Solved

VB.NET Retrieving GroupBox Value

Posted on 2004-03-28
10
1,515 Views
Last Modified: 2007-12-19
If i put a number of checkboxs on a groupbox, how can I retrieve the values of the checkbox that is checked?
0
Comment
Question by:yan_er04
  • 6
  • 4
10 Comments
 
LVL 48

Expert Comment

by:AlexFM
ID: 10698355
Use CheckBox.Checked Property:

if checkBox1.Checked = true then
    ...
0
 

Author Comment

by:yan_er04
ID: 10698363
Isn't there a faster way?
Like groupbox.value or something?
I could use the checked property but that will mean I have to loop through all the checkboxes.
0
 
LVL 48

Expert Comment

by:AlexFM
ID: 10698389
It doesn't matter that checkboxes belong to one group, each of them mat be checked or not, when you check one of them, others are not unchecked.
Possibly you need RadioButton. In any case, testing all Checked properties is not time-critical.
0
Space-Age Communications Transitions to DevOps

ViaSat, a global provider of satellite and wireless communications, securely connects businesses, governments, and organizations to the Internet. Learn how ViaSat’s Network Solutions Engineer, drove the transition from a traditional network support to a DevOps-centric model.

 

Author Comment

by:yan_er04
ID: 10698408
not time-critical, but considering that i have 40 over checkboxes, it's a lot of codes.
is that any type of dynamic looping i can use?
0
 
LVL 48

Expert Comment

by:AlexFM
ID: 10698427
If you have number of checkboxes, it's impossible to get only one value for group. Group is not defined for checkboxes because when one of them is checked, other checkboxes are not unchecked automatically. So, having 5 checkboxes in the form you can get results: checked, checked, unchecked, checked, unchecked. Obviously, to read this result you need loop.
To have only one value for group use RadioButton with AutoCheck property set to true. If you don't want to extract result for group, handle all RadioButton clicks in group and set some variable to clicked RadioButton number. This variable contains what you need - number of checked radio button in group.
0
 
LVL 48

Expert Comment

by:AlexFM
ID: 10698437
By the way, 40 over checkboxes is not time-critical. To write short code you can enumerate Form.Controls or Panel.Controls collection.
0
 

Author Comment

by:yan_er04
ID: 10698446
I am not asking to get one value. I was hoping for an array of values of the checked checkboxes.
0
 
LVL 48

Expert Comment

by:AlexFM
ID: 10698505
Consider Windows form with 3 checkboxes: CheckBox1, CheckBox2, CheckBox3 and button Button1. Let's keep checkbox number in array in it's Tag property:

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        CheckBox1.Tag = 0
        CheckBox2.Tag = 1
        CheckBox3.Tag = 2
    End Sub

To extract all checkbox values in array by generic way:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim n As Integer
        Dim i As Integer
        Dim nResult(3) As Boolean
        Dim s As System.Text.StringBuilder
        Dim nTag As Integer

        ' Read results to array
        n = Me.Controls.Count

        For i = 0 To n - 1
            If TypeOf (Me.Controls(i)) Is CheckBox Then
                nTag = CType(Me.Controls(i).Tag, Integer)
                If CType(Me.Controls(i), CheckBox).Checked = True Then
                    nResult(nTag) = True
                Else
                    nResult(nTag) = False
                End If
            End If
        Next

        ' Show array contents
        s = New System.Text.StringBuilder

        For i = 0 To 2
            If nResult(i) = True Then
                s.Append("+")
            Else
                s.Append("-")
            End If
        Next

        MessageBox.Show(Me, s.ToString())

    End Sub
0
 
LVL 48

Accepted Solution

by:
AlexFM earned 125 total points
ID: 10698522
Another way - handle Click event for each checkbox and set appropriate array element to true or false.
0
 

Author Comment

by:yan_er04
ID: 10698552
Thanks a lot
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Upgrading my SSIS package in VS 2012 6 83
SSIS Feed MS SQL Server Stored procedure with loop 4 53
Change to file doesn't show up 16 73
Asp.Net Session Question 2 33
IP addresses can be stored in a database in any of several ways.  These ways may vary based on the volume of the data.  I was dealing with quite a large amount of data for user authentication purpose, and needed a way to minimize the storage.   …
In my previous article (http://www.experts-exchange.com/Programming/Languages/.NET/.NET_Framework_3.x/A_4362-Serialization-in-NET-1.html) we saw the basics of serialization and how types/objects can be serialized to Binary format. In this blog we wi…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

679 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