Homework Assignment #4

Many students completed this assignment in-class
 in class #5 on 3/12/2007.

In class exercise
   to get credit for this assignment,
    demonstrate your program for the instructor in class.

starting visual studio
 create web site
  use template: asp.net web site
  location: filesystem
  language: visual basic
  file:  A:\web sites\website1
     create dir ?   yes
  Add this heading: CS 206 class 5 project
  pt size 24
     (if missing tool bar for pt size,
       view
        tool bars
         formatting

  Start without debugging (ctrl F5)
    make sure the browser shows the heading ok

  File
   Save all   
     (but floppy did not light up)

  close vis studio 
     (floppy did light up)

  remove floppy
  start visual studio
   open web site 1
      should fail: can't access a:
  insert floppy
   open web site 1
    now I see my heading

   if the start page stays on the screen
    look for default.aspx tab and click it

   Look at the soln explorer
    to see the files in your project
     note it is under a:

  Add a drop down list to your project
   with elements red, blue, yellow

      select the ddl
      unpin the solution explorer (to give me more room)
      change ID to ddlChoices
      click items   ...
      add these items:
         text     value
         red      red5.34
         blue     blue6.27
         green    green23.91

  Make the 2nd element in the list "selected"
    so it appears when the program starts running.

  dbl click the ddl
    to open a code window
     for SelectedIndexChanged for the ddl

  note these 2 tabs:
     default.aspx   (form)
     default.aspx.vb   (code)

  in the form add this text in 12 pt:
   You selected   
   follow by a label

  label properties
    ID lblResult
    Text   (blank)

  add code for the ddl (drop down list)
   by dbl clicking the ddl
    add this one line of code:

       lblResult.Text = ddlChoice.SelectedItem.Text

  under ddl properties
    set AutoPostBack to true

  Ctrl-F5 (start without debugging)

  Now modify the code to put the price of the selected
   color in the label.
    The price is in the Value of the selected ddl item
     but you must remove the text name at the start of the value
      which leaves the price.
===
   each value in a ddl should be unique
   otherwise
    after postback
     the ddl will select the first item with that value

===
review some basic VB string functions

  Dim sName as String
  Len(sName)   gives the # of chars in the string
  Left(sName,5)   gives the 5 left chars in the string
  Right(sName,5)   gives the 5 right chars in the string
  Mid(sName,start,count)   start is origin 1