AJAX :: Using Textbox Onchange To Trigger Updatepanel / Gridview?

May 25, 2010

How can I get a gridview (that is inside an update panel) to update/filter whenever something it typed into a related textbox outside that panel..( possibly in another update panel)?

As in Google. When you start typing, it starts autocompleting for you by looking up words in the background using the text you've typed.

I want, in effect, for a user to start typing in a textbox (say "Order #" textbox) and each time a character is typed, to trigger an update to a gridview that has a 'search param' in it's SQL Datasource SP that plugs the textbox's text into the where clause of the select inside the SP...

make sense? I have the SP and all other related code, I would just need to know how to create a JS function (preferably via server-side using something like:


Rather than hardcoding client-side JS....


AJAX :: Using Textbox Ontextchanged To Trigger Gridview / Updatepanel?

May 25, 2010

How can I get a gridview (that is inside an update panel) to update/filter whenever something it typed into a related textbox outside that panel..( possibly in another update panel)?

As in Google. When you start typing, it starts autocompleting for you by looking up words in the background using the text you've typed.

I want, in effect, for a user to start typing in a textbox (say "Order #" textbox) and each time a character is typed, to trigger an update to a gridview that has a 'search param' in it's SQL Datasource SP that plugs the textbox's text into the where clause of the select inside the SP...

make sense? I have the SP and all other related code, I would just need to know how to create a JS function (preferably via server-side using something like:


Rather than hardcoding client-side JS....

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AJAX :: Onchange Event For Textbox Not Firing Inside Updatepanel?

Oct 24, 2010

i am developing the webpage using Visual 2008.In that i have i am using update panel and displaying values in the textbox bby using webservices from sql database.I need this thing if textbox values changes i need to change the backkground color of the text box also, so that user can easily identify which textbox values are changing. like this i have 5 more text boxes control in the same form .i have tried but i could not able to get done. i have written javascript code on change event of the text box it does work.


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AJAX :: ImageButton In TemplatField In GridView As Async Trigger For UpdatePanel?

May 12, 2010

in my Site i have 3 updatepanels.In the 1 is the gridview. with templatefield in this is the imagebutton. ImageButton has commandname "Select" want to register the ImageButton as AsyncTrigger for the other Updatepanels 2 and 3

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AJAX :: How To Trigger Updatepanel Postback From Another Updatepanel

Mar 4, 2011

I have a web user control with one updatepanel (pnlUpdate_2), some controls and one apply button. I display the web user control as a modalpopup in my default page. In my default page i have an updatepanel (pnlUpdate_1) with a gridview and I modify that gridview with the apply button of the web user control. The web user control is for made a custom search of the gridview data. I have a problem with both updatepanels. If I set the updatemode as always in one of them (pnlUpdate_1) and the other as conditional (pnlUpdate_2), the pnlUpdate_1 make a postback in the pnlUpdate_2; I'm not an expert on this but I think that's why the pnlUpdate_2 disappear and reappear after postback of some controls in that updatepanel (not the apply button, it close the modal after postback). I try all the combinations and the problem persists. So I put both updatepanels as conditional and in some way it works; now the problem is that when I click the apply button in pnlUpdate_2 to modify the gridview in pnlUpdate_1 the pnlUpdate_1 not made the postback I get the pnlUpdate_2 postback when I use some control inside the pnlUpdate_1.

How can I postback the pnlUpdate1 from pnlUpdate_2 with the apply button?

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AJAX :: Setting UpdatePanel Trigger Control ID To GridView Template Control?

Sep 26, 2006

I have a linkbutton control inside a template column of a gridview control. I'm trying to use that as a trigger to update an updatepanel control on the page, however atlas can't find the control by the simple ID "linkButton1". Is there a syntax that will allow me to specify the LinkButton control inside the gridview column template?

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AJAX :: Binding ListView On Onchange Event Of Textbox (search Operation)?

Nov 4, 2009

I am able to bind ListView control based on some search terms with paging and all on click event of a button. Now I want to bind it on the onchange event of particular textbox means @ client side only. I have binding logic written on serve side. What should I do to bind the control @ client side in this scenario.

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Trigger UpdatePanel From A GridView TemplateColumn Click?

Apr 3, 2011

I have the following case, all my controls on an update panel on the page.

one of these controls is a grid view , this grid view contains a check box on the header template field( to make a check all) . the autopostback is true but when the check changed no thing is happen , the update panel has a trigger asynchronous post back for the gridview.

