AJAX :: TextBox Value Not Being Updated From Code-behind?
Apr 21, 2010
I have a webform that accepts a date range to generate PDF reports. I had to place a PostBackTrigger on the updatepanel and assign the button thaat generates the reports because the Response.ContentType is being set to "application/pdf".
The problem is I am updating the textbox value to the count of clients that are left out of the report generation in server side code, the count always come back as 0. I have tried multiple panels with no luck. The textbox is in the main updatepanel with the print button and that still does not work.
I have a web form for payments which consists of a DropDownList (credit card, purchase order, bill me). By default, credit card is selected, and the form (a ListView within a UpdatePanel) is loaded with the user's billing address. If the user changes the payment option, the form fields change -- for example, if purchase order is selected, the billing address + credit card fields disappear and a "Purchase Order Number" textbox appears. This is done using an AsyncPostBackTrigger associated with an event in the DropDownList.My problem is that when the form is submitted, I cannot see the user-entered values within the UpdatePanel/ListView, but I can see the original values loaded in the ListView before the edits were made. For example, if purchase order is selected, I can see the billing address from the ListView, but I cannot see the newly-entered Purchase Order Number from the ListView.Here's an abbreviated version of my code. I've bolded and commented two lines where the problem appears:
I have a asp.net page with a datalist with a textbox and a button on it, on page load the textbox gets text in it, if I change the text and press the button the text doesn't get updated.
I have a page that shows the value of a property of my model. The value of that property is changed in the action-method of the controller (that recieves the model as a parameter). It turns out that this line of code:
<%= Html.TextBoxFor(m => m.Problem)%>
does not represent the value that it got in the action-method-code (just the value it got from the POST), but this does:
I have a formview where there are a few textboxes. I want to show a message when only one textbox(txtAppNum) has been updated. I am not sure if I need to use textchanged event or onchanged event or there is some thing else to make this work.Please suggest me the way to do this.
I'm using a hidden field to store a value in an asp.net page. Basically I set the value of the hidden field whenever a value on the form is changed i.e. first name, date etc. The field is on a webform that has a master page and is in the content section:
I change the value of the field in javascript by calling a function whenever an onchange event fires in other controls on the web form:
<asp:TextBox CssClass="niceInput" ID="tbFirstName" runat="server" MaxLength="40" Width="150" onchange='SetHiddenVariable();'></asp:TextBox> <script type="text/javascript"> function SetHiddenVariable() { // Set the value of the hidden variable so we know a field has been updated var hiddenControl = '<%= hdnDirtyFlag.ClientID %>'; document.getElementById(hiddenControl).value = 'true'; } </script>
So far so good. When the page loads the hidden field value is 'false', and if I don't change any values on the webform it remains false. Whenever I do change another control the javascript function gets called and the hidden field value gets updated to 'true'. Again this is all fine.
After I submit the form and update the database, I set the hidden field value back to 'false' in the code behind:
hdnDirtyFlag.Value = "false";
But when I click another button and do a postback, the hidden field value is still at 'true'.
Can anyone explain why this is? I stepped through the code behind and immediately after changing the value I can see the value is 'false'. There is an asp:UpdatePanel on the page but the hidden field is not part of this panel.
EDIT:
This is the code I use to check the value of the field in code behind in the second postback, after it has been set to false in the last step of the first postback. The value remains at true for some reason in the second postback, after it has been set to true in javascript on the client side then set back to false in code behind as shown above:
if (hdnDirtyFlag.Value == "true") { UpdateSecurityObject(); }
i m using ajax validatorCalloutextender with regular expression validator(for numeric values). It is working fine on a textbox but with same code on another textbox it is showing error msg this control is valid inspite of showing required error msg. The code is same for both textboxes.
I have a GridView with an ItemTemplate and an EditTemplate:
[code]....
I am able to go into Edit Mode and once in edit mode I can see the textBox tbLogEntry fine. lblLogEntry is gone. I have left regular Item mode and am in Edit mode:
[code]........
gives me back the original value, not the new one.
How do I get the edited value from the front end textbox?
