Create a hexadecimal value out of range of the UInt64 type and Convert it back to a number. : Data Type Convert « Data Type « VB.Net Tutorial

Module Example
   Public Sub Main()


        Dim value As String = Convert.ToString(Long.MinValue, 16)
        
        Try
           Dim number As UInt64 = Convert.ToUInt64(value, 16)
           Console.WriteLine("0x{0} converts to {1}.", value, number)
        Catch e As OverflowException
           Console.WriteLine("Unable to convert '0x{0}' to an unsigned long integer.",value)
        End Try   
   End Sub
End Module

2.45.Data Type Convert
	2.45.1.	CLng: convert integer to long
	2.45.2.	CByte: convert to byte
	2.45.3.	CSng: convert to Single
	2.45.4.	CDbl: convert to double
	2.45.5.	CDec: convert to decimal
	2.45.6.	Call Int64TryParse(String, NumberStyles, IFormatProvider, Int32)
	2.45.7.	Convert a string into a 64-bit signed integer value using the Int64.Parse(String) method
	2.45.8.	Convert.ToBase64CharArray() and Convert.FromBase64CharArray methods
	2.45.9.	Converts the bit patterns of UInt32 values to Byte arrays with the GetBytes method.
	2.45.10.	Convert.ToString( non-numeric types, IFormatProvider ).
	2.45.11.	Create a hexadecimal value out of range of the UInt64 type and Convert it back to a number.