ControlCollection.Contains(Control) Method
Definition
Important
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Determines whether the specified server control is in the parent server control's ControlCollection object.
public:
virtual bool Contains(System::Web::UI::Control ^ c);
public virtual bool Contains (System.Web.UI.Control c);
abstract member Contains : System.Web.UI.Control -> bool
override this.Contains : System.Web.UI.Control -> bool
Public Overridable Function Contains (c As Control) As Boolean
Parameters
- c
- Control
The server control to search for in the collection.
Returns
true
if the specified server control exists in the collection; otherwise, false
.
Examples
// Create an event handler that uses the
// ControlCollection.Contains method to verify
// the existence of a Radio3 server control in
// the ControlCollection of the myForm server control.
// When a user clicks the button associated
// with this event handler, Radio3 is removed
// from the collection.
void RemoveBtn_Click(Object sender, EventArgs e){
if (myForm.Controls.Contains(Radio3))
{
myForm.Controls.Remove(Radio3);
}
}
' Create an event handler that uses the
' ControlCollection.Contains method to verify
' the existence of a Radio3 server control in
' the ControlCollection of the myForm server control.
' When a user clicks the button associated
' with this event handler, Radio3 is removed
' from the collection.
Sub RemoveBtn_Click(sender As [Object], e As EventArgs)
If myForm.Controls.Contains(Radio3) Then
myForm.Controls.Remove(Radio3)
End If
End Sub 'RemoveBtn_Click
Applies to
See also
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