[RESOLVED] [2005] GroupBox Container issue?

I have a Groupbox control on my form in which I have about 8 checkbox controls. One of the checkboxes, if checked, will make the rest of the checkboxes become checked. I have the following code that isn't working.

Code:

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                For Each ctl As Control In gb1.Container.Components
                    If TypeOf (ctl) Is CheckBox Then
                        ctl.Checked = True  'Isn't working 
                    End If
                Next

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With what I have above, "Checked" isn't a property of the "ctl". What am I doing wrong in this construct?

Thanks,

Once you find that your Control is of type CheckBox, you have to cast that Control to an actual CheckBox. You don't actually have a CheckBox until you cast that Control to a CheckBox.

You get "Checked" isn't a property of the "ctl" because Checked really isn't a property of Control. Checked is a property of a CheckBox.

nmadd,

I did what you suggested and still got an error, unless I did it wrong! Here's the code:

Code:

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                For Each ctl As Control In gb1.Container.Components
                    If TypeOf (ctl) Is CheckBox Then
                        ctl = DirectCast(ctl, CheckBox)
                        ctl.checked = True        'Doesn't like this statement
                    End If
                Next

---

This should work......

Code:

---

CType(ctrl, CheckBox).Checked = True

---

Cheers

Ok,

Now I'm getting the attached error message on the highlighted line:

Code:

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                For Each ctl As Control In gb1.Container.Components
                    If TypeOf (ctl) Is CheckBox Then
                        ctl = DirectCast(ctl, CheckBox)
                        CType(ctl, CheckBox).Checked = False
                    End If
                Next

---

Thanks,

nevermind, I saw my problem. SunglassesRon, your code worked to.

Thanks,

You don't need this line...

Code:

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ctl = DirectCast(ctl, CheckBox)

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On a side note, it won't make much difference unless you're doing this a million times, but if you are certain that you are casting to the right type, DirectCast is faster.