Help with code to go through list box

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Hi,
I hope someone can point me in the right direction.
I have a list box that can have a different number of items in it.
I'm using this list box to create a text file tat is used for printing but I can only print 4 items on the page at a time so if the contents of the list box is creater than 4 I need to move the rest to the next page and so on and again if there are more than eight items the next 4 have to go onto a third page. The list will not always be a mutiple of 4. It could have 2, 3,4,5,6,7 etc items its just that I have to split it after every 4. Also each item gets a different location on the page and this is repeated after every 4 items.
I do not have any code yet as I've been racking my brain trying to figure out how to do this.
If anyone can help it would be great

Thanks in advance
J

Posted 14-Jan-16 5:18am

johnjsm

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ZurdoDev 14-Jan-16 12:10pm

I would think it will depend on how you are printing the document. If you have code for that you can control where things go.

johnjsm 15-Jan-16 3:19am

I'm using ZPL code for printing to a label printer. This allows you to give co-ordinates of where each item should be printed. You can also specify the beginning and end of a label.

ZurdoDev 15-Jan-16 7:29am

If you can specify the coordinates, where are you stuck exactly?

johnjsm 15-Jan-16 8:48am

1st item gets 1st coordinate
2nd item get 2nd coordinate
3rd item get 3rd coordinate
4th item get 4th coordinate
This is no problem. but when I go above 4 items I need to start back
5th item gets 1st coordinate
6th item get 2nd coordinate
7th item get 3rd coordinate
8th item get 4th coordinate
Aslo need to figure out that at the start and finish of each 4 items I need to put the code for start and finish of the label

ZurdoDev 15-Jan-16 9:02am

Yes, when you get to 4 you reset your variables so you can start back again.

Sergey Alexandrovich Kryukov 14-Jan-16 12:19pm

To start with, you should better specify what do you mean by ListBox. Which one? Full type name, please.
I understand that the algorithm would be exactly the same, but please imagine the position of the one who wants to write some code sample for you. This person would write a solution for one of ListBox types, and, if you meant something else, and still try it out, without noticing the difference, and then the sample won't compile, and then you complain about it... Who need so much waste of time?

And I don't see a big problem here. You can print whatever you want. But it depends on the application type and UI framework/library you want to use. You should better always tag it when you post a question.

—SA

johnjsm 15-Jan-16 3:21am

Sorry. I would be using standard ListBox in vb.net using .net4

Sergey Alexandrovich Kryukov 15-Jan-16 8:15am

Standard? Let's continue then. Which one?
Look, I asked clearly: Full. Type. Name.
Please don't tell you that you don't understand what is type or its full name.
—SA

johnjsm 15-Jan-16 8:52am

System.Windows.Forms.ListBox

Sergey Alexandrovich Kryukov 15-Jan-16 21:54pm

All right, thank you. Let me see now...
Well, I think Solution 1 already explains what you need. Does is solve your problem?
—SA

Maciej Los 14-Jan-16 14:29pm

Flat files, such as text files, didn't provide functionality to save page-breaks. But! there's a way to workaround it: How to: Print a Multi-Page Text File in Windows Forms[^]

johnjsm 15-Jan-16 3:22am

Because I'm using ZPL code for printing directly to the printer there is code for the start and end of a label. So I can have one file that contains mutiple starts and ends

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Maciej Los · Accepted Answer · 2016-01-15T08:24:00

Please, read all comments.

Start here: How to: Print a Multi-Page Text File in Windows Forms[^]

To achieve what you want to get, you should write for - next loop this way:

VB.NET

Dim j As Integer = 1
For i As Integer = 0 To 49
    If i Mod 4 = 0 Then j = 1
    Console.WriteLine("item: {0} coordinate: {1}", i, j)
    j +=1
Next

Result:

item: 0 coordinate: 1
item: 1 coordinate: 2
item: 2 coordinate: 3
item: 3 coordinate: 4
item: 4 coordinate: 1
item: 5 coordinate: 2
item: 6 coordinate: 3
item: 7 coordinate: 4
item: 8 coordinate: 1
item: 9 coordinate: 2
item: 10 coordinate: 3
item: 11 coordinate: 4
item: 12 coordinate: 1
item: 13 coordinate: 2
item: 14 coordinate: 3
item: 15 coordinate: 4
item: 16 coordinate: 1
item: 17 coordinate: 2
item: 18 coordinate: 3
item: 19 coordinate: 4
item: 20 coordinate: 1
item: 21 coordinate: 2
item: 22 coordinate: 3
item: 23 coordinate: 4
item: 24 coordinate: 1