.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Register
 
Win Surprise Gifts!!!
Congratulations!!!


Top 5 Contributors of the Month
Pankaj Mishra
Shivakumaran
alex morco
Imran Ghani
Meenakshi
Post New Web Links

All TextBox controls in ASP.NET UpdatePanel won't accept any input after post-back

Posted By:      Posted Date: November 02, 2010    Points: 0   Category :ASP.Net
 

 My code behind is VB.NET. I use ASP.NET UpdatePanel like the following. However, after the post-back, all textbox in UpdatePanel won't accept any input, except when I move the mouse over and click on the TextBox.


  • Here's why I use UpdatePanel:

    During the post-back, after inserting data into DB, set all TextBox text property to String.Empty

    After the form is submitted, the Panel pStudent should be refresh , not the entire page

    and the TextBox txtId is set in focus again.

It's very strange that this happened to me today. I used UpdatePanel before many time I never had such problem.


Can anyone show me why  all TextBox controls in UpdatePanel won't accept any input after the post-back even though the textbox is focused , only when you move mouse click in them? 


    <asp:UpdatePanel ID="upPOS" runat="server">
        <ContentTemplate>
            <asp:Panel ID="pStudent" runat="server" CssClass="InContentInfoLight" 
        DefaultButton="btnSubmit" GroupingText="Cafeteria - POS">
                <br />
                <div class ="divleftcolumn-six">
                    ID Number :
                    <asp:TextBox ID


View Complete Post


More Related Resource Links

Issue accessing textbox controls nested within a DetailsView within an UpdatePanel

  
I have a couple of textboxes nested with a detailsview, within an updatepanel.  When I try and access them from the code behind, it returns a null value as if they don't exist.  Can't figure out why that would be.ASPX code is: <asp:UpdatePanel ID="upSpecificShout" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true" > <ContentTemplate> <asp:DetailsView ID="dvSingleShout" DataSourceID="sdsSingleShout" runat="server" AutoGenerateRows="false" OnDataBound="SetDVIcons" HeaderStyle-CssClass="noDisplay" > <EmptyDataTemplate> <p class="Watermark"> The panel on the left shows a list of everything you've shouted. (Your replies to other shouts are highlighted in blue/green.) </p> <p class="Watermark"> This right hand panel will show specific shouts with a list of replies etc.. Just do a little click on a shout title to display more detail here. </p> <p class="Watermark">

Dynamically created controls not accessible after post back.

  
Dear Friends, pls give the solution. code given below.. dynamically HtmlInputCheckBox created and add in PlaceHolder(panel). I can't get the created control values after post back..Dynamic Control Creationprivate void GetPhotos() { HtmlImage img; HtmlInputCheckBox ic; panel.Controls.Clear(); DataTable dtPhotos = DLayer.Qry_WithDataTable("ADM_GET_HotelPhotos"); foreach(DataRow drPhotos in dtPhotos.Rows) { if ( File.Exists(Server.MapPath("../Photos/Hotel/" + drPhotos["FileName"].ToString()))) { ic = new HtmlInputCheckBox(); ic.Value = drPhotos[0].ToString(); if (drPhotos["PStatus"].ToString() == "1") ic.Checked = true; else ic.Checked = false; panel.Controls.Add(ic); img = new HtmlImage(); img.Src = "~/Photos/Hotel/" + drPhotos["FileName"].ToString(); img.Alt = drPhotos[1].ToString(); img.Attributes.Add("title", drPhotos["PhotoCaption"].ToString()); panel.Controls.Add(img); } } }Get checkbox values foreach (Control ctbl in panel.Controls)        {            if (ctbl is HtmlI

Trouble with update panel and dynamic controls and post back

  

 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.

Page Load

If not ispostback then

    setuppage()

end if

 

private sub setuppage()

'get a reference to the scriptmanager on the master page

Dim scriptManager = DirectCast

Post back puzzle

  

Hi, I have a website where the user makes a selection from a combo box and it then fills a couple text boxes with text based upon the selection. I'm sure as you know it could take a second for the text to appear in the text box due to the post back. I know there is no way to make it instantanious, so what I would like to do it fill the text box with somthing like "Loading Info..." so the user does not type in it while the information is loading.

If you would like to see what I mean please go to this page: www.epiclinks.com/create.aspx and mess around with the combo boxes and You'll see what I mean.

What I would like to do is have it do a post back to write "Loading Info..." and then do another post back to fill it in based upon their selection. How would I do this?

I'm up for anything, so if you have a better solution than that please let me know.

Thanks.


Help with form input and post

  

I'm trying to teach myself MVC and have been having a few problems trying to handle a form input and post scenario. I am trying to have a section at the top for searching that appears on every page (like there is on sites like amazon).

