Programming for Computing 07 - 08

Chapter: List Boxes
Module Admin   Contents, Index   Schedule  
1: Intro to VB    2: First Program and Projects    3: Variables, assignment, Strings    4: Type Conversion, InputBox, Constants    5:Built-in Functions    6: If - decisions    7: Loops - while, for    Example - find smallest    8: Scopes: local, global    9: Writing Procedures.Parameters, Functions   
10: Objects    11: Design    12: Testing    13: Graphics    14: Controls and events    15: Listboxes    16: Arrays    17: Files    18: The Command Line   

Appendices(links etc)   Additional Lectures    Tutorials (not in printed notes)     Selected solutions (not in printed notes)     Assignments    Additions and Errata   

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The  schedule page has info on what we will do each week.

Why do we do this...

 

Section 15.0

Most programs process sequences - lists of data. For example:
  • a list of names in a database
  • a list of file names in a folder
  • the list (collection) of bytes in an mp3 file
  • the text of a web page.
Arrays, lists, collections are quite similar. Each of these can support these operations:
  • creating a new list
  • inserting a new item in the list (e.g. insert an item at the end of the list, or insert a new item at position number 37)
  • amending an existing item (e.g. amend item number 32 to "Mike" )
  • deleting an item (e.g. delete item number 24)
  • recalling an item (e.g. store item number 27 into x)

The notes for this section are in listboxes.doc


They use the VB listbox to give a visual representation of a list.

If your list does not need to be displayed on the screen (most of them are not displayed) then you can use the VB array facility. (In a later chapter)

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