Automatic number with date format

Question

1.00/5 (1 vote)

See more:

i have code here ...

VB

<pre>   If Not dr.HasRows Then
            penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF" + "0001"
        Else
            penfaktur.Text = Val(Microsoft.VisualBasic.Mid(dr.Item("no_faktur").ToString, 11, 4)) + 1
            If Len(penfaktur.Text) = 1 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF000" & penfaktur.Text & ""
            ElseIf Len(penfaktur.Text) = 2 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF00" & penfaktur.Text & ""
            ElseIf Len(penfaktur.Text) = 3 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF0" & penfaktur.Text & ""
            ElseIf Len(penfaktur.Text) = 4 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF" & penfaktur.Text & ""
            End If
        End If

I want every date change the number back to "0001" ..
help me..

ex :

01072017NF0099
01072017NF0100
02072017NF0001 <--- Change back to NF + 0001 here, since the date changed
02072017NF0002
03072017NF0001 <--- Change back to NF + 0001 here, since the date changed

What I have tried:

If Not dr.HasRows Then
            penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF" + "0001"
        Else
            penfaktur.Text = Val(Microsoft.VisualBasic.Mid(dr.Item("no_faktur").ToString, 11, 4)) + 1
            If Len(penfaktur.Text) = 1 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF000" & penfaktur.Text & ""
            ElseIf Len(penfaktur.Text) = 2 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF00" & penfaktur.Text & ""
            ElseIf Len(penfaktur.Text) = 3 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF0" & penfaktur.Text & ""
            ElseIf Len(penfaktur.Text) = 4 Then
                penfaktur.Text = "" + Format(Now, "ddMMyyyy") + "NF" & penfaktur.Text & ""
            End If
        End If

Posted 11-Jul-17 23:31pm

Khabibb Mubarakk

Updated 12-Jul-17 0:02am

Add a Solution

Comments

Michael_Davies 12-Jul-17 6:08am

Rather than testing the length with so many nested If's you could just;

penfaktur.Text = "" + Format(Now, "ddMMyyyy") + penfaktur.Text.PadLeft("0",4) & ""

Also you are using old BASIC function calls like Val and Mid when there are methods and functions on strings in .Net.

Have not tested this but just to show;

penfaktur.Text = (Integer.Parse(dr.Item("no_faktur").ToString.SubString(10, 4)) + 1).Tostring

Also you need to be certain that there was a number in the string or you will get an exception.

Khabibb Mubarakk 13-Jul-17 4:40am

please give me a complete code

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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

CPallini · Answer 1 · 2017-07-12T00:02:00

Solution 1

Maintain the last assigned Datetime and compare its Date part with the one of the Datetime you are currently assigning. On mismatch restart the counter.

Posted 12-Jul-17 0:02am

CPallini

Comments

Khabibb Mubarakk 13-Jul-17 4:43am

i know i want cek on database if date isn't same then back to 0001
but i'm still confuse how to implementation to code..because i'm really amateur on vb