I have a user control I am adding dynamically.
It has a link button and a text area on it. The containing div is hidden via style sheet (client side), and I use some jquery to pop it up in a modal.
It is getting added in the init and the button click event is firing on the server.
BUT the textareas value is not being set. On further inspection the field value is not even being sent in the form POST data.
Any ideas why the value is not being sent. The rest of the form values are being sent with no problems.
Make sure the control is actually being added to a form control. Your link button will still post back even if it's outside the form as it's a javascript call, but there won't be any content from your server controls in postdata.
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Hi Here is the scenario:
I have an asp:Button on the page, and on clicking on the button, it verifies certain logic and displays a details block. This details block has bunch of web user controls, which make their own jquery ajax calls and load different controls using jquery templating plugin.
The details panel is inside a asp:Placeholder and i set visible property to true on postback.
The details panel was working fine earlier since i did not had a button click which does a postback to load the details panel. It was displayed by default earlier. How do i get my web user controls make an ajax call after the postback completes?
I got it working. I just added a hidden field on the page, and on postback i filled it with some value. On jquery instead of calling the functions directly on document ready, i checked what is the value set to the hidden field. This resolved the issue.
Inside an UpdatePanel I have two PlaceHolders which are never visible at the same time. In one PlaceHolder I let the user choose an article to edit and when an article is selected it is displayed in the other PlaceHolder. When this happens is set the visibility of the first one to false and turn the other one on.
Now, when the user edits the article there are some fields and two buttons: one button is labeled "OK" and is used to send the form data to the server and the other button is labeled "Cancel" and is used to. It is only when the user clicks the OK-button that I need to send the form data to the server since this is the only situation where bother to handle it. Therefore, can I let the system know that the it should not send form data when the Cancel-button is clicked?
The issue was brought up because at first, I got a RequestValidation-error from the tinyMCE-component that is used for the body of the article (since it contains HTML), when I clicked the Cancel-button. Now I have turned off RequestValidation for this page and I do the validation manually.
But anyway, can I turn off form-data-sending when the Cancel-button is clicked?
Maybe if you prevent the postback when clicking the Cancel button you'll disable the form-data sending. This could be achieved by subscribing to the OnClientClick event of the button and type return false as a value.
I'm using ASP.NET 4 to create a page with elements that are used in a jQuery UI Sortable plugin.
All of these elements contain a button (implemented as a submit button) with the name SubmitButton. All but one of these buttons are hidden in the page's Load event. But if I drag the element to another position, and then submit the page using that button, ASP.NET gets confused.
ASP.NET thinks I've clicked a different button, one that wasn't even visible on the page, but is associated with content at the position where the clicked button was before the move. (If I don't move the element, it works fine.)
I can't seem to determine how this is happening. As I understand it, ASP.NET knows which submit button caused a postback because the button's name and value is included in the postback data. (__EVENTTARGET plays no role here and is empty.) So how can it think a different button submitted the page?
How could ASP.NET get confused about which button submitted the page?
(Sorry, it's not possible to put this page on a public website.)
I worked through this issue and here's what I found.
First of all, buttons by default are rendered as <input> tags with type = submit. The postback mechanism in this case has nothing to do with ASP.NET. The postback data includes, among other things, the name of the submit button that caused the postback along with the button's text (in the form name=text).
But ASP.NET button names, by default, include the names of all parent controls. When those controls are unnamed, they are given an ID like ctl00, ctl01, ctl02, etc. The result is that all my buttons are guaranteed to have a unique name.
The problem is when these buttons and parent controls are all created dynamically. On the postback, these controls are reconstructed in the load event but in the new order. Because the order affects the name (ctl01 vs ctl02), this means my submit button has a different name than it did when the page was originally rendered.
The result is that ASP.NET sees the wrong name associated with the submit button used to trigger the postback.
I'm designing a website and I want my login page to catch "Enter" with all components, but i can not assign any Key or Mouse Events to TextBox ... After pressing to "Enter" a function should be run with 2 parameters (user name and password).
How can i do this?
If you wrap all the controls inside a standard HTML form then hitting enter in one of the text boxes will submit the form. You can then process the username and password entered on the server as with a normal form submission. Is that the behaviour you're looking for?
You don't need to trap any events on the client in this case so no need for JavaScript.
How to submit ASP.NET forms with the enter key
Read up on the defaultbutton property for forms and panels. This should get you what you want. From the site above:
ASP.NET 2.0 introduces a wonderful work around for this. By simply specifying the "defaultbutton" property to the ID of the , whose event you want to fire, your job is done.
The defaultbutton property can be specified at the Form level in the form tag as well as at panel level in the definition tag. The form level setting is overridden when specified at the panel level, for those controls that are inside the panel.
http://www.beansoftware.com/asp.net-tutorials/accept-enter-key.aspx
finally if found the answer. Here is ! The only problem is, I can not hide my button,
so that i put that button to web page as "Login" ... Defaultbutton could be hidden or not?
Here's the situation.
When a user is editing a given piece of data, they're allowed to add messages/comments. These are stored as child records in a SQL database. Clicking on the Add Message button brings up a panel (pnlMessage) courtesy of the AJAX ModalPopup Extender. This takes some input and, when the "Send Message" button in the panel is clicked (I learned the hard way to NOT make that the 'OkButton' property), the message is stored in the database and an email is sent to the intended recipients. No problem there.
However, I need to be able to allow the user to add new email addresses (so long as they are registered in our database). I have another ModalPopup / panel combo (pnlSearch) that's tied to a button on the previous panel (pnlMessage).
The user is supposed to be able to add an email or click on a search button to populate a list to choose from.
The pop-up panel (pnlSearch) comes up just fine, but clicking the "Lookup" button (which instigates the search and returns a collection of records that the user is supposed to pick from) closes the panel.
Previously, I ran into the problem of having the Button.Click event never firing when I put the Button into the "OkControlID" property (the CancelControlID works fine since I don't want to do anything). Removing the "OkControlID=Button" line allowed it to work perfectly with the Button.Click event firing as expected.
So now I have the Search panel with a button for "OK" and a button for "Search" - but the panel should stay up and visible after the Search.Click does it's thing. Am I missing some property that basically says "don't close the panel when this button is clicked"? Of course, if I bring up the panel again in the same session, the results from the previous effort are there (the search results).
I'm trying to avoid having to go to javascript as there isn't much, if any, of that experience available to support this.
Help!
Thanks in advance.
You can put the Search panel and the Search button inside of an UpdatePanel. Anything inside of the UpdatePanel will be able to post back without closing the popup. Be sure not to put the buttton that is supposed to close the popup inside of the UpdatePanel.