Padding Left Side Of Number - VB.NET

Posted on 2009-07-13
Last Modified: 2012-05-07

I have a database field to represent in fixed length - Say length (7). If i have a value "123" from database then i want to represent it with "0000123". Similarly for "1234", i want to represent it with "0001234". Can you please provide me simple function which will do this task in VB.NET ?

Question by:milani_lucie
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LVL 60

Assisted Solution

by:Kevin Cross
Kevin Cross earned 140 total points
ID: 24845970
One method is using ToString with format string like "0000000" or "#0000000".  Alternatively, you could do this on the database end by converting the INT to varchar and then concatenting '0000000' in front of it and then taking the right 7 characters.
Dim i As Integer = 123

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LVL 60

Expert Comment

by:Kevin Cross
ID: 24845983
The VB.NET way more quickly adapts to numbers greater than 7 characters if you ever breach the limits of the 7 digits.  However, here is the SQL version (MS SQL example).
SELECT RIGHT('0000000' + CAST(123 AS VARCHAR(10)), 7);

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LVL 86

Accepted Solution

Mike Tomlinson earned 260 total points
ID: 24846060
If you are working with STRING values from the DB then use String.PadLeft() or String.PadRight().
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LVL 60

Expert Comment

by:Kevin Cross
ID: 24846201
Are those still around?  Nice suggestion, Idle Mind.  I use to love using those functions think was in MS Access then Microsoft decided to get rid of them for whatever reason.  Forgot they are now back, or maybe I was misinformed all these years. ;)

Assisted Solution

barrislb earned 100 total points
ID: 24847303
Hi milani_lucie,

I'm just providing some sample code to what Idle Mind suggested. I'm a little late in, but nevertheless, I still can assist.  :- )

mwvisa1: yes,  the pad methods are still around. :- ) The PadLeft and PadRight, actually replaced the LSet() and RSet() functions of VB 6.
Dim PadString As String = "1234".PadLeft(7, "0")

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Expert Comment

ID: 24847334
MessageBox.Show(RightPadString)  Should Be: MessageBox.Show(PadString)


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