System.Web.UI Namespace   ControlCollection Class

Returns the number of child controls for a given ASP.NET server control.

This property can only be used programmatically; it cannot be set when declaring the control.

The property is read-only with no default value.

ICollection.Count

Use the Count property to determine the number of Control objects contained in the ControlCollection of a specified ASP.NET server control. Count is commonly used when iterating through the child controls of a parent control to determine the upper bound of a loop.

The following example demonstrates how to use the Count property to iterate through a control's ControlCollection object. The use of the Control.HasControls property verifies that the control has child controls. If HasControls returns false, the remaining code does not run.

if ( HasControls ( ) ) {

   for ( int i = 0; i < Controls.Count; i++ ) {
      Controls [ i ].RenderControl ( writer );
   }
}

If HasControls ( ) Then
   Dim i As Integer
   For i = 0 To Controls.Count - 1
      Controls ( i ).RenderControl ( writer )
   Next i
End If

if ( HasControls ( ) ) {

   for ( var i : int = 0; i < Controls.Count; i++ ) {
      Controls [ i ].RenderControl ( writer );
   }
}

ControlCollection Members