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AJAX :: UpdatePanel Trigger Stopped Working?

Dec 21, 2009

I have store town and stores from database, and when i select the store town it gets all the stores in that town. it works fine for 1st selection but if i select second town it still shows the stores for 1st one and here all stops working.

The store town is outside the update panel and stores drop down is inside and using trigger (AsyncPostBackTrigger) to populate the stores for the town.I when through debug process and all looks ok, then i removed the update panel and used the standard postback and all works fine the values changes properly, then added the updatepanel but both store town and stores inside the update panel and all work fine BUT as soon as removed the store town outside the updatepanel and added the trigger it stopped working.

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AJAX :: How To Trigger Full Postback Within Updatepanel.

Jan 26, 2007

Is it possible to trigger a full page postback from within an update panel?

I have a gridview, with row selection enabled, within an update panel.

When the user clicks the select button I need to have the full page posted back, instead of an async postback.

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AJAX :: Make Each ListItem Be A Trigger For An UpdatePanel?

Jun 6, 2010

I have a problem and i have been stuck on it for a while now: I have a ListBox generated dinamically on the page at the first init of the page. That part of the page will never make a postback again while being used.

Say i have 10 UpdatePanels in the same page and there will be a maximum of 10 ListItems in my ListBox. How can i make every ListItem in the ListBox be a trigger for my existing UpdatePanels , so that when i doubleclick one ListItem , the apropiate UpdatePanel will be updated ? Or if you have any other close solutions.

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AJAX :: Textbox In Headertemplate Gridview Lost Text In Updatepanel?

Sep 6, 2010

I write code in asp.net I always solve issues by finding solutions with other members who have the problem before me. But this time I don't know how to do...

This is my problem :

I have a gridview inside an updatepanel and i modified some headers in order to filter the collection. This worked but when my updatepanel is updating, my textbox for the filter clear the value (the text) and lost focus.

This is my code :



The function FilterText(this) only set a timeout before fire postback.

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AJAX :: Possible To Have A Control From Separate ContentPlaceHolder Trigger An Updatepanel

Oct 18, 2007

I am using multiple ContentPlaceHolders in my Master Page. I have an UpdatePanel in ContentPlaceHolder2 with mode=conditional. I have a button (Button1) in ContentPlaceHolder1 that is a trigger for the updatepanel. However, since they are in separatecontentplaceholders I am getting an error:A control with ID 'Button1' could not be found for the trigger in UpdatePanel 'up1'.Is it possible to have a control from a separate ContentPlaceHolder trigger an updatepanel?

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AJAX :: Trigger An Updatepanel From Inside A Listview Control?

Dec 4, 2010

I have a CheckBox that is located inside a SelectItem Template. The CheckBox has Autopostback= true. Located outside the list view is a label. When the CheckBox is checked, I would like to trigger an the Updatepannel that includes the label. Instead I get an error message "'CheckBox1' could not be found for the trigger in UpdatePanel 'UpdatePanel3'. The code snippet is as follows:

Asp.net Markup:


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AJAX :: UpdatePanel Trigger Does Not Work With Master Page

Sep 24, 2010

I got a aspx page using a master page. In the aspx page, i got multiple Content section: [Code]....

What I was trying to do is to perform a post back on Content Id "Content2" with a event trigger by both of the drop down list. The problem here is the drop down list is inside "Content 1".The error I got is: [Code]....

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AJAX :: Trigger UpdatePanel Refresh After Page Loads?

Feb 16, 2010

I have seen this discussed in number of topics, but so far nothing to address my specific issue. I want to display the page the client, and then trigger an updatepanel refresh that will populate with data that takes 3-4 seconds to load (the rest of the page loads very fast). At the same time I want to display "...Loading..." text using UpdateProgress control.

Everything is working below in the sample code. However, UpdateProgress will not display unless the button is actually clicked by the user. In real production scenario I would hide the button. To invoke the immediate UpdatePanel refresh I trigger the click via Javascript. I have also tried "__DoPostBack" without success.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TestUpdate.aspx.cs" Inherits="TestUpdate" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> [code]...

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AJAX :: Adding Trigger To UpdatePanel From Content Page?

