AJAX :: Implement A Comment Box, Such That The Page Doesnot Reload?
May 26, 2010
i thought of a textbox and a submit button,when submit button clicked comment extracted from textbox and saved into the database using sql.and displayed in literal.but all this is server sided,please help by providing example script for the following,please note i googled and googled but cannot find a satisfy easy and efficient answerOnMouseClickextract text from textbox saving it to a variable send the variable value to server instructing it to save the value in a db in a particular field of a particular table.simple words,facebooks comment box and the status updates box how are they implemented,thousands and thousands of them use it, still it doesnot get slow no postbacks observed to page reloading etc.
Like normal chat application i have two textboxes one to get text from user and one to display that text. i am using wcf service to provide communication with one user with other. I want to reload only the textbox that contain the entered text by the user not the other controls. i have timer and meta tag but nothing worked.
everytime I click on the link a postback is fired (IsPostBack = false). Can I avoid this? I have a counter on the page and everytime a pic is showed this is recognize as a full page load (i.e. increment counter) as IsPostBack = false!
I have a gridview. Every row have 'Edit' button. When i click 'Edit' , one div(that is chldren of updPreview updatepanel) is show for input data. After i input data on that div, i click 'Save' button and when it successful, my page is reload by
On my website I have a lot of textboxes and radiobuttons. The user fills in his data and selections and then the information is written in a file by xml serialization. This all works fine. Now the requestor want the possibility to read the xml file and show the data on the page again for editting purposes. To read the file I use the Ajax AsyncFileUpload control. When it is finished uploading it fires the following event:
[Code]....
The ReadData sub is reading the data from the file and placing it in the controls. But then nothing happens. Th page is not reloading itself to show the data.
i have two page in asp.net and one page is a main page(Page 1) that have button Next. when i click the Next button it's will go to the Next page(Page 2) but i don't want the page reload. i try to use the Script Manager, UpdatePannel but it still reload page.
I am reading a tutorial article on this site about Partial Rendering using ScriptManager.EnablePartialRendering - [URL] The article uses button_click to demonstrate Partial Rendering without full page reload. I copy exactly the same codes but everytime I click the button the page refreshes.
I have examined after the page is loaded - ScriptManager1.EnablePartialRendering = true ScriptManager1.SupportsPartialRendering = true I am using vs2005 .NET 2.0 and AJAX extension 1.0 (same version as used in the article)
I know practically nothing about AJAX, but fully intended to utilize it in the future. Right now though I am noticing a behavior that may require that I implement it sooner then I planned.
I have been working on a fairily sophesticated web form that is made up of tables, dropdown lists, map buttons, and labels. As various controls are selected, specific tables are enabled or dropdowns/labels populated with information. All of this is working great, but when I put it all on a server and accessed it from a remote location, I noticed that every single action caused the entire page to reload.
From what I have read, it looks like AJAX and the UpdatePanel control will allow me to only refresh those areas that should be refreshed. Before I look further into implementing this, is this the only way to go? From what I have read on some other blogs, the UpdatePanel has some high performance costs.
I want to create a web page with a table on top and a scrollable panel. Similar layout to yahoo new email page (list of inbox messages on top and the panel displaying details). Further more, the table displays general information list and the panel displays a list of detail records. when a user clicks a table row, the panel is going to jump to the specific detail row, similar to html anchors. Do you know how to implement this?
I am trying to create a comments page for users to review and comment on an article. I have 2 buttons on each comments posted by users; "Like" and "Don't Like". I am stuck with how to track which user voted already for a given comment. I am thinking of two options and would like to know if they are they way to go or is there a better solution.
Option 1: I have created a table in my database with stores, the comment id, the userid of the user who rated it and the value "like" or "don't like". So each time I have to query my table to find out if this user indeed vote for a given comment. The table unfortunately grows exponentially!!
Option 2: I store the commentid, userid, and "like" or "don't like" value in a cookie on the client's machine. I read the cookie and find out if the user has already voted on a comment. This is proving to be VERY quirky with cookie expiration, growing cookie size and also multiple users on the same machine.
