Web Forms :: FindControl SelectedItem In Dynamic DropDownList

Jun 5, 2010

First post here, I usually try not posting until I am completely lost. I have a webform that gets a dynamic dropdownlist added to a placeholder in a method during pageload. During a submit of the page, I want to be able to get the selectedItem in the DropDownList that was also added dynamically from a DB. I know the ID of the DropDownList, and I know the Value of all the ListItems. Although when I am trying to use FindConrol(ID), and assign it to a DropDownList, the Control comes back Null and I get an error saying "Object Reference not set to and Instance of an Object", I believe because its not finding the control.

[Code]....

Can anyone show me how to use this to get access to the properties of the dynamic DropDownList properties, especially the ListItems within.

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[Code]....

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Forms Data Controls :: DropDownList With Dynamic Datasource In EditItemTemplate In Gridview?

Mar 2, 2011

I have two embedded dropdown lists in Gridview control. One gives you business channel options and the other represents products depending on the business channel selected.I am trying to use different data sources for product dropdown list depeding on what the user selected from the business channel drop down list. How could I do this. Here is my current code:

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Forms Data Controls :: Unable To Get Dynamic Generated Dropdownlist Item

Sep 22, 2010

i'm using asp.net 3.5 and what im trying to do is create the dropdownlist item dynamically base on value in each datarow, then user select from dropdownlist and click button to postback, when postback system should be able to know what value has been selected by user. the problem with following code is during postback, event of "OnItem_Created" get fired and e.Item.DataItem return null, therefore the dropdownlist will not get populated with the items and that caused the dropdownlist unable to return value selected by user. am i missing anything? is "OnItemCreated" the best place to dynamic create the dropdownlist item?

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Forms Data Controls :: How To ListView SelectedItem SelectedItemChanged

Apr 11, 2010

I give up. After many hours of scouring the internet, cannot find a simple example of binding a simple object to a ListView and figure out which one is selected in the SelectedIndexChanged event.

Many people talk about the SelectedItem and SelectedItems properties; which somehow, according to intellesense, do not even exist on my ListView. I must have a "special .Net build" :)

If I have a collection of "Books" bound to a ListView. How do I get the "selected book" in the SelectedIndexChanged event? (Multiselect = false)

I would think it's something like:

Book MyBook = (Book)ListView1.SelectedItem
I'd even settle for
Book MyBook = (Book)ListView1.SelectedItems[0]

No such luck. My very special ListView does not seem to have either property.

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