Sep 10, 2010

I got an updatepanel which contains a normal panel on MasterPage. The updatepanel does not contain content place holder. On the content page, I have to add triggers to updatepanel for buttons that are dynamically created on "page_load" event. The problem is that, since the page_load event of content page is being called before master page's page_load event, UpdatePanel is not being created. So that, whenever i try to add triggers in page_load event of content page, i got an error like "A control with ID 'ctl00$editableContent$ctl42' could not be found for the trigger in UpdatePanel 'up1'."

The code below is for adding triggers to updatepanel for buttons.

MasterClass master = (MasterClass)Page.Master;
AsyncPostBackTrigger trig = new AsyncPostBackTrigger(); [code]....

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AJAX :: Couldn't Find Control For Trigger In UpdatePanel

Mar 12, 2010

I've got a page with two ContentPlaceHolders. In first there is UpdatePanel with GridView. In second I located DropDownList which is trigger for UpdatePanel.

<asp:UpdatePanel ID="stanUpdatePanel" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true" >
GridView & other stuff
<asp:AsyncPostBackTrigger ControlID="ATDropDownList"
EventName="SelectedIndexChanged" />

Running the page causes error: "Control with ID 'ATDropDownList" could not be found for the trigger in UpdatePanel". I thought it was because the ATDropDownList is located inside ContentPlaceHolder. So I changed ATDropDownList's ID to UniqueID as follow:

<asp:AsyncPostBackTrigger ControlID="ctl00$ContentPlaceHolder2$ATDropDownList" (...)>

Everything works good, but I want to change it from page's code-behind. I tried to put


somewhere in code, but without luck so far.

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AJAX :: Programmatically Adding A Postback Trigger To An Updatepanel?

Sep 11, 2008

I have a situation where I need to dynamically assign/create a postback trigger to an updatepanel. I have a grid that contains a column with a linkbutton inside. I want all grid functions like sorting and paging to function as expected doing partial page callbacks. I only want the column containing the linkbutton to do a full postback. I must be able to reference the linkbutton as it repeats for each row. I understand how to access this link button for each row by handling row/cell creation events. That's not the problem. Assuming I have a reference to the linkbutton here is a snippet of code:


The above code compiles correctly and generates no runtime errors. The problem is that I still get an asyncpostback for the linkbutton. I need a full postback. I have successfully registered AsyncPostBackTrigger's in other code using the below technique:


This code works perfectly. I tried duplicating the same technique for PostBackTrigger trigger and as I have explained it is not working.

One additional note to add to this. The above code(that works) for the AsyncPostBackTrigger was done by handling the

Page_InitComplete(...) method. It is not possible to do the same with the Postback trigger.

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AJAX :: Play Sound On UpdatePanel Trigger / Event?

Dec 21, 2009

I've got an UpdatePanel that auto-refreshes every 30 seconds, it pulls data from at a database, and I want to play a sound if there is new data to display, and I have no idea where to start with this one..

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AJAX :: Can Trigger The MasterPage Updatepanel When The Method Is Called

Oct 29, 2009

I have a Master Page with an Updatepanel, the ChildrenAsTriggers is set to False. I have to Update that panel to show an error message, I don't have any control to update the panel so I have a Method that calls Updatepanel.Update in the Master Page, inside this method there is an If that decides to show or not the error message. In my Content Page I also have an update panel that execute the MasterPage Method.

If The Content Page udpates and the MasterPage Method show the error message, every time that the content page Updatepanel updates will update the MasterPage updatepanel.

How can I do to only trigger the MasterPage updatepanel when the method is called and not every time after the MasterPage updatepanel have been updated once?

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AJAX :: Dynamic UpdatePanel AsynchPostBack Trigger Not Working

Mar 7, 2011

I have a problem with my AsynchPostback trigger. It does a postback but won't do the Button click event.


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AJAX :: Selecting Listbox In Updatepanel To Trigger Modalpopup?

Aug 17, 2010

I have a databound listbox that is inside an update panel. When selecting an item in the listbox, I want it to populate labels in a panel that are displayed in a modalpopup. When I click on the listbox, I can see that the data is passed to the labels and the modal.Show() is executed by stepping through the code. However, the modalpopup comes up but with no data.


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AJAX :: UpdatePanel Won't Properly Trigger If Time Passes?

Apr 27, 2010

UpdatePanel Won't Properly Trigger If Time Passes?

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AJAX :: Pass Parameter And Trigger UpdatePanel Update?

