Asp:DropDown - get selected item

  • Thread starter Thread starter Ronny Mandal
  • Start date Start date
R

Ronny Mandal

Hi!

I have an .aspx with some controls that are created dynamically. The
items are populated into the box by setting the DataSource-property to
a list. In addition I specify the text and value with DataTextField
and DataValueField; this works as expected.

However, my problems arises when I want to read the selected value
(i.e. after a postback caused by a change in the DropDown), the
selected item is always the first item in the DropDown. I do call the
DataBind-method, I believe that this might cause this.

My idea is to parse the selected value for a pattern and perform
operations on background of what this contains.

Anyone who know how to accomplish this?


Regards,

Ronny Mandal
 
Ronny Mandal said:
However, my problems arises when I want to read the selected value
(i.e. after a postback caused by a change in the DropDown), the
selected item is always the first item in the DropDown. I do call the
DataBind-method, I believe that this might cause this.
Click to expand...

This typically hapens if you do the databinding in Page_load without
enclosing the code in an "if (!IsPostBack)". Since the Page_Load always
executes during every postback before the SelectedIndexChanged event, the
dropdown loses the selecteditem (because it is databound again) before you
can read it in the SelectedIndexChanged event.
 
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