How to identify controls in a collection

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Amil - 13 Oct 2004 17:55 GMT

Hi all,

I have a user control that has a button and five labels. Using foreach to
loop through all the controls, how do I identify all the labels apart from
the button?

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Imran Koradia - 13 Oct 2004 18:03 GMT

For Each Ctrl As Control In UserControl.Controls
If TypeOf Ctrl Is Button Then
' its a button
ElseIf TypeOf Ctrl Is Label Then
' its a label
ElseIf TypeOf Ctrl Is TextBox Then
' its a textbox
...
End If
Next Ctrl

hope that helps..
Imran.

> Hi all,
>
> I have a user control that has a button and five labels. Using foreach to
> loop through all the controls, how do I identify all the labels apart from
> the button?

Reply to this Message

Amil - 13 Oct 2004 18:21 GMT

Thanks Imran, you pointed me to the right direction.

> For Each Ctrl As Control In UserControl.Controls
> If TypeOf Ctrl Is Button Then
[quoted text clipped - 15 lines]
> > loop through all the controls, how do I identify all the labels apart from
> > the button?

Reply to this Message

Herfried K. Wagner [MVP] - 13 Oct 2004 18:14 GMT

"Amil" <Amil@discussions.microsoft.com> schrieb:

> I have a user control that has a button and five labels.
> Using foreach to loop through all the controls, how do
> I identify all the labels apart from
> the button?

\\\
if (foo is Label)
...;
else if (foo is Button)
...;
///

Signature

Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/

Reply to this Message

Amil - 13 Oct 2004 19:11 GMT

How can I loop thru the controls in my usercontrol? My usercontrol adds a
label everytime you click on the button and there can be none of more than
one labels. Using foreach requires that the collection is of the same type.

> "Amil" <Amil@discussions.microsoft.com> schrieb:
> > I have a user control that has a button and five labels.
[quoted text clipped - 8 lines]
> ...;
> ///

Reply to this Message

Herfried K. Wagner [MVP] - 13 Oct 2004 19:22 GMT

"Amil" <Amil@discussions.microsoft.com> schrieb:

> How can I loop thru the controls in my usercontrol? My
> usercontrol adds a label everytime you click on the button
> and there can be none of more than one labels. Using
> foreach requires that the collection is of the same type.

If you are not nesting controls, you can use this code:

\\\
foreach (Control c in this.Controls)
{
if (c is Label)
{
Label cc = (Label)c;
...;
}
else if (c is Button)
...;
}
///

If you set the controls' names, you can uniquely identify the controls...

Signature

Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/

Reply to this Message

Amil - 13 Oct 2004 20:13 GMT

Thanks Herfried. It works.

> "Amil" <Amil@discussions.microsoft.com> schrieb:
> > How can I loop thru the controls in my usercontrol? My
[quoted text clipped - 18 lines]
>
> If you set the controls' names, you can uniquely identify the controls...

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How to identify controls in a collection

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