In either way, my test case of ~1500 users, and 2 Million comments, this is getting to be HEAVY on both methods. Is there anything better?
how to implement Search and displaying results on same page using ASP.net webform and simple way to implement paging with Ajax. The top of the page should have the search criteria and once button clicked, it should display the result below with checkbox so that user can select and delete any / all of the search result.
when the page above loads, i have link buttons on the left and an empty maincontent area next to its right. what i want to do is display an entry form in the main content on click event of the link button on the left. the second form is as below.(form not based on master page).
how do i perform this task and if i wanted to display a different form in place of the first one that appeared in the maincontent area, how do i go about it?
is it possible to use Ajax with ASP.NET MVC 2 to reload a user control, pass along a new Model and have it update all the values that make use of this model without refreshing the rest of the site content?
I have a DevExpress ASPxRadioButtonList which does not have any data source for the items. When trying to assign the selected item the control doesnt have any items. I have spent hours looking at this as it is set up to similar controls which work fine.Here is my code:
When trying to find the Item by value it returns null for the ListEditItem. The DataTable dt has a value for priority for 3 and the item should be in there as its hard coded in the ASPX.
I have a small issue with ModalPopupExtender. It opens in an Iframe initially, and shows the page: dd_contact.aspx After I have entered the contact details, the IFrame redirects to the contact_details.aspx page to show what I have loaded.The problem is when I close that modalpopup-window and click again to show the modalpopup, the iFrame shows the contact_details.aspx page, and not the add_contact.aspx page
I have a dashboard made of multiple webparts. One of the webpart is a usercontrol with a timer wrapped in UpdatePanel. When it is loaded in the dashboard I notice that it causes a Page_Load, and that triggers personalization procedures aspnet_PersonalizationAllUsers_GetPageSettings and aspnet_PersonalizationPerUser_GetPageSettings to fire.
Can can I avoid that? I read many posts on Timer controls within UpdatePanels, and it is my understanding that Timer would cause a full page postback, but only render the UpdatePanel that it is part of. However, these personalization functions execute every time Timer ticks.
I am creating a custom cookie and have overloaded the Iprincipal class and all that good stuff. My cookie works correctly and I am able to retrieve the roles of the users successfully, but the admins have to reload the default page after just logging in to see the admin only button. Once they visit a new page on my site and return to the default page, the button is there.
I read somewhere that the cookie is created last and has something to do with a response to the HTTP. TBH, I am new to this stuff and don't understand exactly how that works, but I see how it effects my program. I am currently creating and planting my cookie in the page load of my default page. Should I be doing it somewhere else, perhaps in the log-in page? I tried that, but the same issue still exists. Am I missing something?
The reason i need to reload page is that in the page load im creating cookie. THis cookie helps me to avoid 1 messagebox every time i load page it loads only the first time.
but the problem is that when the page is loaded it will not disappear when i use other widgets on the page.
but when i go to another site and i go back then it works. So i clearly need something to clear the cache or reload.
I have a Web app using Forms authentication. I Use Timeout in Web.Config to TimeOut from application that is working fine and I am Redirected to Login page with Message on page "The application timed out. Please ClockIn/Login." When I am Logging again I am Redirected to the same page with same error message and after that if I try Logging again second time I am able to Login.
Following is the code from different form which i am using.
I add cascading drop down in a place holder during page load. When i submit the entire form, i found out that my drop down list is reload and my selected value is not selected.
Using VS2005, VB code behind, I have a page with two DropDownLists and corresponding CascadingDropDown's. I want to automatically postback when the second DropDownList index changes, therefore I have set its AutoPostBack="true". I have wired up the web services and the lists are getting populated as expected in IE7+, FireFox and Opera, but when I view the page in a WebKit based browsers (Chrome, Safari) the CascadingDropDown appear to load in an infinite loop. I included theWebkit compatibility fix but the issue persists. I've attached a working example below.Anyone know why Webkit browsers are infinitely reloading the cascading dropdownlists? Is there a fix?Source code below:Markup:
