AJAX :: Forcing A Postback From An Asp.net Extender
Mar 12, 2010
I have been trying to figure out out to force a postback from an asp ajax extender. The closest post that I can find is
http://forums.asp.net/t/984558.aspx
However I am pretty sure this was at least one migration ago. Additionally I am using VB as my programming language so some of the conversion may be the problem.
I think I am pretty clear on what needs to be done.
If I am correct the steps are...
Create a new property in the extender to hold the postback command for each target control that is using the extender.
Then in the Onload populate that property (Use GetPostBackEventReference to get the ASP valid target ID ) so it can be called from the Clientbehavior.js
My problem is the syntax in the for-each loop that allows me to iterate through the target controls.
Protected Overloads Overrides Sub OnLoad(ByVal e As System.EventArgs)
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Apr 19, 2010
I have basically the following structure set up :
[Code]....
I am aware that a FileUpload requires a full page postback. I read the article http://www.4guysfromrolla.com/articles/090209-1.aspx[^]I tried to install a PostBackTrigger programmatically to get a full postback only on the ImageButton1 control. All other postbacks must be partial. (GridView sorting, paging, ...)In code behind I do :
[Code]....
The above code does not seem to install a full postback only for the ImageButton1, so the file upload fails. How can I make this work ?
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Mar 8, 2010
Hoping I have placed my question in the correct forum.
I am writing an application that simply updates a text box (contained in a AJAX UpdatePanel) via a thread. the eventual idea being that the textbox will be placed in the master page, and a thread will poll a table to check for status messages. 90% of the code works as it should, the only side that is not working, is physically updating the textbox. The value of the textbox is being updated, but it is not being reflected on the screen. When the text is updated in the textbox, the OnChange event is not firing (as it shouldn't), but I still need the textbox to be updated. The textbox is being updated prgramatically, and not by the user.
When the thread triggers, it just fires an event, which right now just updates the textbox with the current date time. I've tried a million and one different ways, but still no luck :( Anyone know where I am going wrong?
Here is my code:
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Always" runat="server">
<ContentTemplate>
<asp:Table ID="Table1" runat="server">
<asp:TableRow>
<asp:TableCell>
<asp:Label ID="lblThread1" runat="server" Text="Thread1"></asp:Label>
</asp:TableCell>
<asp:TableCell>
<asp:TextBox ID="txtThread1" AutoPostBack="true" runat="server"></asp:TextBox>
</asp:TableCell>
<asp:TableCell>
<asp:Button ID="btnstartThread1" runat="server" Text="Start Thread 1" onclick="btnstartThread1_Click" />
</asp:TableCell>
<asp:TableCell>
<asp:Button ID="btnStopThread1" runat="server" Text="Stop Thread 1" onclick="btnStopThread1_Click" />
</asp:TableCell>
</asp:TableRow>
</asp:Table>
</ContentTemplate>
</asp:UpdatePanel>
public partial class _Default : System.Web.UI.Page
{
private static clsThread1 _objObject1 = new clsThread1();
private static Thread _objThread1;
//****************************************
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
_objObject1.UpdateThread1Time += new EventHandler(UpdateThread1TimeEvent);
}
}
//****************************************
private void UpdateThread1TimeEvent(object sender, EventArgs e)
{
this.txtThread1.Text = System.DateTime.Now.ToString();
}
//****************************************
protected void btnstartThread1_Click(object sender, EventArgs e)
{
_objThread1 = new Thread(new ThreadStart(_objObject1.StartProcess));
_objThread1.Start();
while (!_objThread1.IsAlive) ;
}
//****************************************
protected void btnStopThread1_Click(object sender, EventArgs e)
{
if (_objThread1 != null)
{
_objThread1.Abort();
_objThread1.Join();
}
}
//****************************************
}
public class clsThread1
{
public event EventHandler UpdateThread1Time;
public void StartProcess()
{
while (true)
{
UpdateThread1Time(this, EventArgs.Empty);
}
}
}
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May 12, 2010
Please take a look at the following click event...
Protected Sub btnDownloadEmpl_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDownloadEmpl.Click
Dim emplTable As DataTable = SiteAccess.DownloadEmployee_H()
Dim d As String = Format(Date.Now, "d")
Dim ad() As String = d.Split("/")
Dim fd As String = ad(0) & ad(1)
Dim fn As String = "E_" & fd & ".csv"
Response.ContentType = "text/csv"
Response.AddHeader("Content-Disposition", "attachment; filename=" & fn)
CreateCSVFile(emplTable, Response.Output)
Response.Flush()
Response.End()
lblEmpl.Visible = True
End Sub
This code simply exports data from a datatable to a csv file. The problem here is lblEmpl.Visible=true never gets hit because this code doesnt cause a postback to the server. Even if I put the line of code lblEmpl.Visible=true at the top of the click event the line executes fine, but the page is never updated. How can I fix this?
