AJAX :: What Is The Best Method To Use ICallback Or PageMethods With JQuery
Apr 3, 2010
I am creating a website in asp.net its a very big site about 250 pages and with a big sql database. I am confused as which ajax method i should follow. There are three options.
1. ASP.NET UpdatePanels -: Simple to use but causes a lots of uneccessary request and viewstate. I want my pages to open as quick as possible.
2.ICallback-: Causes less request and renders the page quickly. But security concerns and viewstate are there.
3.Page Methods with jQuery-: No Security anyone can quickly hack the parameters passed using "POST" mehtod.
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Similar Messages:
Jan 19, 2011
I am using ASP.net with WebMethods to show data to the customer and save data entered by the customer.
My current framework uses javascript to create an xml with all of the values of all the html elements in de "div" (or other element). This xml is converted to a string and send to the webserver using PageMethods.
When I receive this xml (as a string), I parse it with my own XmlDataParser which does some security checks.
I need to parse the xml to an XmlDataParser in every PageMethod I use, and I also need to catch different exceptions (like exceptions that are thrown when data is validated) to show them to the user (=> The reason why is explained in one of my previous posts: [URL]
I wonder if it is possible to write a wrapper around the WebMethod, so I can parse the xml to the XmlDataParser in this wrapper, and pass it on to the code behind, and process exceptions that occur in the code behind?
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Jan 19, 2010
is it possible to call a custom method or class before accessing webmethod from pageMethods ?
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Oct 7, 2010
One reason we currently use UpdatePanels for doing our AJAX is because our BL and DA layers pass around the Page.User.Identity for authentication.
Is there a way to access this?
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Jul 12, 2010
I've a static page method in web form application and I want to call method on private class level variable from it as shown below. I'm using jQuery to call the page method.
private readonly ICatalogBLL _catalogBLL = new CatalogBLL();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
_catalogBLL.GetSomething();
}
}
[WebMethod]
public static UpdateSomething(int i)
{
//Want to do as below. But can't call it from a static method.
_catalogBLL.UpdateSomething();
}
UPDATE If I call it as said by John Saunders, won't it use the same instance for requests from different users as it is within a static method?
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Jan 31, 2011
If I use jQuery AJAX to call a specific ASP.NET page method how to have that method return a value back to the AJAX method that called it?
Update
My situation is I have an existing web application with many existing methods. I would like to be able to use jQuery to execute some of these methods and then update the UI with the results. My mandate is to stay away from ASP.NET AJAX and stick with jQuery. Management is concerned about continued development and support with ASP.NET AJAX from Microsoft. I agree with them.
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Dec 21, 2010
I am developing web application and in application i need to make call of jQuery using .ajax(); method with datatype is set jsonp. Now all works well with limited data but problem start to occur when data size is increasing......
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Nov 16, 2010
My friend is trying to call a page method from a seperate js file. We have added a scriptmanager to the page and set EnablePageMethods to true.His functions are decorated with <Webmethod> and they a Public Shared Functions In the js when we run the code it breaks on
Code:
Pagemethod.Test(var1, var2, OnSucceeded, OnFailed)
it says "object does not support this property or method"I created a test app and called a page method and that worked fine. How do I debug this issue. It doesn't seem that his project is seeing the Pagemethods
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Feb 8, 2010
is it possible to download any zip file to client machine through icallback.
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Mar 4, 2011
$.ajax({
type: "POST",
url: "jquerychat.aspx/SendMessage",
data: "{msg:'Hello',userId:1}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
// Replace the div's content with the page method's return.
// $("#txtMessages").val(msg.d);msg:'Hello',
},
error: function(){
alert('failure');
}
});
});
[WebMethod]
public static string SendMessage(string msg,int userId )
{
NameValueCollection nvc = HttpContext.Current.Request.Form;...................
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Apr 25, 2014
in default.aspx i am calling web method. bt every time its going to error method.
code is...
function login(btn) {
alert('a');
var email = document.getElementById("txtUserName").value;
var password = document.getElementById("txtPass").value;
[Code].....
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Aug 18, 2010
Why Ajax pagemethods are static?