Feb 22, 2010

I need to render a chart control inside UpdatePanel, I have done this part.

The difficult part is that now I need to pass parameter/parameters to server side and grab it in code-behind

so that I can use this information to render the chart.

The parameter/parameters can only be grab in client side by javascript since it is jQuery.data().

I am trying to work around this by saving it to a hidden field, that is not neat though.

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AJAX :: UpdatePanel Trigger Doesn't Recognize Control?

Jan 1, 2011

I have a UpdatePanel with trigger like this:


The ListView will always return one result.

When I load the page I get: A control with ID 'btn' could not be found for the trigger in UpdatePanel 'upPanel'.

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AJAX :: UpdatePanel PostBack Trigger - Control Inside InsertItemTemplate?

Dec 31, 2009

Does anyone have any knowledge or useful links regarding this? In my scenario, there is a fileUpload inside the InsertItemTempalte of a detailsView which is (well was, not anymore) contained inside an UpdatePanel. I've ascertained that the fileupload needs a full postback, so I tried to set up a post back element in
the triggers. However the controlID references a file upload in the InsertItemTemplate. when I tried to compile, the controlID was unknown. It's no big deal if the UpdatePanel gets scrapped. Nice to know if it can be done, though.

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AJAX :: Trigger UpdatePanel Via Javascript Doesn't Work When Using A MasterPage?

Apr 22, 2010

I have an UpdatePanel on the page which I'd like to trigger using javascript.First of all my code perfectly works if it's in a website not being inheriting from a masterpage. Now when you put exactly the same code into a website which inherits from a masterpage, the UpdatePanel wouldn't get fired anymore.

Here's the code (.aspx) [Code]....

Here's the code (.cs) [Code]....

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AJAX :: Set The Trigger To Trig When TextBox Lost Focus?

Jun 18, 2010

updatePanel(inside this updatePanel i have below control)
SqlDataSource(with select command that has Parameter and Gets it's Value From TextBox)

now i want when user inter data in the TextBox and change the Focus to other control the UpdatePanel Update.

(i want my updatePanel Update when focus of TextBox Change)

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AJAX :: Master Page Updatepanel - Want O Use Trigger In Child Page

Aug 20, 2010

Iam using masterpage concept and iam using ajax updatepanel in master page , i want o use trigger in child page. to partial postback of dropdownlist.

my questions is how to use trigger and updatepanel in child page called frmcustomer.aspxand my master page name is master.asxpx

below is my child page

<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile ="~/Test.master" CodeFile="frmMscustomer.aspx.cs" Inherits="frmMscustomer" %>

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AJAX :: Master Page - Web Service - Characters On Textbox Doesn't Trigger Autocomplete

Sep 16, 2010

I have a text box and ajax autocomplete control extender in my Master Page that it is not working at all. When I type some characters on the text box it doesn't trigger the autocomplete. I have a web service that contains the function code. I est my code on a single Web Page (No Master Page) and it works perfectly. Also, it works fine if I include the text box and the extender on the Content Page instead of on the Master Page. It is important to keep the text box in the Master Page for me. I am using Visual Studio 2008 and ASP 3.5. MASTER PAGE.




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Onchange /OntextChanged Of A Textbox Not Firing?

Dec 8, 2008

I have a set of textboxes txtPrice1 and TxtQuantity1, txtPrice2,TxtQuantity2...and so on.When the user enters the Price and Quantity, the value1,value2 of that set gets, automatically calculated using javascript. I have One TOTALVALUE textbox, where i calculate the total of these values(value1+value2+..).

The javascript that calculates values(price*quantity), are fired through Onchange event of the textboxes or price and quantity. But i use the same way , Onchange,onTextChanged event, to Calculate the TOTALVALUE , it is not getting fired.


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JQuery :: How To Prevent Textbox Onchange Event Fire

Dec 10, 2010

I have TextBox which

id="test" AutoPostBack="true" OnTextChanged="server event"...

On Client Side I write logic if fail prevent Server Event fire.

I try


I can see the alert fire, but can not prevent the server side event fire.

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JQuery :: Multiline Textbox Onchange Not Firing With Function?

May 28, 2010

I have a sample I got from the web (link is in the code). It colors the background on a control's contents if they've changed (visible change indication for the user). However, when I change a textbox to Multiline it fails. How can I fix this?


