AJAX :: Images Not Displaying After Post Back With Update Panel

Feb 25, 2010

In the page load evertything is working fine. Iam using Updatepanel in my page .Images are not displaying with post back i am using telerick grid and jquery in my page. how to get images on postback

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AJAX :: How To Do Update Panel And Dynamic Controls And Post Back

Sep 29, 2010

I have a page that is mostly dynamically built in the page load of my VB.net code behind page.

The issue is that I made a change to the page and added a button that redirects to a secondary page. When the button is clicked there is a very noticeable lag until the button click event fires because the page is being rebuilt every time.

I had not wrapped the code in the load event in the If not ispostback.... because I have dynamic controls that the user interacts with and I need the page to be rebuilt when the user clicks them.

The dynamic controls are clickable table cells. I did some looking and I found that the RegisterPostBackControl. I thought this would be perfect but, it does not although I maybe using it incorrectly.

Here is the code flow.

[code]....

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AJAX :: Update Panel Post Back To Show Processing

May 11, 2010

I have a page that the users get redirected to. On page load this page runs a bunch of code behind that and loads table. The processing could take a few seconds to minutes depending on how big a report is run. Is there any way to completely render the page before automaticly kicking off the code? I am trying to stay away from forcing the user to click on another button.

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AJAX :: Which Update Panel Cause Partial Post Back In Javascript?

Jul 22, 2010

I have multiple update panels in a page. how I can know which update panel caused partial page updation on client side before page is partially updated?

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AJAX :: Display Loader Image On DropDownList Auto Post Back In Update Panel

May 4, 2014

How to display wait image when data is being populate into one drop down based on selection of another dropdown inside update panel....

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AJAX :: Displaying Alert Box While Using With Update Panel?

Feb 10, 2010

I have used Response.Write("<script language='javascript'>alert('Enter correct Email and Password');</script>");} code in code behind for displaying an alert box.But this code is not work when i have added an update panel.I have also tried usin registerclientscript.but same .How can i display an alert box when using an update panel?

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Back Button In Ajax Update Panel Not Working

Mar 26, 2010

Im using updatepanel in my screen.. i have 2 pages when i click submit button in page1 then it ill be redirect to page2 ....in page2 i have one back button..i wrote click event onclick="history.go(-1)"when i click back it just redirect to page 1 but records already showned in page1 not displayed .how can i sove this problem? cai i use any scriptmanager?

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AJAX :: Upload Multiple Images Using Update Panel

Jun 16, 2015

Can we upload multiple images with the update panel?? images are upload without any postback like ajax...

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AJAX :: Back Button And The AJAX Update And Panel?

Dec 9, 2010

I know everyone has heard this a million times, but I need help with the back button and the AJAX update panel.I essentially have a form, that has 5 fields:Vehicle Make (In update panel #1) Model (In update panel #1) Trim (In update panel #1) Ownership Status Zip Vehicle model gets populated depending on what you put in make, same with trim. Now once the user hits next, I do a response.redirect. When I hit the back button, the possible values, and the current index is wiped for Vehicle Make, Model, Trim. I cannot
figure out a way around this.I have read about that history management feature, but seems uselesss since I need to somehow update the make, model, and trim possible values. Isn't there any way for me to get these values in the viewstate before I post the page?

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AJAX :: Chinese Character Is Not Displaying Properly Inside Update Panel?

Jun 5, 2010

I want to display Chinese character in text box in Ajax Update Panel. But now i am getting error message as below.

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; OfficeLiveConnector.1.3; OfficeLivePatch.0.0)

Timestamp: Sat, 5 Jun 2010 13:12:18 UTC

Message: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.

Details: Error parsing near '

|120|hiddenField|__VIEWSTA'.

Line: 4723

Char: 21

Code: 0

URI: http://localhost:49299/AjaxUpdatePanel_POC/ScriptResource.axd?d=3XOuuZZ2MfcURXoee7rr5ThP5lLnlnNeJICyXC4kvAlvTFaRC1PPvMdo2uBohcDHAQC0xjGp7pHhayPIPENy6QC-buEHEbZ83K4xcoXU6Ls1&t=ffffffffec2d9970

But I tried with without ajax update panel. it's working perfectly.

