Jquery - Why 3 Extra HTTP Requests Are Done If You Use Ajax Call To A .net Web Service
Apr 4, 2011
When I was reading the blog Using jQuery to Consume ASP.NET JSON Web Services
I have seen this argument:
"By using jQuery to call the web service directly, we've eliminated over 100 KB of JavaScript and three extra HTTP requests. "
Why does the ASP.NET AJAX call to a .NET Web-Service needs 3 extra HTTP requests? What are those requests? (I wonder how jQuery manages the call with lesser HTTP requests in this case).
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Aug 4, 2010
I have one ajax call web service, and want to add some http headers using javascript, can we do that use setrequestheader in ms ajax?This is my javascript
[Code]....
[Code]....
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Jan 28, 2011
I have this Aja.svc in my root folder
[ServiceContract(Namespace = "")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Aja
{
[WebGet]
[OperationContract]
public string Hi()
{
return "hi world!";
}
}
and I'm trying to do this: $.get('Aja.svc?method=Hi', function(d) { alert(d.d); }); In firebug I see that the result is HTTP Error 404.17 - Not Found The requested content appears to be script and will not be served by the static file handler. I use .net 3.5, jquery 1.4.4
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Jan 13, 2011
I created a number of standard WCF Services (Service Contract and Host (svc) are in separate assemblies). I fired up a Web Site in IIS to host the Services (i.e., address is [URL]). Then in my Web Site project I added the reference. I am able to call the services normally. I am needed to call some of the services client side. Not sure if I should be looking at articles calling WCF services through AJAX, JQuery, or JSON enabled WCF Services. Some of the changes I made was adding the following to the Operation Contract:
[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = "SetFoo")]
void SetFoo(string Id);
Then this above the implementation of the interface:
[AspNetCompatibilityRequirements(RequirementsMode =
AspNetCompatibilityRequirementsMode.Allowed)]
Then in the service webconfig I have this (parens are angle brackets):
<serviceHostingEnvironment aspNetCompatibilityEnabled="true">
<baseAddressPrefixFilters>
<add prefix=[URL]>>
</baseAddressPrefixFilters>
</serviceHostingEnvironment>
<serviceHostingEnvironment multipleSiteBindingsEnabled="false" />
Then in the client side I attempted this:
<asp:ScriptManagerProxy ID="ScriptManagerProxy1" runat="server">
<compositeScript>
<Scripts>
<asp:ScriptReference
Path=[URL]/>
</Scripts>
</CompositeScript>
</asp:ScriptManagerProxy>
I am attempting to call the service like this in javascript: wcfservices.SetFoo(string Id); Nothing is working. If it is idea or a better solution to call JSON enable, JQuery, etc.... I am willing to make any changes.
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Feb 22, 2011
I have this method in asp.net ajax enabled mvc service
[OperationContract]
public TestRun GetTestSuite(string testSuitName) {
TestRun testRun =
AdapterFactory.CreateTestRunAdapter().GetByTestSuiteName("testSuit");
return testRun;
}
Where TestRun is Created using entities framework against TestRun table. I am using following ajax method
function getTestSuite() {
$.ajax({
type: "POST",
url: "Services/TestRunService.svc/GetTestSuite",
data: '{"testSuitName" : "' + testSuiteName + '"}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
},
//If the call fails
error: function (xhr, textStatus, errorThrown) {
alert(errorThrown);
}
})
}
I get undefined error. If I return string from service it works. Do I need to change dataType: "json" to something else?
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Nov 6, 2010
Iīm using jQuery to make the ajax calls to web services. Iīm not using json, I want the information in XML. If I donīt pass parameters and I make the WS parameter less it works but if I want to pass a value as parameter (I tried int and string) it doesnīt work. Here is my code:
jQuery: [Code]....
The web service
[Code]....
The error that I get from firebug is an exception System.InvalidOperationException and it says that the parameter region_id is missing.It canīt be very difficult because it works without parameters but all the information I find in internet
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Jun 18, 2010
What's the simplest and most effective way to selectively redirect HTTP requests to your ASP.NET page to its HTTPS equivalent? For example, if my page site URL is [URL], I want to redirect some (or all) page requests to [URL] What's the easiest way to do that?
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Mar 10, 2011
I am trying to call WCF 4 Http Web Services which are hosted within an ASP.NET application. The Service is protected behind SiteMinder.
I was wondering how I could programmatically call the web service, and more specifically what information will I need to pass to be authorized within SiteMinder to access my resources.
I am making the request from the ASP.NET application running on the same server, so I have access to the authentication cookie.
