How to: Convert Hexadecimal Strings to Numbers (Visual Basic)
This example converts a hexadecimal string to an integer using the ToInt32 method.
To convert a hexadecimal string to a number
Use the ToInt32 method to convert the number expressed in base-16 to an integer.
The first argument of the ToInt32 method is the string to convert. The second argument describes what base the number is expressed in; hexadecimal is base 16.
' Assign the value 49153 to i. Dim i As Integer = Convert.ToInt32("c001", 16)