I've read websites such as: http://weblogs.asp.net/scottgu/archive/2007/12/09/asp-net-mvc-framework-part-4-handling-form-edit-and-post-scenarios.aspx and tried to follow their example form post code in my Site.master file. 

The problem I'm having is that it always calls the default controller action, regardless of what I put as the url in the form action (in fact, I can even remove the form tags altogether and it doesn't seem to make a difference -the text box will still call the default controller when I press enter).

In my site master file, I have tried the using the following html markup:

<form action="Home/SearchResults" method="post">
                    <input id="Search" type="text" name="searchText" />
                    <input type="submit" value="Search" />

</form>

which is the for

checkboxlist full post back problem is association with PopupControlExtender

  

I have used a checkboxlist in association with PopupControlExtender. All the items are inside the update panel. I used the server side SelectedIndex changed event of checkbox list for another purpose.  But it cause full post back while checking the check box item. The update panel doent make any sense here.


<div>
        <asp:ScriptManager ID="Scriptmanager1" runat="server">
        </asp:ScriptManager>
        <asp:UpdatePanel ID="UpdatePanel3" runat="server">
            <ContentTemplate>

Working with datepicker and input controls

  

Helloe all,

Please I'm developing a hotel reservation system and I have both "check in" and "check out" html "input"controls and I have linked these controls to the Jquery datepicker. Unfortunately, I'm not able to access the value of the controls in asp code behind (using their ids CheckInDate and CheckOutDate respectively).

Previously, I used asp textboxes and I was able to access the IDs in code behind but whenever the page displays and I click in any of the textboxes their respective datepicker don't show.

However, I'm able to access the html input controls in code behind when I add runat="server" but when I do that the datepicker don't show for both control when I click in the input boxes.

Someone help me so that I will be able to make the datepicker show as well as fetching/accessing the value of the input boxes (selected dates) in the code behind...... or how to use asp controls and add onclick functions to call the datepicker.

Thank you.

 

<script type="text/javascript">
        $(function() {       
        $("#CheckInDate").datepicker({ minDate: 0, maxDate: '+1M' });
  &n

Enabling/disabling input controls in a form

  
I am writing a ASP.NET UserControl and I am trying to incorporate JQuery into this.
The control is a simple form with a few input fields (text, checkbox, select, radio).
The first element in the form is a checkbox. Upon clicking this checkbox I want the all the input elements in the form (except the checkbox control itself) to be enable/disable. I tried writing some of this code but my solution was not getting me anywhere.
Below is the ASP.NET form code. I'd appreciate the help with some code or pointers into what I am doing wrong.
 
 <asp:Panel ID="pnlInputControls" runat="server">
    <table style="width:100%;">
        <tr>
            <td style="width:50%">
                <asp:CheckBox ID="chkBenefitName" runat="server" Checked="true" TextAlign="Right" ClientIDMode="AutoID" style="padding:0 0 0

Validation Controls Inside UpdatePanel

  
Hi All,If you use validation control, the base validator will render script WebForm_OnSubmit() to the page and add form onsubmit "onsubmit="javascript:return WebForm_OnSubmit();". This script is used to fire client side validation event.Now I have a listview inside updatepanel, when click edit button to fire the listview edit mode, the above validation script is just not rendered. How shall I work around with that? I need to customize the client validation event here.Thanks.

Enter the date on the WPF DatePicker input textbox instead

  
When i type in the date on the date picker and check it on an lostfocus event and i try to read the text or selecteddate its blank?  Am i missing something.  I assumed typing in 5/11/2010 on the input box would either show up on the controls Text or the SelectedDate, but i may be missing something   Thanks

ScriptManager.RegisterStartupScript is not working after post back

  
Hi,          I am registering javascript after page  post back using ScriptManager.RegisterStartupScript . it used to work previously. Ater there are some chagnes done in the project now it is not working. What might be the reason behind this. now i am unable to register the javascript after post back.Thanks and Regards,kiran

Cascading drop box holds old value if empty on auto post back

  
I have 3 drop boxes: 1.) Choose Operation 2.) Choose Site 3.) Choose Area. All three of them are linked to an SQL server database which has 3 tables following the same heiarchy of order. I.e. Areas belong to a Site and Sites belong to an operation. And there can only be one operation per site, or one site per area. First you select an operation, then the page auto postbacks to filter the sites. Then you pick a site and again it autopostbacks to filter the areas. The issue I am having is that when an associated operation has no sites underneight it, and therefore no areas under that, the previous values that were in the boxes are displayed and the user can't click on the boxes anymore. I think this is kind of cheap looking and would like a way to make it so the boxes are clear (i.e. nothin in them). Is there anyway to check if they are going to freeze like that and assign them blank values??Any suggestions on this issue would be greatly appreciated!-Jordan