Web Page:




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AJAX :: Gridview Within Updatepanel Not Triggering Gridview Outside Of Updatepanel

Jan 14, 2011

I have a page that has a updatepanel around a gridview control that is within my modalpopup. So you land on the page, there is a link that when clicked will open the model popup. Initially the gridview merely displayed saved records you personally choseto save, well when you selected one, the popup would close and the data from that row would be passed to the gridview within the page to display details.. no issue when it was setup that way.. well eventually it was decided to add a delete option within themodal popup gridview so now when viewing the records you can delete it if not needed. works well.. but now with the updatepanel surrounding the gridview when i click on my "select" link it doesnt execute my

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AJAX :: AsyncPostback Trigger And Postbak Trigger For One Control?

Oct 31, 2010

I have UpdatePanel with GridView and i want register posback triger for index changing and asyncpostback for pagging and sorting.

When registering AsyncPostback (with event) and Postback in one control i have ASP event.

How go around this problem? , dynami register triggers mayby is a solution but i can`t unregister triger.

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AJAX :: AsyncPostBack Trigger Not Refreshing The Gridview?

Jan 8, 2010

I have a problem when the databound gridview is not getting refreshed by the trigger that set to the dropdown outside the update panel. Both controls on ascx control that resides on the tabpanel within aspx page. I realise that both need to be in the same contianer, but because it's an ascx, I can't use Content (but it's used on the aspx main page. How to trigger the refresh of the grid?Here's the simplified code:

//Main Page - aspx


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AJAX :: UpdatePanel - Get Focus On Textbox

Mar 14, 2007

I have run across an issue recently while incorporating AJAX into one of my applications. The issue demonstrates either my fundamental lack of understanding about how this technology works, or a problem in my implementation of it. I have created an bare-bones simple example to demonstrate what I'm seeing. I know how to remedy the problem, but I'd prefer the discussion center around *WHY* it's happening.

Here are the details. Consider a project with a default.aspx. That page has two controls, Button1 and PlaceHolder1. The project also contains as usercontrol, uc1.ascx, which simply contains a TextBox control, TextBox1. The click event of Button1 dynamically loads uc1 into the placeholder via the Page.LoadControl method. All I really want to do is set focus to to TextBox1 after the control is loaded. Without the UpdatePanel, I can do it two ways. I can either put TextBox1.Focus(); in UC1's page load event, or I can register a startup javascript to find the textbox and use its focus() method. Either way works fine. See example code below.

Now introduce UpdatePanel. Enclose Button1 and PlaceHolder1 in the same UpdatePanel. The result, no focus to the textbox. Move Button1 outside of the UpdatePanel, focus will work. Fundamental question is - WHY? Why does it matter where that button control is in relation to the Placeholder and UpdatePanel. I've done a lot of searching on this topic and I've found lots of questions but not many answers. Here's the code I'm using, to get focus to work correctly, move Button1 outside of the UpdatePanel:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel ID="up1" runat="server">
<asp:Button ID="Button1" runat="server" Text="Load UC1" OnClick="Button1_Click" />
<br />
<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
Button1_Click Event:
protected void Button1_Click (object sender, EventArgs e)
Control ctrl = new Control();
ctrl = Page.LoadControl("uc1.ascx");
ctrl.ID = "DynamicCtrl";
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="uc1.ascx.cs" Inherits="uc1" %>
UserControl 1 <br />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
using System;
using System.Web.UI;
public partial class uc1 : System.Web.UI.UserControl
protected void Page_Load(object sender, EventArgs e)
//use either of these two lines in the example
ScriptManager.RegisterStartupScript(this, typeof(UserControl), "focus", "document.getElementById('DynamicCtrl_TextBox1').focus();", true);

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AJAX :: Update Textbox Outside The UpdatePanel

Apr 18, 2010

I have UpdatePanel with a grdiview inside. I want to take values from the gridview and put them in TextBox out side the UpdatePanel

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AJAX :: Clearing A Textbox Outside Updatepanel?

Nov 26, 2010

I have a textbox outside a Updatepanel and a Button inside Updatepanel.When i click the Button ,some checking is performed and an alert box is shown.I am usingScriptManager.RegisterStartupScript to show the alertbox.But when i Click on Ok Button of the alertbox ,i want to clear the value of a textbox say ,T2 and to set focus on T2 which is outside the updatepanel

I cannot place the textbox inside the updatepanel

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