Need help in checkbox selection

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Hi all

I am using 3 checkboxes in my application and i want to select one checkbox at a time.please tell me how to do it..
i am using VB.NET 08 and SQL server 05...

Posted 23-Sep-12 19:27pm

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Abhijit Parab 24-Sep-12 1:30am

What type of application, you are working on? Desktop application or Web Aplication?

[no name] 24-Sep-12 1:33am

it's a desktop application...

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_Amy · Answer 1 · 2012-09-23T19:35:00

Group the different choice sets in separate group boxes (or panels, or other container controls, but group boxes are probably what you're after).
Refer How to: Group Windows Forms RadioButton Controls to Function as a Set[^]
Or you can try this:

C#

//Assign same checked change event for all the CheckBoxes.
private List<CheckBox> _CheckBoxGroup = new List<CheckBox>();
private void checkBox_CheckedChanged(object sender, EventArgs e)
{
    CheckBox chk = (CheckBox)sender;
    if (chk.Checked)
    {
        foreach(CheckBox other in _CheckBoxGroup)
        {
            if (other == chk)
            {
                continue;
            }
            other.Checked = false;
        }
    }
}

--Amit

*Karthik Harve* · Answer 2 · 2012-09-23T19:41:00

Solution 2

hi,

check these links.

CheckedListBox Class[^]
CheckedListBox.SelectionMode Property [^]

hope this helps.

Posted 23-Sep-12 19:41pm

Karthik Harve

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[no name] 24-Sep-12 1:49am

can u plz tell me for separate check boxes.because i m using that only..

**JF2015** · Answer 3 · 2012-09-23T19:57:00

Solution 3

Hi,

see this VB.NET code:

VB

Private Sub checkBox_CheckedChanged(sender As Object, e As EventArgs)
    If DirectCast(sender, CheckBox).Checked = False Then
        Return
    End If

    For Each ctrl As Control In DirectCast(sender, CheckBox).Parent.Controls
        If TypeOf ctrl Is CheckBox AndAlso ctrl <> sender Then
            DirectCast(ctrl, CheckBox).Checked = False
        End If
    Next
End Sub

You just need to add event handlers for your three checkboxes to the above code which is similar to the solution of Amy, but works without having a collection of checkboxes.
Use this for adding the event handlers:

VB

Me.checkBox1.CheckedChanged += New System.EventHandler(Me.checkBox_CheckedChanged)
Me.checkBox2.CheckedChanged += New System.EventHandler(Me.checkBox_CheckedChanged)
Me.checkBox3.CheckedChanged += New System.EventHandler(Me.checkBox_CheckedChanged)

Posted 23-Sep-12 19:57pm

JF2015

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[no name] 24-Sep-12 3:18am

please tell me how to use the below part of ur code...

JF2015 24-Sep-12 3:28am

For example you can add that to the constructor of your form as here:
Public Sub New()
InitializeComponent()
Me.checkBox1.CheckedChanged += New System.EventHandler(Me.checkBox_CheckedChanged)
Me.checkBox2.CheckedChanged += New System.EventHandler(Me.checkBox_CheckedChanged)
Me.checkBox3.CheckedChanged += New System.EventHandler(Me.checkBox_CheckedChanged)
End Sub

[no name] 24-Sep-12 3:29am

ok ok..thanks..

JF2015 24-Sep-12 3:31am

Please try it out and upvote/accept my answer. Thanks!

[no name] 24-Sep-12 3:38am

i did this but it's showing that u have to raiseevent statement to raise the events..

JF2015 24-Sep-12 3:46am

Normally RaiseEvent should occur when you click on a checkbox, you don't need to trigger it manually. Where does it state that?

[no name] 24-Sep-12 3:48am

the second part of your code when i pasted in my application that time it's giving..

Need help in checkbox selection

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