Question

It is .net 2.0 here, not MVC, and I am crap at asp forms.

I have a page with user controls on it. When I click on something in the page, I want to load the usercontrol based on a parameter from the page.

I cannot do it.

In my page’s FaultTree_Clicked, I get the value, then:

• I tried exposing a property on the child user control to set the value, which i set in FaultTree_Clicked, it gets forgotten.

• I tried saving it to Session[‘mykey’], and loading Session[‘mykey’] in the control’s Page_init… the value is blank.

• I tried saving it to ViewState[‘mykey’], and loading ViewState[‘mykey’] in the control’s Page_init… the value is blank.

EDIT: more specific info:

Here is a cut down version of what the page(MyFault) looks like:

<form id='form' runat='server'>  <div id='faulttree'>    <asp:TreeView ID='FaultTree' ......>  </div>  <uc1:_DefectDetail ID='DefectDetail' runat='server' Visible='true' EnableViewState='true' /> </form> 

And there is a method on the pages code behind ‘FaultTree_SelectedNodeChanged()’.

When that method is hit, I want to load/show the DefectDetail control. The DefectControl requires a faultid, which comes off the Tree, which I successfully get in the SelectedNodeChanged method. I cannot get the faultid into the defect control.

Answer 1

This has to do with ASP.NET page lifecycle. By the time the click event fires, the control’s init event has already happened.

In order to better assist you, please provide a more detailed explanation of what the FaultTree control is, what is the desired result and some sample code.

UPDATE:

Instead of a public property, you can simply create a public method in the control that does the desired action and invoke it from the FaultTree_SelectedNodeChangeEvent.

Example (for a public method named Refresh):

_DefectDetail.Refresh(object data);