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Jan 6, 2010
I'm trying to solve a problem and am open to any suggestions. Here's the situation:
I have a checkout page that has an iFrame that contains a credit card form. The credit card form resides on an external site that is PCI compliant (and it is a requirement that we are PCI compliant so having the credit card form on our domain is not an option). When the user submits the checkout form, I need a way to force the submission of the iFrame form on the server side. This is because I need to wait for the credit card form's site to send back a reply via a web service on my end, which will be passing a token that I save and use later on when the order is submitted. I also will display any validation errors that are reported from the credit card form site, also via the web service.
This all worked just fine in a simulation, but I'm getting permission errors trying to access the form in the iFrame across domains (and after researching this, apparently it's not possible to access an iFrame's document across domains). I need a way to force the submit of the iFrame form on the server side without having access to the form itself. Can this be done? Can anyone suggest an alternative to what I'm trying to accomplish?
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Sep 9, 2010
We have implemented ajaxtoolkit version: 3.5.40412.0, and my web application is not AJAX enabled. We have included ajaxtoolkit binary reference in our web application. In one of the page, calendar extendar is working fine when it rendar first, after postback it's not working at all in IE7, but it's working fine in Mozilla. The sample code is as below, [ We are not getting any javascript or HTML tag error ]
[code]....
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Sep 13, 2010
I bind a hover extender to a cell in a gridview, using following code:
Sub GridView1_RowDataBound(ByVal sender
As
Object,
ByVal e
As System.Web.UI.WebControls.GridViewRowEventArgs)
Handles GridView1.RowDataBound
If e.Row.RowType = DataControlRowType.DataRow
Then
Dim hoverMenu
As HoverMenuExtender =
CType(e.Row.FindControl("hoverMenu"), HoverMenuExtender)
e.Row.Cells(1).Controls.Item(0).ID = e.Row.RowIndex.ToString()
hoverMenu.TargetControlID = e.Row.Cells(1).Controls.Item(0).ID
End
If
End
Sub
Now This works perfectly and the panel appear when hovering over the second cell. However after a postback it is no longer working and no panel will show when hovering over the cell.
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Feb 28, 2011
I'm using Ajax Popup Extender and I have Some Buttons Inside It ...One of Them for Close ....The Firing Control for that popup is LinkButton ....so When I click on that link button The popup appear but once the page post back The Pop up Disappear... and that what i don't want ..... I will Explain what i want in Details ... I want POP UP Control to Appear and Other Control In The Page Can Be Using not blocked like Modal POP UP and In that pop Up i will have some Buttons all of them do post back and only one of them close the pop up .... so i want the pop up keep appear what ever which psot back happend and close only when I click on Close button for it......... So How Can I Handle That
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Jan 10, 2011
i'm getting the problem about Collapsible Panel.It collapsed by itself during postback(it have a timer and trigger to automatic refresh my page).I 've been read many articles.Someone said it should fix by set Suspressposback property or using cookie to keep to state of Collapsible Panel.I 've already try both of it but it didn't work for me cause i could not get Collapsible Panel object and set set_Collapsed property as i've done the below code before :
UCcpe3 = $find("cpePortfolio");
if (!UCcpe) return;
if (GetCookie("Collapsed")) UCcpe.set_Collapsed(true); //Collapse the CPE
cause i have put it inside the panel in the inner listview like the example code below.
example(type by hand):
<asp:Listview id=main>
<asp:panel id=panelcontent>
<asp:Listview id=sub>
I've been spend a week for this.
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Apr 8, 2010
I have a slideshow extender, I will change the slideshow extender's contextkey value by a button click event. So that after button click the slideshow will display different set of image. Originally with postback everything work fine, but I don't want the whole page to refresh.
So I put the slideshow extender inside an updatepanel with triggers target the button click event. Now the whole page didn't refresh and the slideshow extender's contextkey value did change (same code as before) after button click event. However the image set on the slideshow didn't change.
I think I am missing some sort of slideshow extender reload or refresh call but I am not sure how to do this? I didn't see any related property with slideshow extender...
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Jun 29, 2010
Here is my code. The only problem i am facing is that header panel does not expand after a button in content panel postbacks.
