Click here to Skip to main content
15,921,250 members
Please Sign up or sign in to vote.
1.00/5 (1 vote)
See more:
Hello, i am getting error of either too large or something else.
I want to convert Hexadecimal input into Decimal..

The Hexadecimal is 64 characters......

What I have tried:

Public Shared Function Hex2Dec(ByVal hexstring) As String
Return Convert.ToString(Convert.ToInt64(hexstring, 16), 10)
End Function

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
TextBox3.Text = Hex2Dec(TextBox2.Text)
End Sub
Updated 31-Mar-20 6:55am
Ralf Meier 31-Mar-20 16:30pm    
From where does this Hex-String comes ?
What is it's sense ?
The reason of my question is that no Interger-Format is able to display such a great value as it's shown above. Perhaps you don't need the conversion as discribed by you - perhaps you need something complete different as conversion-algorhythm ...
Richard MacCutchan 1-Apr-20 3:46am    
All you need to do is to convert the string to its real binary value.
[no name] 3-Apr-20 1:14am    
i have done that but it gives me error converting binary value to decimal. error is binary value is too long.
Richard MacCutchan 3-Apr-20 3:23am    
Exactly so, you need to find a library that can generate large decimal strings.
Richard MacCutchan 3-Apr-20 12:28pm    
I don't know what your code does but the result should be 257469342825821024506703013686456028765754522658832

1 solution

I want to convert Hexadecimal input into Decimal..

You need to build a completely different conversion function because it is limited to 64 bits. your hex input is 64 hex => 256 bits.
I would have a look at BigInts.
Share this answer

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900