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Formview + EditItemTemplate + Bind + PageLoad + Prerender = Confused

Posted By:      Posted Date: August 26, 2010    Points: 0   Category :ASP.Net

I am working with a formview edititemtemplate.  Currently in my page load, i have some stuff that would show or hide certain panels based on dropdownlist values.  These dropdown values get binded during page load.  I need to be able to change the values/dropdowns, without rebinding the old data, and updating the visibility of the panels based on predefined rules.

I have experimented with putting my formview.databind() in page load if isnotpostback, in prerender, in prerender if isnotpostback.   I have tried my rules (ex if ddlState.selectedvalue = "DE" then pnlDelaware.visible = "true") in the page load, and the page render.   I'm just not sure how to get the stars aligned here.

The closest i have come is having the databind in the pageload if notispostback, and the rules in the prerender.   However I get an error "dropdownlist has a SelectedValue which is invalid because it does not exist in the list of items.


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