Refreshing a portlet after RegisterForEvent fires

Question

Hello,
I have two ASP.Net/C# portlets, and I can properly get one of the portlets to "talk" to another portlet using the document.PCC.RegisterForEvent and document.PCC.RaiseEvent methods in Javascript.
But what I need to do is on the receiving portlet where I'm using document.PCC.RegisterForEvent is to capture the argument I'm passing in (I can do that) and then refresh just that portlet so I can do a database call in the code behind and show some related information from the database in the receiving portlet.
I haven't been able to find any examples of this, all the examples I've seen in the development guide seem to be just using javascript to send arguments to another portlet (Adaptive portlets) but not to refresh the receiving portlet so some C# code can be called.
Any help is greatly appreciated.
Regards,
David

Answer 1

Hi David,
We have succeeded in doing this. In the event handler function of the receiving portlet, we get a handle on a hidden form control. We then put the argument value that has been received into this hidden form control. Finally we trigger a postback. The hidden field is a server-side control, so now the received value is available on the server-side for you to work with.
Here's an example:
// Function that listens for EmployeeSelected PCC events and gets
// content for the portlet based on the Employee id
handleEvent<%=Session("portletID")%> = function(EmployeeId)
myTABSUpdate<%=Session("portletID")%>(EmployeeId);
// Function that handles the response and redraws
myTABSUpdate<%=Session("portletID")%> = function(EmployeeId)
// Get the container whose contents we want to refresh
var container = document.getElementById('txtEmpNo');
container.value = EmployeeId;
enablePostBack<%=Session("portletID")%>();
The embedded instances of "Session("portletID")" just allow us to ensure the javascript functions are uniquely named.
Hope this helps.
Regards,
Charles