Converting a String or base10 to a base 2 in VB

Question

I am looking for a way to take a value from a text box and convert it into a base 2 number with 8 digits.
So if they type in a text box 2 it would respond 00000010. or if they typed 255 11111111. etc...
is there any way to do this.

Dim prVal As Integer

prVal = PrefixTxt.Text

JaredPar · Accepted Answer · 2014-02-10T22:05:40.413

6

Use the Convert.ToString method and specify the base as 2. This will convert an Integer value into a String in the specified base

Dim result = Convert.ToString(Integer.Parse(prVal), 2)

As @Dan pointed out if you want to force this to be width 8 use the PadLeft method

result = result.PadLeft(8, "0"c)

edited Feb 10 '14 at 22:05

answered Feb 10 '14 at 21:57

JaredPar

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@Dan good call, updated to account for that – JaredPar Feb 10 '14 at 22:06

score 2 · Answer 2 · answered Feb 10 '14 at 22:01

2

Convert.ToString(Integer.Parse(prVal), 2).PadLeft(8, '0')

answered Feb 10 '14 at 22:01

Kaz-LA

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A `char` in VB is expressed with `"0"c` and not `'0'`. – JaredPar Feb 10 '14 at 22:06
oh thanks :) a day-to-day C# guru ... – Kaz-LA Feb 10 '14 at 22:07
Yeah it's a really strange syntax if you're coming from a C based language – JaredPar Feb 10 '14 at 22:07

Converting a String or base10 to a base 2 in VB

2 Answers2