AJAX :: Update Panel When It Contains The More That One Postback Elements?

Nov 26, 2010

i am using the update panel in my application in that i had added 3 dropdownlists,all of them are having the selectedIndexchange event so, once you select any item in the dropdown list i had to some operation, but the problem is that if i change the any dropdownlist in the update panel all the dropdownlists selected index methods are getting called, but what i was expecting is that when i select any item in first dropdonwlist that corresponding selectindex has to be executed not the other ones, so anybody had experienced this kind of problem let me know?

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[Code]....

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[Code] ...

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[Code]....

[Code]....

[Code]....

[Code]....

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In [URL] .... if I remove input:file and put asp:file then it will be possible ... here's all code:

using System;
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using System.IO;
using System.Web.UI;
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[Code] ....

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[URL]

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When an asynchronous postback happened inside update panel, another postback happens also for MasterPage not only update panel embedded page .

I want to prevent this MasterPage postback .

is this possible ? think like i have a MasterPage

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i want to prevent this (it should not also load MasterPage Page_Load)

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Is something like this possible?

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Next
End Sub

I am new to the concept and feel like there must be something really easy that I am missing.

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