", Globalization.NumberStyles.HexNumber)

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bhmahlerCommented:
You can also use bitconverter to break the number back into the hex string
BitConverter.ToString(BitConverter.GetBytes(result), 0))

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