How To Asynchronously Call A Web Service
Aug 27, 2010
I need to asychronously call a web service from an ASP.NET application. The aspx does not need the answer from the web service. It's just a simple notification.
I'm using the ...Async() method from web service stub and <%@Page Async="True" %>.
ws.HelloWorldAsync();
My problem: the web page request is waiting for the web service response.
How to solve this problem? How to avoid any resource leak when the web service is down or when there is an overload?
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Dec 21, 2010
I am using a third party service for location time(zonal).If I pass latitude and longitude of the location with service URL it returns the time of that location in XML format.But the problem is some of the time this service gets too much slow so because of that my home page gets stuck because its a synchronous call of that service.here my code-
string TimeZoneUrl = "http://ws.geonames.org/timezone?";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(TimeZoneUrl + "lat=" + latitude + "&lng=" + longitude);
XmlElement root = xmlDoc.DocumentElement;
XmlNodeList nodes = root.SelectNodes("//*");
How can I make this a asynchronous call?
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Sep 20, 2010
I have MVC application (applies to non MVC as well) where a user is posting in data. I need to take this data, send it off to two seperate end points (one using a WebRequest form POST and one using a Web Service), parse the result, and send the result back to the original user.
The issue at hand is that both end points take about 20-30 seconds to respond (response is a string) which means that I should probably execute these two calls asynchronously. At the same time I want to wait to respond to the original user until I get both results back. I am guessing I might have to use some sort of object lock so the response does not get sent back before the two calls are complete?
Based on the responses I decided to go with async controllers since I am already working with a MVC application.
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Feb 12, 2010
suppose i have one button and i want that when user click this button and then a method will be called asynchronously.how to do it in asp.net 2.0. please help me with sample code.
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Oct 4, 2010
I want to ask that what happens when I make a database request (using Linq-To-Sql). Active thread is blocked and waits for response, or it is used to process other requests?
Do frameworks like Linq-To-Sql or Linq-To-Entities handle this?
If I use Sleep() method on thread, is that thread blocked or is it used to process other requests?
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Mar 29, 2011
i have a web service to send emails and i am calling the web service in clr based store procudere and that store procedure is inovked by trigger.
when the trigger is inovoked Web service timout exception occurred.
i have read on the following thread that calling web service async would resolve my problem
[URL]
but i dont know how to call web service method async in clr based store procedure.
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Sep 15, 2010
I have a web service that has a CreateReport method that generates a report based on the specified criteria.
When I call this method Synchronously using a Windows Application or Console Application, the call works fine and the report is created.
When I call this method ASynchronously (CreateReportASync) using Windows Application the report is created.
When I call this method ASynchronously (CreateReportASync) using Console Application the web service does not even get the call.
I am using VS2005 and .Net Framework 2.0. So the proxy is automatically created with the Async methods. I am not really interested the result of the method call, so I do not add a Callback Delegate.
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Oct 8, 2010
I am trying to update client side controls asynchronously with information from a service.
The service I am using has a callback delegate that points to the users web page (server side)
I would like to update information on the page that is initiated by another users also consuming the same service. exactly like a chatroom.
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Mar 29, 2010
How to call Synchronous service call for combo boxes? As I know Synchronous calls do not create a good user experience because the application is hung waiting for the Web service call to return. Then it is my requirement.
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Nov 16, 2010
I have a web form that submits user data to a database, then submits the same data to a web service via a method that is only available as synchronous. It can take a while to run, and there's no reason for a user to wait for it (it's already in the database). I'm wondering about possible solutions. One approach I though of would be to add the request to MSMQ and create a windows service to listen for new messages, then call the web service. I'm wondering if it's also possible to use global.asx or an httpModule, since they opperate at the application level (not too familiar with either one though).
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May 18, 2010
whether its possible to call an web service on a private corporate network from a web service located in a dmz?
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Aug 4, 2010
i have created a normal web service and i want to host it outside IIS. one idea i got is to use window service as hosting environment. i have created a web service and hosted it window service and its window service is running now.would anybody please let me know that how can i call web service hosted in window service binded over soap.tcp. here is my sample code.
[Code]....
[Code]....
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Feb 8, 2010
I need to call a Rest service but would like to do so without having to redirect. Here is my dilemma. The Rest service we are trying to integrate offers the option to sign up for a subscription but does not allow us to upgrade an existing subscription. So if a user wants to upgrade an existing subscription we have to first cancel and then have the user sign up for a brand new subscription. I don't know how I can make this so it flows nicely in my code. I ideally I would like to do something like this
User decides to upgrade
Click upgrade button
Existing account is being cancelled, if cancellation was successful
New account is being created
How can I do this with a Rest service? Here is a sample URI/URL
https://someservice.com?
Action=CancelSubscriptionAndRefund
&AWSAccessKeyId=AKIAIIFXJCFIHITREP4Q
&CallerReference=CallerReference07
&CancelReason=MyWish
&RefundAmount.CurrencyCode=USD
&RefundAmount.Value=1
&SignatureMethod=HmacSHA256
&SignatureVersion=2
&Signature=1uFUSSFvau1zadnSzKRS5ZchuLMn9p5M3ifaHGHie7M%3D
&SubscriptionId=17d62772-c53e-4bdb-9667-65d7b7841cfc
&Timestamp=2009-10-06T08%3A05%3A13.296Z
&Version=2008-09-
Could anybody give me some ideas how to make this work in an elegant manner. We thought we could keep the old subscription and then just sign the user up for a new subscription for the difference of the money. For example the first subscription would be 2.95 and the second one would be 2.00 which would amount to a subscription of 4.95. I think it is not elegant and the user would see 2 charges on the credit card, weird, I think. Since I don't know much about Rest maybe there is a way that this can be solved.