I am using an anchor tag in my application for which I am assigning href an image url which i am saving in code behind. Images are saving perfectly from code behind but are not updated in anchor tag. I think this may be a browser dependency because I checked the property of fresh page rendering in IE option then all the things are working fine but this is recommendable.
I was trying to update a detail view from code behind (vb.net). I know how to fire the event but dont know where to put the DML query where i should do update and insert, i mean in which event?:
I have a grid view that is dynamically created.In which every cell in the girdview has a 2 textbox (cTxtboxQty,ctxtWorkOrder) and 2 label.
When user click on the cell, a pop up come out and user are able to change the text inside the cell and click save.After that the pop up close and changed data immediately reflected on the screen.
My problem is:
After my data are changed and updated to database on the pop up page and having it post back to the parent page , my dynamically created textbox in gridview retain old value even new value has been assigned to it.
This sound very weird but i have no idea how to solve this.
My client side code is as below :
[Code]....
[Code]....
[Code]....
[Code]....
I have tested many times and find out that it might be the page hold the old value in memory, so that even we have updated the textbox value, after postback, it still keep and show the old value?
I am using ajax colorpickerextender control for color selection. For TargetControlID, I have used a textbox. It shows hexadecimal color code into that textbox. Using this post I have resolved this for colorselection change event. I am saving selected color into an xml file and reassigning it to the color control when form loads. My problem is at loading it shows hexadecimal code.
am fairly new to AJAX, but have successfully got my page working in FF and somewhat working in Opera and Chrome.I have made a table, and populated cells of that table with an AJAX call to a sever side script.I am then using those cells in mathematical equations on the client side.In FireFox this works smoothly, In IE it fails completely. IE doesn't see that there is a value to the cell of the table, even though it displays the information in the cell after the AJAX call. Am I doing something wrong to make IE over look the fact that i have changed the DOM? or am I doing something completely impossible in IE?I need a way to let IE know that there is a value in the cell.
The text box is updated correctly if it is empty or if the date is invalid e.g. 9/292010.
If the current text is 9/29/2010 and a different date is clicked then the calendar stays open with the previous date selected. I get the following error message "e.getDateOnly is not a function".
i have three text fields in a page and i placed those in Update panel and that update panel is updated on cancel and submit button click event, and after insertion that record is displayed in gird it works properly but i am facing one problem that i have a common Pannel for all types of messages like(update,delete,insert,error messages) and i have define this panel in master page so how can i update that panel on update or according to my requirement .........
I am using Ajax on a Sharepoint 2007 website and I have copied in the AjaxControlToolkit.dll into the bin folder.
Method CreateModalUpdateProgress Details Could not load file or assembly 'AjaxControlToolkit, Version=1.0.20229.20903, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) Stack Trace MyWebParts. HelperClasses. WebPartControlFactory. CreateModalUpdateProgress (Control controlToAddTo) MyWebParts. BaseClasses. BaseWebPart. CreateChildControls()
Please contact a system administrator and provide them with these details
I have an ASP.NET AJAX application, which is using .NET Framework 3.5. I have visual Studio 2008 installed on my developer machine. The AjaxControlToolKit dlls I have installed in my system right now come from the file "AspNetAjaxLibraryBeta0911.zip". The released date of the dlls in the file is 12/29/2009. Exploring the AjaxControlToolKit download site, I found that there is a more updated version, which release date was April 12th 2010.
I tried to update the AjaxControlKit.dll version to the newest one. I did this creating a path in my system: c:Program FilesAjaxControlToolKitWebFormsRelease then I placed there the new AjaxControlToolKit.dll and AjaxControlToolKit.pdb files. Then I right clicked on the name of the dll inside my Bin directory in my application and selected "Update Reference". After I did this I tested the application and is giving me Jscript error messages like: "htmlfile: member not found", or Microsoft Jscript Runtime error "lenth is null or not an object". I don't get these error messages if I come back to the previous version of the AjaxControlToolKit.
I've created an AsyncFileUpload device that uploads an image in ListView but it doesn't refresh on the page until the page is manually refreshed. how to accomplish this? This is the applicable code:
