In my asp.net application, I am using wcf service to get all the business logic. I am using that service reference in my application to work with that. Now adding that service reference is giving another option Update service reference is giving Generate asynchronous operations. If I check the option and add the service will it generate asynchronous methods for my existing service. If so how do I use the metohd.
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I need help calling a web service asynchronously. Current scenario is, I have a classic ASP page which does some processing and then redirects to a ASPX page which would call the wcf service asynchronously and then redirect to another classic ASP page. Im currently using the Asynchronous method to call the service with Async="true" included in the header. Testing the ASPX page induvidually it appears that the service call is asynchronous and does not wait for the the service to process data. But when integrating it with classic ASP page i.e ASP to ASPX to ASP it appears that the process takes a while as if the service call is synchronous.
So is there a better idea to use in calling a wcf service asynchronously. The idea behind my work flow is the ASPX page would be used to call the service and then the ASPX page would redirect back to the classic ASP page is came from. Let me know if there is a work around on how to call async wcf service in aspx page. I dont need the ASPX page to wait for a result or anything it is just used to call the WCF service async
I defined two webservices calls in ASP.NET:
1.BeginLengthyProcedure and EndLengthyProcedure (Asynchronous web method)
2.LengthProcedureSync
namespace ServiceDemo
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
[System.Web.Script.Services.ScriptService]
public class AsyncWebService : System.Web.Services.WebService
{
public delegate string LengthyProcedureAsyncStub(int milliseconds);......
I Wrote code to copy Client side DB to Server side by providing the credentials required. I have a simple form, Containing three textboxes and submit button. the textboxes takes UserId,Passwd and Servername of ORACLE(Client Machine's) and when user press submit button. the VB Script method invoked. here the function follows.
Public sub DBConnect()
Dim con,usr,pwd,server
usr= form.User.Value
pwd = form.Passwd.Value
server = form.Connect.Value
Dim strcon
strcon = "Data Source=" + server + "; User ID = " + usr + ";Password=" + pwd + ";"
con.open strcon
dim rs,str
str = "select * from emp"
set rs= con.Execute(str)
if rs is not nothing then
PageMethods.SendForm(rs)
end if
End sub
Here I am getting the record set this record set I have to access in the serverside to copy the values to my datatable. How can I acheive this? How to call Page methods through VB Script. Here is my Page method.........
I have been trying to figure this our for far too long and I cannot get my head around it. Every example I have seen seems to be far more complex that I need.
I have a web service in my project (.asmx). I want to call it very simply from a button on a webpage.
Click
Run service asynchronously
return control back to webpage (web
service running in background)
I have created a table adapter in DAL. I have created a gridview in the page and want to fill the gridview with a table data by calling a method. My table has 11 columns but i want to display only 2 columns of the table. My getSong() method has a query as Select title, category from Muisc. But it diaplyas all columns with no data except title and category and the autoincrement primary key column with negative values. The pic is given below. How can i solve it?
View 2 RepliesI have a fairly simple template that I need to make a method call from. However, NVelocity does not seem to evaluate method parameters that themselves are NVelocity variables. Take the following NVelocity template:
#if (--- CONDITION SNIPPED ---)
<blockquote class="column span-4">
I MADE IT!
</blockquote>
#else
<blockquote class="column span-4">
$extensionMethods.TestMethod(${var1})
</blockquote>
#end
In the above template, $extensionMethods is passed in as an instance of a class and works wonderfully when passing in evaluated numbers (e.g. $extensionMethods.TestMethod(4) works every time). However, using $var1 causes the entire string to be returned as-is: $extensionMethods.TestMethod(${var1}).
Is there a way to pass in a variable to a method lazily to get the above template to evaluate correctly?
In the create aspx page i have 2 buttons. One for creating the new customer and another one for searching the customer based on the customer last name. Now the issue is when i try to search the customer based on the last name the page is calling the create action method only, not the search action method. how to call a spicific action method from the buttons. I know it can be done using ajax post back but what i am looking at is to achive this in the normal post back itself.
View 3 RepliesI have an process that take about 15minutes to execute. And i have toput this process in a service, and managed his statWell, i placed this process in a service and in some specific pointi have one variable telling me how much % the process have done.So my service reference im my consumer project its typed to let asynchronous calls.When i start my process with a
[Code]...
am calling web service method asynchronously using callback method which is long running process.
In mid time in client want to cancel this asynchronous method call then can it be done....??? and if yes then how can it be done..?
We have a custom Ajax checkbox control. In that control we set value (from inside the control) via a web service call (say WSCall1) to the business engine. There is also an event exposed on the OnClick of checkbox for the end user to have their custom code where the end user have their own web service call (say WSCall2). This event that end users will write is handled inside the ajax checkbox control on the "OnSuccess" of the internal web service call (i.e WSCall1) with an expectation that if WSCall1 succeeds, WSCall2 will get executed. This works fine with Firefox and Chrome but not in IE. In IE sometimes WSCall2 gets executed first and then WSCall1 -- actually there is no gurantee which web service gets called first. For WSCall1 we have used " Sys.Net.WebServiceProxy.invoke"
Is there a way we can make sure that WSCall2 gets only executed on the "OnSuccess" of WSCall1? Isn't the OnSuceess supposed to be executed when the WSCall1 thread returns?
I have the following code for consuming a service that is not working for me. what I can do to narrow down whats going wrong?
