AJAX :: Using DropDownList To Do Update, Autopost Back Required?
May 22, 2010
I have a script that I am trying to trigger an AJAX AsyncPostBack and have been trying to figure out how to get it to work. After searching the internet for a while I noticed something on all the examples. On the asp:DropDownList they use the autopoastback=true tag. If I add it to my script it works fine, if I remove it it stops working. So my question is why is the autopostback required or if it is not what might I be missing? BTY Everything is in C# and .Net 4
ASP.Net From Page
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Jan 5, 2011
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[Code]....
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[Code]....
the designer code is as below
[Code]....
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[code]...
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[code]....
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Oct 15, 2010
Since last week I've had a really odd issue with PageMethods and the back button which i've never seen before.
Essentially, I have a 'home page' which on document.ready (using jQuery), loads some data through PageMethods, and then renders a list - from which you can click through to a details page about the item. In general use, it works fine. However, using the back button after clicking through (ie: going back to the home page), it throws a PageMethods error. The browser's 'authentication required' prompt appears, and if you click cancel, the server returns a 401. The error returned by PageMethods on the client side is 'authentication failed'.
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below is the code
[Code]....
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Jun 29, 2012
I have problem with dropdownlist I can't update gridview in popup. When i click edit everything was show me but I can save. If Idelete dropdown and leave textbox it was save.
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[Code] .....
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Nov 4, 2013
I am trying to refresh updatepanel using dropdownlist but facing problems.
<asp:DropDownList ID="ddlClass" EnableViewState="true" AutoPostBack="false" class="input-large span10" runat="server" onchange="loadAllDefaults();" Style="width: auto;">
</asp:DropDownList>
Above is the code of dropdownlist
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ddlClass" />
</Triggers>
<ContentTemplate>
<asp:Repeater ID="rep1" runat="server">
[Code] ....
This is updatepanel code. as shown in the code, i am referring to ddlClass in triggers which already calls a javascript function loadAllDefaults();
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How can i do this? I have created a function in c# code in backend but I am not able to call both functions together!
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Jan 27, 2010
i m using an update panel on a page which contains a listview. the listview (in each row) has a fileupload control and a dropdownlist.
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everytime i change the selection in the dropdownlist, the file upload control clears.
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[URL]
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I have a gridview that does a select statement against a sql database. What I want to do is have the data in the gridview refresh upon either hitting the back button or the forward button.
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