how to create an array of checkbox in the form using vb.net?

Question

_{Wednesday, January 21, 2009 10:17 AM}

Hi all,

    In my project, i need to create an array of checkbox in the windows form using vb.net? How to create array of checkbox? Please help me.

Thanks in advance.Regards, Suresh R (MCA, TCE)

All replies (6)

_{Thursday, January 22, 2009 1:49 AM ✅Answered}

Here's a more complete reply.

Public Class Form1

' A list to keep track of the TextBoxes you Added

Dim checkBoxes As New List(Of CheckBox)

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

' The default offset for checkboxes that Visual Studio uses

' when you put one check box under the other.

Const checkBoxVerticleOffset As Integer = 22

' The text that will be displayed next to your text box

Dim checkBoxLabels As New List(Of String)

checkBoxLabels.Add("Green is keen!")

checkBoxLabels.Add("Yellow is mellow!")

checkBoxLabels.Add("Blue is cool!")

' Note: Since I am adding the checkboxes to the list checkBoxes, checkBoxes.Count

'       is the number of the current CheckBox.  I use this fact below.

For Each checkBoxLabel As String In checkBoxLabels

' Instantiate a new text box for each name

Dim newCheckBox As CheckBox

newCheckBox = New CheckBox

' A Default Name. You probably don't really need this, but it might come in handy

newCheckBox.Name = "CheckBox" & CStr(checkBoxes.Count)

' Set the text displayed next to the check box

newCheckBox.Text = checkBoxLabel

' You will have to add the new text box to the form or

' a container control of some sort to display it.  I'm adding it to a GroupBox

GroupBox1.Controls.Add(newCheckBox)

' Auto size the text portion of the control.

newCheckBox.AutoSize = True

' This is one way that you can make sure that the check boxes don't overlap when you add them to

' the container control

newCheckBox.Location = New System.Drawing.Point(6, 18 + checkBoxes.Count * checkBoxVerticleOffset)

' Tabs through the boxes in the proper order

newCheckBox.TabIndex = checkBoxes.Count

' Just makes the textboxes look right

newCheckBox.UseVisualStyleBackColor = True

' And don't forget to add your new check box to your list!

checkBoxes.Add(newCheckBox)

Next

End Sub

End Class

If you really need the checkboxes in an Array as opposed to a list, you can then call checkBoxes.ToArray().

-Hazelrah

---

_{Wednesday, January 21, 2009 11:18 AM}

 

Dim chk1 As New CheckBox, chk2 As New CheckBox

Dim chkBoxArray As CheckBox() = {chk1, chk2}

S/W Engineer http://glotech.co.in

---

_{Thursday, January 22, 2009 2:01 AM}

 if you don't mind me asking why in an array?

---

_{Thursday, January 22, 2009 4:12 AM}

 I may be wrong but my assumption that Suresh said 'array' in general terms, meaning something like "a set of widgets aligned in an orderly fasion", not the Array type in .NET

-Hazelrah

---

_{Thursday, January 22, 2009 9:26 AM}

i need to use checkboxes repeatedly in my project, tat is why i need array of checkbox. Its uesful one Hazelrah.

But there is one problem..... If i add new checkbox in that array at run time, it does not updated properly. 

The scenaio is that if i add new checkbox names "Rose is sweet" at run time by clicking a button, from tat moment or next time wen i load the same form, it should be loaded along with nes checkbox.

Can anyone help me...

Thanks in advance.Regards, Suresh R (MCA, TCE)

---

_{Sunday, January 25, 2009 1:25 AM}

Make sure that you aren't forgetting this line.  This is the one that will actually make the Control show up.   

' You will have to add the new text box to the form or

' a container control of some sort to display it.  I'm adding it to a GroupBox

GroupBox1.Controls.Add(newCheckBox)

 

Also, be aware, that I'm using a GroupBox as an example.  You can add a control to a Form, a Panel and several other container Controls.

 

-Hazelrah