Hi,

I am using the WebDropDown control v11.1, and I`ve set the following properties:

AutoFilterQueryType                                          : Contains
AutoPostBack                                                     : False
AutoPostBackFlags - SelectionChanged     : On
AutoPostBackFlags - ValueChanged            : Off
AutoSelectOnMatch                                           : False
EnableAutoFiltering                                          : Client
StyleSetName                                                    : RedPlanet
Width                                                                   : 200px

All the other properties are set to default.

This is my problem: When I select an item from the list, I can for example set a Label to the selecteditem.text value (in the WebDropDown1_SelectionChanged event handler).

But after selecting a value, (and the the postback) when I edit the value in the WebDropDown to trigger the autofiltering, then the WebDropDown immediately performs a postback (on the moment of editing the text)! and in the WebDropDown1_SelectionChanged eventhandler, I get the a NullReferenceException (object reference not set blah blah) on reading the value of the SelectedItem (cause there is no selected item, i know)...

But please tell me, why does the WebDropDown perform a postback?? This is how to reproduce it:

- Create a ASP.NET 4 WebAplication
- Drag a WebDropDown and a label on the form
- Set the properties as shown above
- In de Page_Load: add a few items to the webdropdown
- In the SelectionChanged Eventhandler of the webdropdown, set the Text property of the label to the SelectedValue.Text property of the WebDropDown
- Build and Run the app
- Select an item from the dropdown
- See how the label`s text changes
- AND NOW: edit the text in the DropDown (you should expect the autofiltering is triggered) and like you can see, the DropDown performs a postback without a selectedvalue... why why why???

please help me...? :)

thanks a lot!