Solved

Handling Arrays

Posted on 2009-06-30
2
177 Views
Last Modified: 2012-05-07
I am having an issue with an array (actually two).  I am parsing a string from a database to display it on a website.  The string is like value;position,value;position

My code first splits on the comma which give me value;position in one array.  I then split that into another array on the semicolon.  This works great most of the time.  However, some instances the "position" in the string will be missing from the data so I get an out of index error.  I've tried to look for floor.length > 0 or see if this is null but that doesn't help.  below is the code snippet
Sample data: MasterBedroom;1,Den;,GreatRoom;,Bedroom;1,Bedroom;1,Bedroom;B,FullBath;B,FullBath;1,FullBath;1,DiningRoom;
in this example, MaterBedroom is the value, 1 is the position.  Notice that Den is the next value, but is missing position.  Desire is to put "Main Floor" where no position is provided.
 
Code:
 If Not objRdr("rooms") Is DBNull.Value Then
                        lblDiningAreas.Text = "<table>"
                        Dim rooms() As String
                        Dim floor() As String
                        rooms = objRdr("rooms").Split(",")
                        For j As Integer = 0 To rooms.Length - 1
                            lblDiningAreas.Text &= "<tr><td class='content'><b>"
                            floor = rooms(j).Split(";")
                            lblDiningAreas.Text &= floor(0) & "</b></td><td class='content'>&nbsp;&nbsp;&nbsp;"
                            If floor.Length > 0 Then
                                Select Case floor(1)
                                    Case "1"
                                        lblDiningAreas.Text &= "Main Level" & "</td></tr>"
                                    Case "2"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "3"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "4"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "5"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "6"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "7"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "8"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "9"
                                        lblDiningAreas.Text &= "Upper Level" & "</td></tr>"
                                    Case "B"
                                        lblDiningAreas.Text &= "Basement" & "</td></tr>"
                                End Select
                            Else
                                lblDiningAreas.Text &= "Main Level" & "</td></tr>"
                            End If
 
Out put looks like:
MasterBedroom      Main Level
etc..                        etc...

Open in new window

0
Comment
Question by:azyet24
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 48

Accepted Solution

by:
jpaulino earned 250 total points
ID: 24746779
You should do the vaidation first and then the lblDiningAreas.Text &= floor(0) & "</b></td><td class='content'>&nbsp;&nbsp;&nbsp;"

Like:

 If floor.Length > 0 Then
    lblDiningAreas.Text &= floor(0) & "</b></td><td class='content'>&nbsp;&nbsp;&nbsp;"
    ...

Open in new window

0
 
LVL 4

Assisted Solution

by:vbgb
vbgb earned 250 total points
ID: 24747140
Although splitting a string like "Den;" with split(";") should always give an array length of 2 ("Den" and an Empty String), your code at 'If floor.length>0 is only testing if "Den" exists, not the second position element.

I assume that the Out of Index error occurs in the case statement so you need to check that  'floor.length>1', rather than 'floor.length>0'
- or you could check that the upper bound of the array is greater than 0 (If floor.getupperbound(0)>0)
0

Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It’s quite interesting for me as I worked with Excel using vb.net for some time. Here are some topics which I know want to share with others whom this might help. First of all if you are working with Excel then you need to Download the Following …
The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
In this video, viewers will be given step by step instructions on adjusting mouse, pointer and cursor visibility in Microsoft Windows 10. The video seeks to educate those who are struggling with the new Windows 10 Graphical User Interface. Change Cu…
This tutorial will teach you the special effect of super speed similar to the fictional character Wally West aka "The Flash" After Shake : http://www.videocopilot.net/presets/after_shake/ All lightning effects with instructions : http://www.mediaf…
Suggested Courses

615 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question