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Where to Call RegisterArrayDe claration in Composite Server Control?

I am authoring a composite server control (inheriting from
System.Web.UI.C ontrol) that uses a good chunk of client side javascript. To
make this work I need to call RegisterArrayDe claration and in a manner
simmilar to the following:

Page.RegisterAr rayDeclaration(
dataObjectArray Name,
string.Format(
"{{ spanID:'{0}', calendarID:'{1} ' }}",
spanID,
calendarID));

Where SpanID and CalendarID are the ClientID values of two controls added
when overriding Control.CreateC hildControls. Normally one would call
RegisterArrayDe claration() in OnLoad, but this occurrs before
CreateChildCont rols and the ClientID values would not be available at that
point. (I am presuming that the ClientID becomes available once the span
and calendar controls are added to my composite control's controls
collection, correct?). So my question is where can I call
RegisterArrayDe claration? Can I call it any time prior to rendering (such
as in OnPreRender?).

I also need to call RegisterStartup Script and RegisterClientS criptBlock as
well, though these I can still call in OnLoad since they do not need the
ClientID values of the child controls. Yet I am currious as to whereelse I
may be able to safely call these methods as well.

--Ken
Nov 19 '05 #1
0 1237

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