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Feb 11, 2010
What does the using statement do? Is it actually needed?
using (MyWebservice x = new MyWebservice())
{
//random code
}
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Jan 12, 2011
I need to download a file from a website to my specified folder and use in my asp.net application.The file is update everyday and i need to pull the latest file.
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Oct 18, 2010
I was wondering why you would still use ASP over Silverlight, since with silverlight there is a lot you can do already. And you dont have to use css, jquery, js, html, etc.
Also with silverlight you can do a call to the database via ria service.
I can only think of 1 reason which is, that not every one has the plugin installed. But thats just a matter of time.
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Dec 14, 2010
I got .wsdl file from my client. by using this webservice i need validate customer information. So how to achieve this one .if customer is there or not
xml :
<xs:element name="FetchClubMembershipRequest">
<xs:annotation>
<xs:documentation>Request to fetch customers' membership information.</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element minOccurs="1" maxOccurs="1" name="Customer_ID" type="xs:string" />
<xs:element minOccurs="1" maxOccurs="1" name="Customer_Code" type="xs:string" />
<xs:element minOccurs="1" maxOccurs="1" name="Last_Name" type="xs:string" />
<xs:element minOccurs="1" maxOccurs="1" name="First_Name" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:element>
this is from wsdl.file
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Jun 17, 2010
I have an asp.net MVC2 application that needs to call a web service from the controller. How do I do this? It is a RESTful service that returns Json data.
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Oct 4, 2010
I am expecting results from a jsonp web service call. The expected result is, for example "This is a test".
The result returned is correct when I checked at debug mode.
However the actual result taken from fiddler is "This is );jsonp1286206213419( a test"
Why is a ");jsonp1286206213419(" inserted into the result? How do I troubleshoot this?
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May 11, 2010
I built a web-application which calls a web-service twice in the application's log-in page - first, on Page_Load, and the second time is after a button click. When debugging, everything goes well, but after publishing the web-application and trying it - I cannot make the two calls for the web-service (each call is invoking a different function in the same web-service).
If I call it once (say, in the Page_Load) its OK, but once I get to the button click event, the page just seems to be loading but actually doing nothing (loading to infinity).
When I disabled the web-service call in Page_Load, the web-service call after the button click worked well, and if I switched between them (disabled the call in button click and enabled the call in Page_Load) the enabled one worked OK.
How come this is happening? What did I do wrong? Could it be related to the fact that the location where I published my web-application has some URL-rewriting rules?
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Jan 6, 2010
How to Call A ASPNET web Service from javascript?
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Apr 3, 2010
I have a C# library. From within it, I want to call a static method that exists within the same library but through Javascript. Can I use WebResource to call a C# method?
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Nov 5, 2010
As the title states, I'm trying to call a web service written in ASP.Net (Same solution, but different project in visual studio) from javascript. Since I added the web reference for the service prior to this for calling it in VB.Net, I tried to use this reference by directly calling it.In the body of the Default.aspx page, I have this code:
<asp:ScriptManager id="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/App_WebReferences/localhost/ServiceName.discomap" InlineScript="true" />
</Services>
</asp:ScriptManager>
but in javascript, I can't call my service at all. Could anyone explain me how? I'd want to do something like this:
<script type="text/javascript">
alert(ServiceName.HelloWorld())
</script>
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Apr 26, 2010
I'm going on my 3rd day trying to get my Ajax AutoComplete textbox to call my web method. Based on my google searches, I'm not alone. I suspect the problem has something to do with the ServicePath property on the extender, although I'm not sure. My web service is at the same level, on the same server as my test web page. I'm not sure exactly what should go into the ServicePath property, although I think I've tried every possibility. Below is my web service followed by my script.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Configuration;
using System.Web;
using System.Web.Services;
using System.Data;
using System.Data.SqlClient;
using System.Data.Common;
using AjaxControlToolkit;
using System.Text;
using System.Xml;
using System.Xml.XPath;
using System.IO;
using System.Collections.Specialized;
using System.Web.Services.Protocols;
[WebService(Namespace = [URL])]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class Service : System.Web.Services.WebService
{
public Service()
{
}
[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public string[] AutoCompleteNames(string prefixText, int count)
{
System.Data.SqlClient.SqlConnection cxn = new System.Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings["HumanResourcesConnectionString"].ConnectionString);
cxn.Open();.....................
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Apr 8, 2010
I have a web page (.aspx) that calls a third party web service to get some data. It usually takes couple of seconds to get the response back, and then the rest of the page will load. Occasionally the call gets stuck either due to the web service is down, or internet connection, etc., the page just hang there and will not load.
My questions is:
1) Is there a way to abort/cancel the web service call after a set amount of time?
2) Is it even possible to verify the status of the web service before calling it?
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