How To Execute Web Services Asynchronously In Server Side When Called By JQuery's .ajax
Mar 22, 2011
I have an ASP.NET (3.5) web page which calls a few web methods (SOAP based) using jQuery's .ajax method. The web methods implement 'ScriptMethod' attribute and return JSON data. The web service file (asmx) is local to the same project.
I noticed these web methods execute synchronously on the server which means they run sequentially and affect performance negatively, some methods are waiting, when some of them are slow.
I read this article and I am not sure if I understand that WebMethods which implement Scriptmethod can run synchronously only (they implement IHttpHandler not IHttpAsyncHandler).
If this is true, I might have to change the design. I am looking for other designs, maybe like using WCF, where the browser can call webmethods using JavaScript and the web methods run asynchronously on the server.
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[Code]....
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[Code]....
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"bServerSide": true,
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[/table]
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Mar 22, 2010
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Code:
Dim strScript As String
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Open data"></asp:Button>
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Oct 31, 2010
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We bind dropdown using json and web service but when we click on save button we can not get selected value of that dropdown...
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May 18, 2010
i am not sure if my design have flaw but would like to know what others have to say, i am in a situation where i am trying to acheive two things in one click.
using : asp.net web form
i have a web form with few textbox and a gridview control and a button.
if i click on the button i am executing two things
1) asynchronously get data from server to client (working great) and able to display the data in the textboxes.
2) same click i want to bind the gridview.
[Code]....
recap:
1) jquery script execute asynchronously to get data from server to client and display in the textboxes
2) server side code to bind the gridview.
PROBLEM:
if i have onClientClick="return LoadDataById(); then it executes ONLY ajax code and does not execute server side but if have onClientClick="LoadDataById(); then it executes client and server but textbox value wipeout. (the textbox value popuplate through ajax)
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Executing Server side code using Javascript. Here is the solution.In the Asp.net forums, I often see the question asked, "Can I call server-side code from the client/JavaScript?" Almost invariably, the responses given are "No, the client cannot access the server," or "You can only use WebMethods or PageMethods." The first response is not entirely correct, and unfortunately, WebMethods and PageMethods are static methods and therefore have no way to directly access the page.This is why I present to you the following "hack". I call it a hack because there really should be some way built into the ASP.NET AJAX Extensions that allow this approach directly. Instead, it relies on using controls in a manner that they aren't necessarily intended in order to obtain the desired result. But this "hack" does have a redeeming quality—it's incredibly easy.The Code:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb" Inherits="Default2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[code]...
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Oct 7, 2010
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Mar 18, 2011
The text and style runs properly but the server side code is ignored. How would I write this so that it's not ignored? Do I have any options?
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Jun 22, 2010
At first, I should confess that I am not sure if it is a good practice or not. I have came out with the idea due to my practice of jQuery.ajax().
What I want to achieve is depended on this design:
//Server Side; an .asmx file contains a method like this:
[WebMethod]
public string NewContent(string parameter)
{
string renderedHTML = string.Empty();
switch(parameter)
{
case ("person"):
// create an asp.net panel with
// some controls in it that has form elements to enter person data
// render control and assign its html to renderedHTML
break;
case ("department"):
// create an asp.net panel with
// some controls in it that has form elements to enter department data
// render control and assign its html to renderedHTML
break;
}
}
And from the client I want to do this:
// Some html in the page
<script type="text/JavaScript">
jQuery.post('ajax/myWebServices.asmx/NewContent'
function(returnedPanelContent) {
$('.result').html(returnedPanelContent);
});
</script>
Question is:
How can I make it work? Briefly to have a webservice method that returns different asp.net Panel control content created programmatically so that I can get this control rendered as HTML in my client-side and insert it to my web page?
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Apr 15, 2010
I have been presented with a problem which requires me to print PDF files from a server as part of an ASP.NET web service.
The problem is further complicated by the fact that the PDF files I have to print can ONLY be printed using Adobe Reader (they were created using Adobe LiveCycle and have some strange protection in them).
This piece of code seems to do the trick in the Visual Studio development web server, but doesn't do anything when the site's running in IIS. I'm assuming this is probably some sort of permissions issue!?
Dim starter As ProcessStartInfo
Dim Prc As Process
' Pass File Path And Arguments
starter = New ProcessStartInfo("c:program files...AcroRd32.exe", "/t ""test.pdf"" ""Printer""")
starter.CreateNoWindow = True
starter.RedirectStandardOutput = True
starter.UseShellExecute = False
' Start Adobe Process
Prc = New Process()
Prc.StartInfo = starter
Prc.Start()
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May 7, 2015
My problem is that I have a jqury function basically I want to add gridview row into data base .so that pupose I am doing that by accessing webmethod ,but the web method can’t call from that code .
My data can’t save into data base I will check it.value should be passed but problem is that this function can’t call webmethod I will check it doing debudg.
my function should be call webmethod
Following my code
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" type="text/javascript"> </script>
<script type="text/javascript">
$(function () {
[Code].....
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