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Mar 28, 2011
I have defined a Shared Function in the code behind and a javascript function to call the webmethod. Also, I have EnablePageMethogs set to true in ScriptManager.
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Mar 2, 2011
I am trying to send data to my code behind method. It works except when I add to the data param.
[code]....
UPDATE: After seeing what client side errors were being thrown it seems that the ID is undefined. Is my method of getting the elements ID incorrect? Keep in mind I am using jsTree and ca I possibly use (obj)?
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Feb 2, 2010
How to use jQuery to call ASP.NET AJAX Page Method?
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Aug 11, 2010
From client side, I need to call a server method that is not static. For example, I got the following user control ucData (private instance of code-behind) that is Databind in the load event. The server method I need should return ucData.IsValid(). So it can't be static
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Mar 20, 2011
I am using asp.net3.5 C# with Jquery
I have created a webUserControl timer.ascx, I have a page showTime.aspx I have added timer.ascx into ShowTime.aspx on drodown change I want to display the current time.
but I am getting this error
This type of page is not served. Description: The type of page you have requested is not served because it has been explicitly forbidden.
[Code]....
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Jul 24, 2013
I have gone through your article [URL] ....
How can we access it through [URL] ....
If I do like this I get [URL] ....
Method not allowed.
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Jul 15, 2010
I wrote a code to call some event...
[Code]....
and
[Code]....
js calls this code and I get object reference not set to an instance of an object
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Jun 14, 2010
Ran into a bit of problem when using PageMethods when calling a webmethod in the code-behind. My markup page has a radgrid which gets populated via the objectdatasource.Pagemethods works and returns data as expected when the objectdatasource binds the radgrid with some data but not when the objectdatasource returns nothing, i.e. radgrid is empty. PageMethods call has got nothing to do with the objectdatasource, I'm simply using its output to build a list of checkboxes dynamically on the client side using Javascript. And this is how my code snippets looks like:Markup page:
<script type="text/javascript">
function CallGetARInvoices(src,dest)
{
[code]...
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Nov 20, 2010
I am doing a small application in asp.net using JQuery
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Mar 25, 2010
Aspx Page:
$(document).ready(function() {
$("#btnn").click(function() {
$.ajax({
type: "POST",
url: "TestPage.aspx/emp",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
}
});
});
});
CodeBehind:
public void grdload()
{
GridView1.DataSource = GetEmployee("Select * from Employee");
GridView1.DataBind();
}
[WebMethod]
public static void emp()
{
TestPage re = new TestPage();
re.grdload();
}
I Can't Gridview Data Load ? How To Make GridView Data Load?
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Oct 6, 2010
How can I upload files asynchronously with JQuery?
I have a file upload field, after the image was selected, i make a jquery ajax post to an aspx page's page method. My question is, how can I pass that image via jquery? When I do $(this).val() it only gets the file name. I want to pass the image object itself.
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Oct 1, 2010
I am using an AJAX dropdownlist control with two dropdownlist. Instead of using a webservice to populate the data, I used the pagemethod to populate. My problem is the second droplist won't populate. I get a server error, 500 in the droplist. The first droplist populates fine.
BUT here's the real kicker. If I reverse the order of the public static function such that GetHelloList2 comes BEFORE GetHelloList1 in the code, then the GetHelloList2 works ...... it just seems like it is only firing one pagemethod event and allowign only one.
[URL]
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Oct 26, 2010
Since last week I've had a really odd issue with PageMethods, the forms authentication cookie, and the back button which i've never seen before.
Essentially, I have a 'home page' which on document.ready (using jQuery), loads some data through PageMethods, and then renders a list - from which you can click through to a details page about the item. In general use, it works fine. However, using the back button after clicking through (ie: going back to the home page), it throws a PageMethods error. The browser's 'authentication required' prompt appears, and if you click cancel, the server returns a 401. The error returned by PageMethods on the client side is 'authentication failed'.
After inspecting the request in Fiddler, the forms authentication cookie isn't sent with the request, which would explain why it is happening. My fiddler entry for the request looks like this:
[Code]....
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