The header panel returns to its original state i.e. collapsed but doe not expand on clicking it.
[Code]....
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Apr 15, 2010
I am using ModalPopupExtender of Ajax Control Toolkit(v2.0.50727) as shown in the following way.
The problem iam facing is whenver i try to show the Popup ,Postback of entire page is happening which is cauisng lot of performance issues.
how to avoid the post backs when using ModalPopupExtender ..
<asp:UpdatePanel
ID="upmodal"
UpdateMode="Conditional"
runat="server">
<ContentTemplate>
<asp:Panel
ID="pnlCmnSrc"
runat="server"
CssClass="modalPopup"
Style="display:
none">
<table>........
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Jul 28, 2010
I have a masked edit extender extending a text box. I enter the date 01/01/0001 then change a selection on a drop down list inside the same update panel with the autopostback property set to true. The date is changed to 01/01/1910.
[Code]....
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Mar 12, 2011
I have a textbox that the user is supposed to enter "City, State". I also have a geoIP lookup that enters that information in for them. If that fails, they would enter it in, and autocomplete will suggest the city and state.The problem:
[code]...
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Jul 29, 2010
When I click the button to open the modal popup it shows the popup but then continues and forces a postback causing the page to reload and the modal popup to be hidden again.Here is the markup for the control:
<asp:Button id="LoginOpenButton" runat="server" Text="Login"/>
<asp:Panel ID="ContentPanel" runat="server" CssClass="modalPopup">
<fieldset> [code]....
My script manager has no properties other than the id and runat set.
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Oct 14, 2010
I have a MaskedEditExtender set for a TextBox that will receive a fee amount. I want the user to be able to type the "." decimal when the amount contains a decimal value (123.45). But if the amount has not decimals (123) I want the mask to automatically fill the 2 decimal with zeroes and also enter the "." decimal point (123.00).With the following mask I'm able to enter a full number (999) and get the zeroes but when user enters 85.85 it will be 850.85 so I change the direction RightToLeft but I'm not even able to type the first character.
<cc1:MaskedEditExtender ID="txtFee1ME" runat="server" PromptCharacter=" " Mask="999.99"
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Nov 25, 2013
I tried to find any methods to validate items inside Modal Popup Extender
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Oct 29, 2010
When i try to submit the page which has modal popup extender,popup extender becomes visible! How can i avoid this?
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May 7, 2015
i have used your code to export <div> to pdf & it works fine but when i am using a ajax controls in a <div> tag then it gives me error message i.e :-
Extender control 'CalendarExtender2' is not a registered extender control. Extender controls must be registered using RegisterExtenderControl() before calling RegisterScriptDescriptors().Parameter name: extenderControl
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Oct 15, 2010
When an asynchronous postback happened inside update panel, another postback happens also for MasterPagenot only update panel embedded page .I want to prevent this MasterPage postback . is this possible ?think like i have a MasterPage and another page which is test.aspx which is content page of MasterPagei have update panel at test.aspxwhen asynchronous postback happens at this test.aspx update panel it also loads
MasterPage Page_Loadi want to prevent this (it should not also load MasterPage Page_Load)
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Aug 10, 2010
I am tring to use Jquery autocomplete into my asp.net 2.0 application, I have all necessary file in place, I tried to worked on , but it seems like this is not working,can some one tell me that is asp.net 2.0 application without using AJAX toolkit works with Jquery autocomplete or it does not work?Note: this is plain asp.net 2.0 web application, it is not using AJAX.
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Jun 15, 2010
I have a TextBox and I want that the user type just numbers, not other format.
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Feb 23, 2010
I am having a problem editing VB.NET .aspx pages in Visual Studio 2008. If I edit a line that is flush against the left margin, Studio automatically indents it 4 spaces, and there is no way to undo it! I am forced to save the file with that 1 line I edited indented differently than all the other lines!
Edit: How do I turn this off?
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Mar 2, 2011
I'm Using Ajax POP UP Extender Control ... and The Panel Which will appear in The POP UP Has Data List ... Inside That DataList i have Image Button For Each Item In Data List.... When I click in any Image Button in That DataList ......I Get That Error At run time Microsoft JScript runtime error: 'this._postBackSettings.async' is null or not an object
... My ASPX Code is
[Code]....
And I put that code inside update panel and ToolkitScriptManager
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Jan 31, 2011
I am using ajax calendar extender to select the dates.I want to disable all the dates less than today. Means the user can't select those previous days ie the dates should be shown in grey color and users can't select it.
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