Architecture :: Using Synchronous Web Service Method "asynchronously"?
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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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 19, 2010
I am trying to submit my form's data to database using asmx Web Service method(Through AJAX extension methods i.e., Script callback method). My form contains lot of data, though only text data.This will be a very fast process,Or should i submit form data in the traditional way ?
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Mar 30, 2010
I need to run the HttpContext.Current.Server.Execute method in my ASP.NET application. This application has a WCF operation that does some processing. Currently, I am running a Server.Execute call from within my WCF operation and getting the results I would expect. However, I would like to do this asynchronously.This is where my problem comes in. In an error to run Server.Execute asynchronously, I tried running Server.Execute in the DoWork event handler of a BackgroundWorker. Unfortunately, this throws an error that says
"object reference not set to an instance of an object"
The HttpContext element is not null. I checked that. It is some property nested in the HttpContext object that appears to be null. However, I have not been able to identify why this won't work. It happens as soon as I move the processing to the BackgroundWorker thread. My question is, how can I asynchronously execute the Server.Execute method? Are there options beyond BackgroundWorker that will work?
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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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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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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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Aug 6, 2010
My web services have base web service method called IsGood()I want to make sure every methods in my web service call IsGood() in base web service automatically without add code in each web service method, can I do that?
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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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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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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.
I am trying to use an update panel, and call updatepanel.update() (server side) once I recieve the information from the service. basically: how do I partially update control data from the server side so that client side can see it.
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Sep 22, 2010
i want to create a centralised business or Service authendication architecture in .net. for example, we have a clients like c1, c2, c3, c4, ... etc. everybody logins seperatly as well as grouply. ie, if client "C1" logins [with login authentication] he can access c2 , c3, c4 also without login authendication. So its like a google. if we enters gmail account, we can access orkut, picasa like that.. i need the cetralised architecture.
And, client "c1" seperately asks seperately how will be the authendication architecture.
so give me the single solution for both these two scenarios. how will be the architecture for these two and how is the Data Base (Login) Structure.
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Dec 22, 2010
I am going to create the SAAS (Software as a service) Application. Can you please provide all the attributes that we have to consider in SAAS application (for example usability, pluggable architecture etc .. )
How architecture should be build for this project, provide sample architecture for SAAS application. This architecture should be easy to upload and upgrade or degrade the features. Error handling should be easy.
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Aug 10, 2010
I am try to create architecture design for WCF service.
We have WCF service that we have to expose to third party so then can request with xml and get back xml response.
The wcf service should do the following:
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- Check xml against the schema
- Parse the xml
- Authenticate the incoming xml by username and password that will be in xml
- Send back the response
If anybody can let me know what kind of design I can use or is there any pattern available that I can take it and then extend it as per my requirement.
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Feb 25, 2011
I am not sure which approach I should use. I have a web application that needs to get/receive data from a third party application that is in a secure remote network. The data needs to be secure during transport. The data layers cannot be exposed and the databases will not talk to each other. The data will be received from remote application on demand, or will get at scheduled intervals.
I have looked at WCF, but not sure if this will work. Can a WCF service be used to receive data as needed from a remote sender or service? Is this a secure way of doing it? I have also looked at SFTP using some XML/XSLT, but I don't think this is the right way to go. In addition, some data may be transported from my web application to the remote application (mostly reports at first). What protocols are used to transfer data between HIPAA compliant applications?
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Feb 10, 2011
I'm currently trying to work out the best way to build this web application, which will then be intergrated on other systems, such as WinForms, Intranets etc.
We hope to include the usual layers i.e. DAL, BLL, BOL and UI but I have been experimenting with Entity Framework 4 and WCF Data Services and managed to get something in place where I was using WCF as a gateway to EF4.
i.e. Adding a Service Reference to my project and then using the EF4 context and writing LINQ queries against the DB
e.g.[Code]....
Now with the current setup I would still need to write a DAL Class Library, that interacts with the Data Service, because as I said WCF Data Services only seems to be a gateway, I can't see where to put the code (above) in the Data Service and then how I could these methods.
My questions are: 1. How do I develop a WCF Data Service in such a way to allow this behaviour - I know how I could do it using ASMX web service, something like [Code]....
