how can I auto-generate a serial number in vb.net?

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I am using VB.Net 2008 and SQL server 2005 as backend.

I want to create a serial number that is like **abc/2010/01.**.In this..
1) the abc is same in all the serial no.
2) the 2010 is used from the running Year.(using date for year)
3) the 01 is a actual serial no that can be auto generated...

But how can I do this?
How can i find the maximum number for my serial number?
How can I maintain it if I delete it then all after delete serial numbers will take it's place..(there is no break in serial number on delete)?
Please help me.

Posted 4-Dec-10 2:20am

Neeil

Updated 4-Dec-10 2:31am

JF2015

v3

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JF2015 4-Dec-10 8:27am

Edited to improve readability and fix some spelling errors.

2 solutions

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**JF2015** · Answer 1 · 2010-12-04T02:29:00

Ok,

I can at least tell you that there is NO maximum for your serial number - you can use unlimited numbers.
Your problems seems to be the handling of the numbers. On generating a serial number you should store the year and the auto-generated number somewhere (e.g. in a database). This will help you to make sure that on deleting a serial number you don't risk creating the number again.

Try to break down your problem in simple tasks:
1. Create the numbers
2. Store the created numbers in your database or elsewhere
3. Handle deleting a serial number

imamitkumar · Answer 2 · 2012-02-11T08:47:00

Solution 2

Select Max(sno) +1 from tbl

then after
txtbox.text="abc" & "/" & Format(now,"yyyy") & "/" & com.ExecuteScalar()

Posted 11-Feb-12 8:47am

imamitkumar