Controls of a form

[Hamed]

Hello

I have a form that containes a lot of controls including panels those
contain other controls. Is there a way to simply get all contained controls
either directly or indirectly through other containers such as panel or
GroupBox controls?

 

[Chris Dunaway]

Hello

I have a form that containes a lot of controls including panels those
contain other controls. Is there a way to simply get all contained controls
either directly or indirectly through other containers such as panel or
GroupBox controls?

Use a recursive function and start with the form:

private void button1_Click(object sender, EventArgs e)
{
enumerateControls(this.Controls);
}

private void enumerateControls(ControlCollection container)
{
foreach(Control c in container)
{
//Do something with control here

//Now check this control to see if it has any controls of its own
if (c.Controls.Count > 0)
enumerateControls(c.Controls);
}
}

Hope this helps and watch for typos

 

[rowe_newsgroups]

Or for the C# impaired here's the same code in VB syntax

' Air code warning!

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
enumerateControls(Me.Controls)
End Sub

Private Sub enumerateControls(ByVal container As ControlCollection)
Dim c As Control
For Each c In container
' Do something with control here

' Now check this control to see if it has any controls of
its own
If c.Controls.Count > 0 Then
enumerateControls(c.Controls)
End If
Next
End Sub

Thanks,

Seth Rowe

 

[rowe_newsgroups]

Or for the C# impaired here's the same code in VB syntax

' Air code warning!

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
enumerateControls(Me.Controls)
End Sub

Private Sub enumerateControls(ByVal container As ControlCollection)
Dim c As Control
For Each c In container
' Do something with control here

' Now check this control to see if it has any controls of
its own
If c.Controls.Count > 0 Then
enumerateControls(c.Controls)
End If
Next
End Sub

Thanks,

Seth Rowe

 

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

Please do not crosspost to so many groups, you have included both C# and VB
ngs.

Post to the group you think will have more in common with your problem and
post to others if not answer is received.

 

[Stoitcho Goutsev \(100\)]

Hamed,

You need to traverse the control tree; each control has Controls property
where you can find its children. There is no method that gives you all
controls in a flat list.

 

[Guest]

Here's an example in C# using an iterator. It'll return all controls in their
front to back order (z-order, not tab-order):

public static IEnumerable<Control> GetAllControls(Control parent)
{
foreach (Control child in parent.Controls)
{
yield return child;
foreach (Control grandChild in GetAllControls(child))
yield return grandChild;
}
}

and you can use it like this:

foreach (Control c in GetAllControls(form))
Trace.WriteLine(c.Name);

Hope this helps.

Regards
Henrik