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Mar 16, 2011
I use four different update panels, that use the same timer as trigger.
1) Will the 4 update panels create 4 different HTTP requests to the server?
2) I'm using 4 different panels as the controls are located in different parts of the page, is there a way of putting them in the same update panel?
3) Is this a good coding practice?
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Dec 9, 2010
A customer wants us to create an ajax-enabled web application that can be used to manage their IT environment (Active directory, mail, file security, ...). However, as the team that will support the web application does not know anything about these IT systems, they would like to split the coding so that all interfacing with the IT environment is done via PowerShell, which is known by the administrators of these systems. This would mean that if new functionality is required, the web team can just create an additional web page and interface and use PowerShell scripts that get created by technically skilled people in that specific topic (ie mail administrators). I don't see an issue using this approach for requests like adding a user where latency is not an issue, but I do wonder if this is feasible for interactive content with Ajax.
Ie I would like to implement a google suggest like search for AD users. This would mean that ie for every x keystrokes (or x seconds whatever approach I implement) an Ajax request will be made and the web application or web service will than use PowerShell to get the data. Taken into account that up to about 75 users can use this feature, is this something that would work? Not only performace-wise but also the number of connections (I read about the Powershell 5 remote session limit but also that it could be put to a higher number)? The example above is probably the most resource heavy Ajax requests (and can be optimized by caching), so taken into account they don't want this nice feature, are basic PowerShell scripts in ajax request really an option. My gut feeling is telling me this is a no-go, but I don't want to exclude the option just because it's not something I usually would do.
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Feb 18, 2011
I wanted to know what this extra querystring data is and where it's coming from.
jQuery.ajax({
url: 'MyFile.aspx/ProcessRequest',
data: JSON.stringify({status: status }),
async: false,
dataType: 'application/json',
[code]...
Using tamperdata and also viewing the Request.QueryString in the debugger the resulting url is:
http://localhost/Folder/MyFile.aspx/ProcessRequest?_=1298057136790&{%22status%22:%22pqs%22}
So where does this _1298057135790 come from and why is it there?
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Dec 11, 2010
i find a lot of websites that have some parts in the page that uses ajax much more faster than i used to see ajax requests
like changing views using tabs when i click a tab it changes content very fast than i used to in my web applications using Asp.Net and Ajax Control Toolkit
and also a very quick paging in repeaters or grids than i ever developed in my web apps
like this website [URL]
so i need to know which technology used to achieve this this website is developed using .net
but i need to know is this needs another technology to learn (from where can i learn it)
or is it just asp.net + ajax or whth other technology is it MVC
also i want to know if MVC is better than asp.net + ajax in concern with performance
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Dec 12, 2010
I have created an WCF data service in a new asp.net web application and i want to call this web service from another web application using jquery, but it always returns null.
My jquery call looks like this:
[code]....
Note that [URL] works in the browser but since the jquery call is from localhost:3410 i assume its a problem with cross domain.
I have been reading that i should use jsonp for this, but i have a hard time figuring it out.
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Sep 14, 2010
I'm trying to call a web service and the passed string may have punctuation, depending on what the user types in.I currently have an HTML textbox and a jQuery call to the .NET web service. I definitely think the string with punctuation fails because jQuery will send the string wrong, so I tried a few different javascript encoding functions I could find. I was never able to encode it successfully and decode it in .NET, saving the string with punctuation.
Basically I have a textbox that a user can update their status in. If the user wants to use punctuation, I'd like them to be able to. How can I accomplish this with jQuery and .NET?
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Apr 7, 2010
i'm trying to intercept ajax requests with jquery, to display a waiting message like with using plugin BlockUI, but how can i intercept requests sended by the UpdatePanel provided from asp.net framework, is some way to take the trigger?
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Oct 20, 2010
I am trying to use the below code to call a wcf service method for Autocomplete functionality in a TextBox. I have written the following query:
$(document).ready(function () {
$("#<%= txtCompany.ClientID %>").autocomplete [URL], {
dataType: 'json',
parse: function (data) {
var items = data.d;
var parsed = [];
for (var i = 0; i < items.length; i++)
parsed[i] = {
data: [items[i]],
value: items[i],
result: [items[i]]
};
return parsed;
}
});
});
The same query works if I pass a Java Script array variable instead of the wcf service method. The wcf service method contract is:
[OperationContract]
[WebInvoke(Method = "GET", BodyStyle = WebMessageBodyStyle.WrappedRequest, ResponseFormat = WebMessageFormat.Json)]
string[] GetTestCompanyList(string prefixText, int count);
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Dec 6, 2010
I have Master Details JQGrid.My details JQGrid have Edit,Add,Del options. my problem is when I click on submit button to add data or edit data I faced with this error: "500 Internal Server Error" and it's response is
[Code]....
