ASP.NET - Update Panel textBox text Change Event

Hi

I am having a textbox in the update panel.
I set Autopostback to true for textbox.For first time textchange event is firing correctly .For the second time it is not working

Plz help

hi,

set postback trigger for your textbox

check the below code

<asp:UpdatePanel ....>

---
---
 <Triggers>
    <asp:PostBackTrigger ControlID="ControlName" />
    </Triggers>

</asp:UpdatePanel>

My textbox is in inner grideview control.So i can load it at runtime

So i given

ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(objTxtBox);

in this textBox change event i am opening Modalpopup.I need to show some values in the popup controls if i use the above condition i am unable to display the values.