Default.aspx code:-

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>

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AJAX :: Using Browser Back To Previous Page Containing Gridview Inside Update Panel?

Aug 6, 2010

Looking for the best technique on handling or at least some documentation showing an example.

Starting Page

Gridview control withing an update panel (also various controls used for filtering NOT IN UPDATE PANEL)

Databinding does not happen during page load.

Databinding is initiated when update panel trigger (asp:Button object) is clicked

Hyperlink column is added to returned records

Hyperlink posts to a separate page for detail for record which the hyperlink was clicked.

Second Page

While navigating via the browser back button to previous page (which contained the update panel and gridview) only the (various controls used for filtering) have retained state. The gridview is not shown (which is how the page loads initially when starting) How can I retain the state of the Gridview and add a step in the browser history all together?

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AJAX :: Difference In Asynchronise Post Back Trigger And Post Back Trigger?

Jul 15, 2010

I searched google and found asynchronise post back trigger is used if we want update panel to post back on some event of control if it is out side the update panel. Than what is purpose of post back trigger ?

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C# - How To Stop AJAX Update Taking Place In One Update Panel From Another Update Panel

Sep 5, 2010

We have two update panels on our webpage. Now first update panel is having button cancel. While second update panel is having a file upload control.

Now if the user uploads a file that is going to upload in about 2 mins, and in between, say after 30 seconds the user clicks the cancel button, the upload taking place in update panel 2 should stop.

How do we achieve this ?

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Update Javascript After Async Post Back In C#?

Feb 4, 2011

I have the following code on my website:

<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel runat="server" id="UpdatePanel" updatemode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger controlid="myButton_btn" eventname="Click" />
</Triggers>
<ContentTemplate>........

The javascript is running everytime I click the button. However, even though my subroutine updates the session variable after clicking the button, I always get the same alert. In other words, the same javascript is run after postback, and it is not updated. I am positive that the session variable IS being changed.

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Web Forms :: Loading On Post Back Like Facebook On Every Post Back Request

Nov 30, 2010

I have four textbox and a button in my page. After filling the textbox. When the user click save button. A loading image should be displayed. User should not feel that the page is postback to the server,Some thing like in facebook loading image.

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C# - Using A Timer Post Back, Which Controller To Use That Doesn't Post Back To Server?

Jul 14, 2010

Being new to ASP.NET I have run into trouble building my own Whack-a-mole program. I think my problem comes from using Buttons, which by themselves send post backs to the server, making the software unusable. The looks are in place, making new buttons show up in the grid, in different places by random. However, when a button is pushed - the score doesn't change (which I feel is strange).

Not so strange is that the Button doesn't work since it sends post back to the server - reloading the UpdatePanel. I think I should use a different controller like the CheckBox and style it hard using CSS (which isn't a problem). Is this the correct way to go, or should I make use of JavaScript AJAX instead?

Note to self: This technique shouldn't be used in a public application since it put too much unwanted pressure on the web server.

[code]...

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AJAX :: Updating An Update Panel From Another Update Panel Works Only On Second Time?

Jun 5, 2010

I have a panel withitn an updatepanel with some buttons.

When one of the buttons is pressed, I'm updating a different update panel.

The problem is that when I click the button, nothing seems to happen.

If I click the button again , then I see the first update. If I click it again, I see the second update and so on..

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Web Forms :: Displaying Message Outside Update Panel?

Feb 24, 2012

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div style="position: absolute; left: 4px; top: 26px; padding: 8px; height: 14px;">
<asp:Button ID="cmdsave" runat="server" Text="Save" Width="50px" Font-Bold="True"
Font-Size="Small" Height="23px" OnClick="cmdsave_Click" CausesValidation="false" /></div>
<asp:Label ID="lblsave" runat="server" Visible="true"
Style="z-index: 105; position: absolute" Font-Names="Tahoma" Font-Size="Small"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="cmdsave" />
</Triggers>
</asp:UpdatePanel>

i have the above

when i click save wherever msg get displayed in lblsave.text but positioning of the <asp:Label ID="lblsave" for displaying msg is not proper i have another label lblmsg in modal popup i need to display msg in lblmsg but i get blank.

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C# - Highlight Gridview Row In Update Panel Without Posting Back?