The address is: http://localhost:57667/ExampleService.svc/
When visiting directly I get the 'You have created a service... message'
The code that goes wrong is here. It causes the following error:
_url = "http://localhost:57667/ExampleService.svc";
TextReader textReader = new StringReader(HttpPostClient.Post(new Uri(_url), bodyData.ToString(), _exampleServiceRequestEncoding, Properties.Settings.Default.HttpPostClientExampleAvailabilityTimeout));
ERROR MESSAGE:When visiting this URL directly: http://localhost:57667/ExampleService.svc/ProcessRequest
The exception message is 'No component for key example.ExternalWebServiceStubs.Example.ExampleService was found'.
Castle.MicroKernel.DefaultKernel.get_Item(String key) at Castle.Facilities.WcfIntegration.WindsorInstanceProvider.GetInstance
I'm trying to invoke an Oracle BPEL web service from asp.net (vb) and having trouble getting it to work. This is the portion of my code in the Page_Prerender event:
[Code]....
The web service doesn't launch though.
I'm not a web service expert, so seeing if anyone else may know how to get this going. I don't need to track the web service - just need to launch it.
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?
Imagine a web service with a method that returns a Customer object, that takes a customer ID as a parameter, i.e.
[WebMethod]
Customer GetCustomer(string customerId)
Now imagine that you're writing an ASP.NET app and you've generated a proxy for the service with the async operations. You create an instance of the service, wire service.GetCustomerCompleted to your handler, OnGetCustomerCompleted, and call service.GetCustomerAsync("12345"). In OnGetCustomerCompleted you apply logic to detect that no customer was found and throw a custom exception, or you want to throw the exception found in e.Error, e.g.:
void OnGetCustomerCompleted(object sender, GetCustomerCompletedEventArgs e)
{
if (e.Error != null)
throw new ApplicationException("GetCustomer failed", e.Error);
if (String.IsNullOrEmpty(e.Result.FirstName) && String.IsNullOrEmpty(e.Result.LastName))
throw new CustomerNotFoundException();
}
(I've omitted the bits of code that sets up a Customer object and persists it through the calls.) You launch the call to GetCustomerAsync in Page_Load and expect to retrieve the result in a handler wired to Page.OnPreRenderComplete. My question is, how do you catch the exception in your page? I know you can catch it with Global.asax's ApplicationError, but what if you don't want to navigate away from your page?
I am building a page with databound list control. For each row I want to display piece of info retrieved from web service call. This could be time demanding so I want to render page first and retrieved additional info asynchronously and in parallel later on. Anyone has some tips how to make it? Just to have a more detailed picture it is a product list in e-shop which I want to render so customers can use it (go to product detail/add goods to shopping cart...) but meantime there will be a placeholder displaying info that informations are retrieving which after completion of call will be replaced by result data.
View 2 RepliesI'm using Asp.net c# language programming. What is the best way for authenticating web methods in a web service? Is it right having authentication for every web method and verify user name and password for each web method? Is there a way to authenticate just once not for every web method? something like using sessions and etc?
View 2 RepliesWhat is the best way for authenticating web methods in a web service? Is it right having authentication for every web method and verify user name and password for each web method? Is there a way to authenticate just once not for every web method? something like using sessions and etc?
View 2 RepliesI 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]
I am calling server side methids from client side using PageMethods. Can those methods return value back to client side. If yes then how and if no then how can that be achieved? refer to my code below.
function getValuesFromPSS(s,e)
{
debugger;
[Code]....
i have added a service reference but i am unable to access the methods, there is a method call "GetContactById" which i can see when i add the service but i am unsure how i can get to this in code. i have tried creating an instance first but i get this error
Error 116 Core.omnetService.OMWCoreSoap' is a 'type', which is not valid in the given context
omnetService.OMWCoreSoap test = omnetService.OMWCoreSoap();
test.GetContactById(strKey, UserId.ToString());
what is the best way to solve this?
I have a web service/wsdl file that requires client authentication to passed through SOAP headers.
There is not property or method available in web service to set the SOAP headers.
how to call the web service method along with SOAP headers in .NET 2.0
I have an ASMX Web Service set up to use the HTTP GET method. Simple methods which take basic String and Int parameters are working ok, and I can call MyService.asmx/MethodName?Param=Value and get a response back in XML.
However, when I have a method which has a nullable Int (i.e. int?), I get this error:
< Method Name > Web Service method name is not valid.
The error message is confusing, as the method does exist, just not in the GET scope. I presume this is because a nullable type is too complex to be passed via the URL, but I can't find any documentation or SO posts on this.
I appreciate that complex types like Lists or custom classes etc will not work using GET, but I would have assumed that a simple nullable int or nullable datetime could be handled natively, simply by detecting whether it was omitted from the URL. Guess it's not that simple!
I did some research after posting. All I found was simple examples for no-layer architectures, like connecting to a database from your aspx page, so, in a corporate environment, it is unnaceptable.
I need to call a server-side method (using ASP.NET Ajax) in a 3-layer architecture.
For example, my Default.aspx contains a method LoadProducts().
[Code]....
[Code]....
This cannot change. There is no way to convert Business and Data layers to static.
How can I call the LoadProducts() method using ASP.NET Ajax?
Is it possible to call usercontrol methods/events using MSAJAX. I wanted to update my usercontrol by calling one of its events when a property from its parent page changes.
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