Sounds promising. Btu if my "txtBase" can "implement" the interface, they can't "inherit" from textbox, can they?


>I would define an interface IIOEnable and have your subclassed controls implement that interface
>
>then - excuse the syntax - vb and c# mixture
>

>foreach ( Control ctrl in Me.Controls )
>{
>    IIOEnable ctrl1 = ctrl as IIOEnable ;
>    if( ctrl1 != null )
>         ctrl1.ioEnable(value);
>
>}
>

>
>
>

>

>>I have subclassed textboxes, panels and buttons. For each of those controls, I wrote an IOEnable method. I would like my (subclassed) form to execute these methods. I came up with something like this, which works, but am wondering if there is not a more generic approach to this, because now, each time I subclass a control I have to kind of "register" it here and in every container.
>>

>>For Each ctrl As Control In Me.Controls
>>     If TypeOf ctrl Is txtBase Then
>>         Dim ctrl1 As txtBase = ctrl
>>         ctrl1.ioEnable(value)
>>     End If
>>     If TypeOf ctrl Is pnlBase Then
>>         Dim ctrl1 As pnlBase = ctrl
>>         ctrl1.ioEnable(value)
>>     End If
>>     If TypeOf ctrl Is btnBase Then
>>         Dim ctrl1 As btnBase = ctrl
>>         ctrl1.ioEnable(value)
>>     End If
>> Next
>>

>>
>>In VFP this looked like this
>>

>>for each o in this.Controls
>>        if !pemstatus(o,'IOEnable',5)
>>            loop
>>        endif
>>        o.IOEnable()
>>    endif
>>endfor
>>