2. If I am to use WCF Data Services, how is serialization handled (if at all) - again I know how to do something in ASMX web services
3. Again, If I am to use WCF, how do I add Security and only allow my applications to access the web service - for obvious reasons
4. Would it be possible / logical to also include the Business Logic Layer into the web service?
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Feb 8, 2010
I want to create a web method that accepts a List of custom objects (passed in via jQuery/JSON). When I run the website locally everything seems to work. jQuery and ASP.NET and everyone is happy. But when I put it on one of our servers it blows up. jQuery gets a 500 error after the ajax request with the response being:
System.InvalidOperationException: EditCustomObjects Web Service method name is not valid.
[WebMethod]
public void EditCustomObjects(int ID, List<CustomObject> CustomObjectList)
[code]...
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Aug 17, 2010
I have built a WCF Service that is being consumed by a Silverlight app. At first I created one method that was very simple:
public String SfTest()
{
return "SF Test";
}
No poblem. My silverlight app references my service and displays "SF Test" in a textbox. Now I add a method to my wcf service like this:
public List<String> GetTest()
{
List<String> list = new List<string>();
String a = "a";
list.Add(a);
String b = "b";
list.Add(b);
return list;
}
I update the reference to the service in my Silverlight app and the using statement in my xaml cs page throws an error like the service doesn't even exist although it is there. I am assuming the problem has to do with datatypes or serialization or something like that but it is driving me up the wall. Why can't I consume a simple generic list in my Silverlight app through the WCF service.
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Jan 11, 2010
language I want make a asp.net application for Send sms.(I have a getway that work webservice for send message ) . I have to solution for send sms. 1- send sms now(When submit send botton).There is no problem in this case 2-Schedule send sms : in this model User set a time that sms send in this time.I need a solution for schedule send.I save this sms in table until The desired time How can handle a method (for example every ten seconds) for check table in database and send sms ?
Note: I have a normal host in web .
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Jan 28, 2011
I have one small problem. I am using Asp.Net web services in my application. In aspx application i have a condition that
for sample,
[code]....
look up my above condition. In the else if condition suppose a is greater than zero i wil call webservices. But what i need that suppose the services are not returned the value within 4 seconds, i will need to go to first condition that is call stored procedure. I hope you understand.
How can we achieve this condition. I thought that we can achieve syncronous. But i dont know exactly about it.
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Feb 11, 2010
I have a contract budget management program where hours to be worked (within various contracts' period-of-performance) are computed. These projected hours are displayedto the employee in a gridview on their timesheet (web program) to be used as a guide for charging hours worked. A new FIO bought well-known accounting software with it's own timesheet function but without the budget function. I'm trying to figure out the best way to present the projected hours on the same web page as the 3rd party timesheet (I don't have control of the latter; it's just a URL). In ASP days I would have built an I-frame. Evidently an earlier version of .Net had <frameset> function but that is obsolete. What is the best way to accomplish my goal?
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Sep 10, 2010
I wanna embed the windows service in the web application. I have seen few posts in the web. where they generate separate exe for the windows service and use it as an installable.
The same process i tried doing it but it threw an OS error in my server which is windows 2000 and didnt supported the executable.
However the website of mine runs fine in the same server. Thus i was thinking if i cd embed the same code in the web application.
Also, in my case the website of mine takes job for simulation. These jobs are taken for simulation execution and nearly takes 12hrs for completion and if they are not completed within twelve hours then they are supplied extra twelve hours to complete the simulation jobs.
The simulation executables are a series of executable and bat files.
The results of the simulation gets updated in the tables of MySql and hence are displayed to the user.
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May 31, 2010
I've a web services wich can invoke a pc on the internet when a new event has come.
How do I write the code?
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Mar 17, 2011
I've never tried this myself, but am attempting to build a proto-type of a discovery service (much like WS-DISCO Services) for a research project I'm currently working on.
Was wondering if anyone had tried it before with WCF/ASP.NET and have any articles/blog posts to share?
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Feb 17, 2010
I need to create a method which looks through a large string of text, and determines which words (apart from words like "a" "and" "the") are the most frequently used. I would like to determine which are the top 3 most frequently used words in a string of text...is this possible?
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