Aug 7, 2010

I have a gridview in an update panel with the following code to select a row, this in turn updates another updatepanel with details from the form record.

protected void gvMainGrid_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//Make the entire row clickable to select this record
//Uses javascript to post page back
e.Row.Attributes["onmouseover"] = "this.style.cursor='hand';this.style.textDecoration='underline';";
e.Row.Attributes["onmouseout"] = "this.style.textDecoration='none';";
e.Row.Attributes.Add("onclick", ClientScript.GetPostBackClientHyperlink(this.gvMainGrid, "Select$" + e.Row.RowIndex));
}
}

I am manually binding the gridview from a database and don't want to rebind the grid just to highlight the row, but I can't seem to add any javascript to the onclick event, it seems to either show the GetPostBackClientHyperlink or the row highlight javascript.

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Web Forms :: Call Back Event On Update Panel

Feb 28, 2012

Is there any call back event for update panel??

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Data Controls :: Every Post Back In Form Is Taking Long Time When Several Update Panels Used

Nov 22, 2015

I have a big form in which i have almost 10 update panels. some are having updatemode = conditional and others are always. Now by default when that page is opened i only show one dropdownlist.When that project dropdownlist (from which i populate the rest of the elements in my page) value is changed by user it takes long time to load the other elements. Also the other gridview which is also surrounded by update panel and mode in conditional takes long time to show edititemtemplate controls in edit mode. 

I am unable to trace the reason behing delay. Few days ago it was working fine and fast but now it is slow.

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AJAX :: Update Panel Not Applying Out Of Update Panel Button?

May 16, 2010

I have one update panel inside updatepanel i have one dropdownlist .When i change dropdownlist value so as per value button1 which is out of updatepanel not visible =true or false as per dropdownlist value.

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Web Form And Ajax Data Lost On Post Back - Finding Possible Cause / Ajax Or Changing Visible Property

Sep 15, 2010

I have two Repeater controls, each hosted in a user control. Both user controls are contained in the same aspx page. Only one User Control is visible at any one time. The repeaters are comprised of checkboxes, and text boxes for user input.

The aspx page is configured with an Ajax ScriptManager; and contains several Ajax UpdatePanels. These UpdatePanels result in partial page post backs when text is changed in a textbox control in controls on the aspx page (this is not the behaviour for the Repeaters in the User Controls). Through use of several AsyncPostBackTriggers, various controls contained in the other UpdatePanels on the page have their content refreshed in response to the partial page post backs they are configured be notified about.

Depending on a radio button group selection, I set the visible property to true or false - as appropriate for the User control containing a repeater control. The Repeater control is then populated with data using databinding. All of this works.

However, when the Submit button is clicked, the Repeater control contains no data.

Given that I am not dynamically adding the Controls containing the Repeater controls (but using Visible true / false). I would have thought that the State of the fields and the data in the visible control would be preserved during the post back.

The User Controls are contained within the UpdatePanel that contains the Submit Button.

I have explicitly Enabled View state without any effect.

Am I correct in assuming that I should not have to do any explicit handling of data changes the user makes (via client side script and manipulation of an Data Structure Representing the Repeater Data); and the View State should maintain the data I need to access on the server when submitted?

I do not believe that it is the User Control visible state changes that are causing the issue because when the page is initially loaded on of the User controls is populated with dummy rows (so it displays).

I am suspicious that because the visible state of the controls is changed during partial page post back, that the Page View State ends up with no knowledge of the User Control and therefore cannot track its data (or changes).

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AJAX :: Update Panel In Master Page Is Affecting Another Update Panel In Child Page?

Aug 4, 2010

i have my master page with one update panel working like a banner, so when the timer do tick every 5 sec

the image change. That works fine, but i have an update panel in my index page, this update panel works with some buttons that change the text inside the panel when click.

Now, the problem.

When i click one button to change the text and the banner change, the text returns to his default text. The update in master page is affecting the update on index page.

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AJAX :: Decrease Loading Time Of Update Panel On Panel Bar Item Click

Jan 2, 2010

I have a panel bar..each time I press panel bar item I display ascx control with in update panel..but it lakes update panel loading time lot..how I can decrease that loading time?

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