Control.CreateControlCollection Method
Definition
Important
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Creates a new ControlCollection object to hold the child controls (both literal and server) of the server control.
protected:
virtual System::Web::UI::ControlCollection ^ CreateControlCollection();
protected virtual System.Web.UI.ControlCollection CreateControlCollection ();
abstract member CreateControlCollection : unit -> System.Web.UI.ControlCollection
override this.CreateControlCollection : unit -> System.Web.UI.ControlCollection
Protected Overridable Function CreateControlCollection () As ControlCollection
Returns
A ControlCollection object to contain the current server control's child server controls.
Examples
The following code example overrides the CreateControlCollection method to create an instance of a CustomControlCollection
class, which inherits from the ControlCollection class.
// Override the CreateControlCollection method to
// write to the Trace object when tracing is enabled
// for the page or application in which this control
// is included.
protected override ControlCollection CreateControlCollection()
{
return new CustomControlCollection(this);
}
' Override the CreateControlCollection method to
' write to the Trace object when tracing is enabled
' for the page or application in which this control
' is included.
Protected Overrides Function CreateControlCollection() As ControlCollection
Return New CustomControlCollection(Me)
End Function
The following code example uses the CreateControlCollection method in a custom server control override of the CreateChildControls method. The new collection is created, and then populated with two child controls, firstControl
and secondControl
.
protected override void CreateChildControls()
{
// Creates a new ControlCollection.
this.CreateControlCollection();
// Create child controls.
ChildControl firstControl = new ChildControl();
firstControl.Message = "FirstChildControl";
ChildControl secondControl = new ChildControl();
secondControl.Message = "SecondChildControl";
Controls.Add(firstControl);
Controls.Add(secondControl);
// Prevent child controls from being created again.
ChildControlsCreated = true;
}
Protected Overrides Sub CreateChildControls()
' Creates a new ControlCollection.
Me.CreateControlCollection()
' Create child controls.
Dim firstControl As New ChildControl()
firstControl.Message = "FirstChildControl"
Dim secondControl As New ChildControl()
secondControl.Message = "SecondChildControl"
Controls.Add(firstControl)
Controls.Add(secondControl)
' Prevent child controls from being created again.
ChildControlsCreated = True
End Sub
Remarks
Override this method in a custom server control if you have created a collection object that is derived from the ControlCollection class. You can then instantiate that collection class in the override of this method.
Applies to
See also
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