How do I...generate auto number in vb.net

Question

0.00/5 (No votes)

See more:

i want to generate auto number like A000012015 and i wnat to increment 000001 to 00999 like this not 00001 to 000099. my code is as under if any other short code for the same please help me

VB

Sub auto()
        Dim A As String = "A0000"
        Dim B As String = Now.Year
        Dim c As String = "1"
        Dim d As String = A + c + B
        Dim f, i, j, k As Integer
        Dim g , h As String
        con.Open()
        com = New OleDbCommand("select autonum from auto", con)
        If com.ExecuteScalar Is DBNull.Value Then
            AutonumTextBox.Text = d
        Else
            'g = com.ExecuteScalar
            dr = com.ExecuteReader
            While dr.Read
                j = Microsoft.VisualBasic.Mid(dr.Item(0), 3, 1)
                f = Microsoft.VisualBasic.Mid(dr.Item(0), 4, 1)
                h = Microsoft.VisualBasic.Mid(dr.Item(0), 5, 1)
                k = Microsoft.VisualBasic.Mid(dr.Item(0), 2, 1)
                i = j & f & h
            End While
            If i >= 999 Then
                g = Microsoft.VisualBasic.Left(A, 1)
                AutonumTextBox.Text = g.ToString + (i + 1).ToString + B
            ElseIf i >= 99 Then
                g = Microsoft.VisualBasic.Left(A, 2)
                AutonumTextBox.Text = g.ToString + (i + 1).ToString + B
            ElseIf i >= 9 Then
                g = Microsoft.VisualBasic.Left(A, 3)
                AutonumTextBox.Text = g.ToString + (i + 1).ToString + B
            Else
                g = Microsoft.VisualBasic.Left(A, 4)
                AutonumTextBox.Text = g.ToString + (i + 1).ToString + B
            End If
        End If
        con.Close()

    End Sub

Posted 12-Oct-15 18:10pm

ramniwas74

Add a Solution

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)

Manas_Kumar · Answer 1 · 2015-10-12T19:38:00

Try with below code:

VB

Dim totalLength As Integer = 5
Dim g As String
For i As Integer = 1 To 999
	g = "A" + i.ToString().PadLeft(totalLength, "0"C) + DateTime.Now.Year
Next

Output:
A000012015
A000022015
..........
A009992015

Note: As per your question(00001 to 00999), I take total length as 5. So if you need it more then you can change totalLength value.