MVC :: Updating A Listbox Without Postback With Jquery?
Feb 15, 2011
I have a listbox in my view:
@Html.ListBoxFor(m => Model.Runtimes, new SelectList(Model.Runtimes, "Id", "Runtime"))and when I access the page all the runtimes in the model are displayed as expected. I also have a button in my view with a jQuery function attached to it: btnIntermediate.click(function () { timer.addIntermediate(function (runtime) { url = "/Timer/SaveRuntime/?runtime=" + runtime; $.get(url); }); });It saves the runtimes to the model. My problem is how to update my Listbox with the new entry in the model without triggering a postback(since it will stop my timer)?I'm
I am currently working with a large query of client name, and instead of using a dropdownlist, I have done the follow:
I setup a Textbox for the user to enter some text, and then click the search button. Using a modalpopupextender (AJAX), and panel appears showing a listbox displaying clients that are like the text entered. The user then picks one, hits ok, and the value is returned to the text box.
Currently, the listbox is not displaying anything. Here is what I have:
Game WinningID (FK) LoosingID (FK) Score Player ID (PK) Name Rank Country
My Game Table contains score of Players wins against each other. So WinnindID (Player1) Vs. LoosingID (Player2) has a score of 4.
That being said. I am creating a web page in which I have to show the score. I populated ListBoxes with the Player Names and have two labels to show the score.
Label 1: Showing Player1 as opponent and won. Label 2: Showing Player2 as opponent and won.
A ListBox is being filled from the database, from a SQLDataSource. Im setting the parameters in its _Selecting event. Except when it is done getting its new Data, the ListBox isn't updated with this new data. Eventhough i rebind my ListBox to the DataSource.
I do have a listbox control and a button to update values of the list box with few other values of the form to the database. If i select 3 values in the listbox, it has to update the database in 3 rows (Unique for Listbox value) with the other value being the same. I use a details value for inserting values.
I made a web part use ASP.NET. There are a listbox and two buttons on it. When you click the Button A, it would add a new item into the listbox.When clicking the Button B, it would postback the list items data. But when you click the button B, the number of listbox number becomes twice.
I'm having trouble processing a listbox after selecting some items from it. In my markup, the listbox is contained within an asp:panel and is populated during page load in the codebehind. That part works fine.
It's when I select various items and submit that I have trouble. My handler loops through the listbox items but doesn't see any as being selected. I'm not sure why.
In my btnUpdate_OnClick handler I can't see any listbox items that are marked as selected. I assume something strange is going on with respect to postback and the panel?
I have a dropdown listbox whose datasource is a dictionary.
When I have added items to the list and try to select an item from the list, the item I selected does not get the focus. And this comes when I changed the property autopostback to true.
Here are some of the codes which are relevant to it.
I'm trying to add a JavaScript function to show all selected items from a ListBox as concatentated strings in a Label on the page. It's needed because AutoPostBack="true" will cause the ListBox to scroll all the way back to the first selected item.
So this code works:
<script type="text/javascript"> function Updatelist() { var sel = document.getElementById('<%=lstbxStuff.ClientID%>'); var lbl = document.getElementById('ctl00_cph_lblSelectedStuff');
[Code]....
Unfortunately I still need the code behind SelectedIndexChanged delegate. Is there a way to use both of these without doing a PostBack? When I set AutoPostBack="false", my delegate never seems to be reached.
I have added a listbox, and on page load I populate it with a few items. Then I have added Javascript code so that the client can click a button to add more items to the listbox. But when the page is postedback I am only left with the items that were loaded from the page load....
Is this the way .net operates?
I was reading that if I need to get all the items in the listbox, I will need to add a hidden field and write out the items in a CSV format, and then use that hidden field to work out the items in the listbox..
I have an asp.net listbox with 15 rows and auto postback when the selected item is changed. This works as expected but, when the form is re-loaded, IE scrolls the list so that the last selected item is now the top visible item in the list. This produces a confusing/jumpy effect for the users and makes the listbox more difficult to use than it needs to be.
Is there any way to get the list scroll position to stay as it was before the postback? i.e, if I select an item from the middle of the listbox, the listbox is scrolled to the same point after postback.
I have a web page with a gridview & formview (master/detail relationship) combo. On page load the gridview shows all records from a SQL table. On my page I have a button that when clicked shows the formview in Insert mode to allow users to add a new record to the data. I have also added a column to my gridview that has a link. When a user clicks this link it hides the gridview and shows the formview in edit mode with the detail from the record selected from the gridview.
In my formview I am using a listbox control to allow users to select multiple values. The choices in the listbox are populated by a SQL data table. I have successfully written code to post the selected listbox values to my SQL data field during Insert. When the user selects a record to edit I have code in the databound event to select values in the listbox from the choices based on the value in the sql data field. This works as well. My problem is that I cannot figure out the correct code to update my SqL data when a user is editing the record and makes changes to the selected listbox value. I have included my design code for my listbox in my formview edittemplate and also my behind code that I have attempted.
I must be doing something wrong, but this makes sense to me. I have a Listbox loaded with tons of items from a datasource. A user clicks one of these items it grabs the selectedindex (an integer) and stores it in a HiddenField (works fine).
Now when the page does a complete a refresh (after postback) I want the ListBox to go back to that selectedindex that is in the HiddenField. Problem is, it seems that after postback the HiddenField is empty? Then I thought about storing the value in an Integer variable in code, but that is simply coming up as a zero at all times.
Question 1: What is the best/simplest way to do this?
Question 2: How?
I am currently grabbing it on selectedindex change
I have a link button inside an update panel. The problem is the link button on postback is updating the whole page. Tried it with a normal button and the page is not refreshed all. Here's the code.
I have multiple gridviews on one page that connect to the db with different sql datasources.
They each show records with differents "status's"(this is a column in my table). When you update the status on one record I'd like it to display straight away in the other gridview. At the moment I have to reload the page after the update in order to see the changes. Can I set the update buttons in the gridviews to postback after updating?
How can i add anything user selected from dropdownlist to listbox using JQuery? and when i post the page i should be able to retrieve "id, name" from the listbox.
've created 2 asp:listbox... asp:ListboxFrom and asp:ListboxTo. When I double click on the item on ListboxFrom it moves (appends) the item to ListboxTo... So everything works fine till here. But when I click on the submit button to process everything I don't get the selected items in my code-behind for the listboxes. I debugged on Page_Init and Page_load but it restores the default controlstate values..
1) How can I get the values in code-behind ? so the state of asp:listbox as it is added client-side code.
2) another question: when it appends to the ListboxTo the items are selected per default (they are blue). How can I avoid this?