Masterpage + UpdatePanel + Formview + EditItemTemplate = Null controls

  
I have a content page with a DropDownList in an UpdatePanel, a GridView in another UpdatePanel and a FormView in a 3rd UpdatePanel.  The databind's for the 3 controls happen in the code behind.  The FormView is populated when a row is clicked in the grid.  The Mode of the FormView is contolled by a series of buttons in that UpdatePanel, displayed as appropriate depending on the data in the grid row.  When the FormView is in Insert and the bound textboxes of that template are edited and (partial) posted back, I can retrieve the controls and their values with casts such as: if (Emp_Form.CurrentMode == FormViewMode.Insert) { CheckBox active = (CheckBox)Emp_Form.FindControl("cbActive"); ... But when the FormView is in Edit there aren't and controls during the (partial) post back.  A reference to them such as: if (Emp_Form.CurrentMode == FormViewMode.Edit) { TextBox usrNmTB = (TextBox)Emp_Form.FindControl("UserNmTbx"); sUsr = usrNmTB.Text.ToString(); ... results in a Null object reference exception.  When a button's onclick runat server event fires how should I capture the FormView's controls collection?  Why does it work for the Insert mode and not the Edit mode? Thanks in adva

Textbox in headertemplate gridview lost text in updatepanel

  
Hi everybody,I never post on this forum because since 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.Is there any solution ?This is my code : <asp:UpdatePanel ID="UpdatePanelOrders" runat="server" UpdateMode="Conditional"> <Triggers> <asp:AsyncPostBackTrigger ControlID="btFilterClear" /> </Triggers> <ContentTemplate> <asp:GridView ID="OrdersView" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" ShowHeaderWhenEmpty="True" EnablePersistedSelection="True" PagerStyle-CssClass="pager" AlternatingRowStyle-CssClass="alter_row" SelectedRowStyle-CssClass="select_row" DataKeyNames="CustId,SalesOrders,CompCode,CustPO"> <Columns>

Problem with Dynamic Controls inside an UpdatePanel

  
Hello Everybody ,I have this problem,if anyone could help me i'll be so gratefull. I had been created some dynamic radio buttons in a loop inside a dinamy table which is inside an UpdatePanel , but i can not handle the events my code is below:public void MetodoCreacion(){RadioButton RBtn = null;Table table = new Table();TableRow row = null;TableCell cell = null;for (int i = 0; i < 5; i++){row = new TableRow();cell = new TableCell();RBtn = new RadioButton();RBtn.ID = "RBGN_" + i.ToString();RBtn.GroupName = "RBGN1";RBtn.Text = "Opcion " + i.ToString();RBtn.CheckedChanged += new EventHandler(RBtn_CheckedChanged);RBtn.AutoPostBack = true;cell.Controls.Add(RBtn);row.Controls.Add(cell);table.Controls.Add(row);}UpdatePanel1_UpdatePanelAnimationExtender.Controls .Add(table);}public void RBtn_CheckedChanged (object sender, EventArgs e){Label1.Text = ((RadioButton)sender).ID;}and the controls doesent call the event ...thanks a lot

Dynamic Image Buttons in GridView not doing partial post back

  
Hi Gurus - Create a gridview with AllowPaging and AllowSorting = true- On page load, I bind it to datasource (in my case a webservice) - On gridview's rowcreated event, I dynamically add image buttons on the header of the grid for sorting (up/down arrows). On header I have column name and the image. I removed the Column name default sorting link. So user can now only click the image button for sorting.-  Call sorting method This works perfectly fine without AJAX. The paging, sorting works fine. Also when I apply AJAX the paging works fine. But the sorting is doing a full post back instead of partial postback. I have my gridview within UpdatePanel and Triggeres is set on gridview sill it doesn't work.ASPX Code<form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" /> <div> <asp:Label ID="lblAccount" runat="server" Text="Account #: "></asp:Label> <asp:TextBox ID="txtAccountNumber" runat="server">12203A30</asp:TextBox> <asp:Button ID="cmdGo" runat="server" Text="Go" OnClick="cmdGo_Click" /><br /> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> &l

controls disappear in UpdatePanel

  
Hello,         I have an update panel and inside the update panel I have a button. When I click that button I want to show textbox which is hidden (i.e. style="display:none"). I want to do it from client side. I wrote a javascript to show the textbox. But the textbox disappears after it is shown.   my button  code looks like this: <asp:ImageButton id="b1" OnClientClick="showTextBox();">.   showTextBox() code is called and it displays the textbox, but the click event goes to the server and comes back and when it comes back it doesnt know about the newly added textbox i guess. Is there an easy way to show the textbox from the client side without going to the server inside UpdatePanel.   Any help would be appreciated.   Thanks, Bharani
Categories: 
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend