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    <p>As you have probably noticed, there may be a few different places where you need to do this. To reuse a piece of functionality, create a new method that does that job. Double-click the form, and place this just before the End Class:</p> <pre><code>''' &lt;summary&gt;Update each of the CheckBoxes that in the same GroupBox&lt;/summary&gt; ''' &lt;param name="sender"&gt;The CheckBox that was clicked.&lt;/param&gt; ''' &lt;param name="e"&gt;&lt;/param&gt; ''' &lt;remarks&gt;It is assumed that only checkboxed that live in a GroupBox will use this method.&lt;/remarks&gt; Public Sub UpdateCheckBoxState(ByVal sender As System.Object, ByVal e As System.EventArgs) 'Get the group box that the clicked checkbox lives in Dim parentGroupBox As System.Windows.Forms.GroupBox = DirectCast(DirectCast(sender, System.Windows.Forms.CheckBox).Parent, System.Windows.Forms.GroupBox) For Each ctrl As System.Windows.Forms.Control In parentGroupBox.Controls 'Only process the checkboxes (in case there's other stuff in the GroupBox as well) If TypeOf ctrl Is System.Windows.Forms.CheckBox Then 'This control is a checkbox. Let's remember that to make it easier. Dim chkBox As System.Windows.Forms.CheckBox = DirectCast(ctrl, System.Windows.Forms.CheckBox) If chkBox.CheckState = 1 Then chkBox.Text = "Deselect All" Else chkBox.Text = "Select All" End If End If ' - is CheckBox Next ctrl End Sub </code></pre> <p>Now you have a method that will do what you want, you need to connect it to each CheckBox that you want to manage. Do this by adding the following code in The Form_Load event:</p> <pre><code> AddHandler CheckBox1.CheckedChanged, AddressOf UpdateCheckBoxState AddHandler CheckBox2.CheckedChanged, AddressOf UpdateCheckBoxState ... </code></pre> <p>So now the same method will handle the ClickChanged method of all of your connected checkboxes.</p> <p>You can also update the checkBoxes in addition to when the user clicks it by calling the Method <code>UpdateCheckBoxState(</code><em>CheckBoxThatYouWantToProgramaticallyUpdate</em><code>, Nothing)</code> perhaps in Form_Load, or elsewhere.</p>
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    1. POChange a checkbox text and function based on checkbox.checkstate in groupbox
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    1. USMichael Rodrigues
    1. USMichael Rodrigues
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    1. COThank you so much, I was actually looking for the correct method that would launch the update automatically. Since I'm making 20 or more checkboxes in groupbox1, is there anyway simplify the code that would launch the update based on the entire groupbox having a checkedchanged rather than each individual checkbox running the update? I actually spent a great deal of timing looking for something that would look like groupbox1.checkedchanged rather than checkbox1.checkedchanged
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    2. COAh, I see. Please see my updated answer.
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    3. COIt seems that got the job done perfectly. I was really surprised that it was so complicated to code what seems should be a relatively simple task (call update whenever groupbox1 contains a checked box). I would have never figured out that solution. Clearly, I have a lot to learn. Thanks again for your time.
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