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Jun 22, 2010
I am new to WCF, I was using web service asmx before. I have trouble on making my wcf JSON ajax service work through http like asmx.Could you help me see what wrong in my code?My WCF services are defined in my website application folder. My aim is to call this service in my aspx page java-script code and return complex object back as JSON to my javascript. I have no problem on doing this through classic asmx web service.
When I try to test it through my browser by type this in the URL , URL-http://localhost:3849/WebServices/Account/WCFCompanyService.svc/GetAll. it return "Method not allowed."
But if I type just this URL-http://localhost:3849/WebServices/Account/WCFCompanyService.svc, it return this:
WCFCompanyService Service
You have created a service.To test this service, you will need to create a client and use it to call the service. You can do this using the svcutil.exe tool from the command line with the following syntax:
svcutil.exe URL-http://localhost:3849/WebServices/Account/WCFCompanyService.svc?wsdl
This will generate a configuration file and a code file that contains the client class. Add the two files to your client application and use the generated client class to call the Service. For example:
C#
class Test { static void Main() { HelloClient client = new HelloClient();
[Code]....
This is my Ajax-enabled WCF service code:
[Code]....
This is the web.config service model setting
[Code]....
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May 26, 2010
I'm fairly new to ASP.Net MVC 2 and understand the MVC pattern in itself. But my question is what's the best way to populate dropdownlists in the UI sticking to the MVC pattern. Should I be going through the controller? Every article I've seen to do this shows how to do it using javascript and jquery. I have a test application that I'm re-writing in MVC2 I have my dropdowns working with jquery basically calling a WCF Data Service that returns JSON which populates the dropdowns. Seems to me though that this is bypassing the controller and going straight to the model therefore strictly violating the MVC pattern. Or am I missing something obvious here. You thoughts or best practices would be greatly welcome here.
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Dec 27, 2010
I have a web service with the following contract:
POST /Service/service.asmx HTTP/1.1
Host: xxx.xxx.xxx
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "xxx.xxx.xxx/Service/Method"
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header>
<Request xmlns="xxx.xxx.xxx/Service/">
<transactiontype>string</transactiontype>
<username>string</username>
<password>string</password>
</Request>
</soap:Header>
<soap:Body>
<Method xmlns="xxx.xxx.xxx/Service/">
<xml>xml</xml>
</Method>
</soap:Body>
</soap:Envelope>
And I am trying to call the service using jquery. This is my code:
$.ajax({
url: serverUrl + 'Method',
type: "POST",
dataType: "xml",
data: { xml: "xml" },
beforeSend: function (req) {
req.setRequestHeader('Header', '<Request xmlns="xxx.xxx.xxx/Service/">'
+'<transactiontype>4</transactiontype>'
+'<agencyName>name</agencyName>'
+'<username>user</username>'
+'<password>pass</password>'
+'</Request>');
},
success: function (data) {
alert(data.text);
},
error: function (request, status, errorThrown) {
alert(status);
}
});
However, the header content is not passed to the web service? How would I go about passing the header credentials to my web service call?
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Jan 14, 2010
Yesterday I upgraded to MVC 2 RC. I have several jquery ajax requests that worked fine prior to the upgrade. Sometimes they work, sometimes they don't.
I know the MVC team made changes to the framework to protect against Json Hijacking so that GET requests are not allowed (by default) and I have changed my jquery ajax code to use 'type: "POST",' and then adorned the Action Method with the POST verb.
Again, the odd thing about this is that it works sometimes and other times it doesn't. When it fails, there are no error details. The error code is 12030 or 12031.
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Jan 3, 2011
I have a simple web service that isn't working with a standard jQuery call. The code is below. The jQuery will execute and succeed, but on debugging, the service argument is always null. I've had it separated as 4 string params in a json string and that didn't work either. I must be missing something on the config side, but I can tell what it is.
[Code]....
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Mar 3, 2011
I want to call .asmx service from jquery
.asmx service will return multiple data from database.
I need to get those data to jquery on client side
and then i need to put each data into their respective textfield on the client side
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Apr 20, 2010
i got a this exception when i calling my web service in producction server.i already test the web service in server side and this don't have problemasbut when i calling the web service in the development site this throw a
(spanish)"Error de la solicitud con el cÃģdigo de estado HTTP 417: Expectation failed." or
(english)"The request failed with status code HTTP 417: Expectation failed."
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Mar 21, 2011
How can I capture all the http requests for a particular URL in .NET?
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