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DropDown change event in WebPart

Asked By: Jordan Lawson Date: Jan 17, 2010 Category: Sharepoint Views: 800

I have created a custom web part with a drop down. How can I specify the
page to post back once the drop down selected index changes? My code
looks something like this

_myDropDown = New HtmlSelect

_myDropDown.Items.Add("0")

_myDropDown.Items.Add("1")

_myDropDown.Items.Add("2")

AddHandler _myDropDown.ServerChange, AddressOf
_myDropDown_IndexChange

Controls.Add(_myDropDown)

The post back does not happens. Please advise.

Tagged:dropdown change event in webpart

4 Answers Found

Answer #1 Answered By: Bernice Puckett Answered On: Jan 17, 2010

Didi you try

this.DropDownList1.AutoPostBack = true;

DropDownList1.SelectedIndexChanged += new
EventHandler(DropDownList1_SelectedIndexChanged);

Answer #2 Answered By: Mackenzie Lewis Answered On: Jan 17, 2010

There is no autopostback property related with the control. My code
resides in the createchildcontrols method. Let me know if there is
something I am missing.

Answer #3 Answered By: Kurt Gilbert Answered On: Jan 17, 2010

Are u using the DropDownListBox Server control? If you
are using that one you should have AutoPostBack
property.

Answer #4 Answered By: Jaya Deoghar Answered On: Jan 17, 2010

Also make sure that the control is added to the controls collection. If
the control is not added to the controls collection the postback will
not fire.

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