.net - Service Reference Client Bug?
Aug 16, 2011
i have a WPF application that uses a service reference to a web service.Now i have a GUI component that tracks the progress of this...But i seem to have some sort of bug here, it only occurs on some machines and not often..I start a call with MethodNameAsync and display the progress bar until the matching Completed event occurs.
some times i call 3 different async methods in a row but only the two of them get their Completed event raised so the GUI will be locked and the application has to be restarted.After being totally frustrated a few weeks i found the event AppDomain.CurrentDomain.FirstChanceException, so i hooked up to it and started logging all FirstChanceExceptions..
[Code]...
Fix this temporary by not using async methods and instead using a thread that will call them one by one.. now this is not a elegant solution, i should be able to use the async methods...
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Sep 27, 2010
I had a problem getting a VB.NET web service client to receive the response object from a Java web service.In the process of posting this question someone from another department volunteered some code written for a similar situation.I couldn't find this anywhere on the net so I'm completing my question to help others out.[code]The web service is Apache CXF with some Spring elements mixed in.
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May 26, 2011
I'm using Visual Studio 2010 and .NET3.5. I've created a WCF service application. I'm including two DLLs that contain the types I'm returning. The first method I wrote works both in WCF Test Client and also in a console application I created to test. When I move on to the next method that returns a generic list of a type. It works great in WCF Test Client, but when I update the service reference it acts as if the service is unavailable. All my objects say can't find reference, and I can no longer see it in the object browser. It's like it just disappears. I can still see it in the Service Reference folder. If I go back to the WCF app and comment out the contract and implementation of that one method it work again. I created a local class very similar to the class I'm using from the dll, and the it works. Is there something I'm missing here? Can someone point me in the right direction?
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Jun 13, 2012
I have some clients calling my asmx service and I figure out to change my asmx to a Wcf service.How can my asmx clients call to my Wcf service without modify the client application?Maybe just a few changes in the config file...I can't expect than they compile their applications.
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May 26, 2011
Here's the situation. I'm a Java developer. Another developer in our company wrote a web service for our clients. They wrote the service in Java. They also wrote a demo for creating a client to consume the web service in Java and it works just fine. I've been tasked with creating a web services client in VB.NET to do the same thing. It hasn't been going smoothly. The problem is that the web service requires that you send the username and password in the SOAP header and I can't figure out how to do that in Vb.NET. I looked at the following pages:
[Code]...
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Oct 25, 2011
I have a solution in VS 2010: a WCF Service Library project ("NotifyService") and two Windows Forms projects, one for a server ("NotifyServer")and one for a client ("NotifyClient"). My goal is to have a duplex WCF service that will notify any number of connected clients when the server pushes out a notification. The clients do not need to communicate to the server except to subscribe and unsubscribe from the server's updates. However I seem to be running into problems nailing down the InstanceContext.
Here's the code for the WCF service:
<ServiceContract(
CallbackContract:=GetType(INotifyCallback),
SessionMode:=SessionMode.Required)>
[Code].....
Since I'm setting everything up through code, there are no app.config files. The problem I'm having is that my Subscribe method is never called. When debugging, I get an error after stepping through that line (not an exception) that says "Unable to automatically step into the server. The debugger failed to stop in the server process." When I go back to my server form and click the button designed to raise an event on the callback clients, it steps into the NotifyService class but the _callbacks list is empty, meaning the Subscribe method either never ran, or it never ran on that instance.
I have fought with this for almost a week. This is nearly an identical copy, at least on the service-side, to what was described here, and I've compiled that and it works.
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May 6, 2011
I tried this one...but its not working.[code]...
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Feb 8, 2006
I have written a VB.NET windows service application. I installed it in my system using the Installutil.exe. But this is not available in the client's system because the .NET is not installed in that system.Is there any way to install the .NET windows service application without the Installutil ?
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Jun 24, 2011
Would I need it in order for my VB.NET 2.0 client service to perform those actions? Is the Azure SDK only for web development?
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Jan 22, 2012
I'm trying to build a multithreaded SMPP client with VS2008 and I'm getting bogged down in threading. Basically my main parent thread will interact with the windows service scheduler, get registry settings, and get a list of SMPP servers to connect to. Then it will launch a thread for each SMPP connection, which will need to keep it's TCP socket open to receive messages with, so the thread must remain running even if there aren't any events happening (no messages to receive)... but I can't seem to get it figured out.
[Code]...
The Start sub in the oChannel object does run, but once that sub is finished running the thread ends. In the Start sub, it calls other code that initiates a connection to the remote SMPP server, but that code asynchronously waits for an event to be raised regarding the connection status. Once the sub finishes, the async connection being attempted doesn't seem to be able to pin the thread down.
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Mar 23, 2012
I'm building a web service client using vb .net. The web service is secured with ssl, basic authentication and also requires client certificates. So I created a web reference in Visual Studio and provided the credentials:
Dim cred As New System.Net.NetworkCredential("usr", "passwd")
Dim proxy As New SimpleFromLocal.simple
proxy.Credentials = cred
Console.WriteLine(proxy.helloWorld())
This works as expected, as long as I turn off mutual authentication on the server side.I added a client certificate like this:
Dim cert As X509Certificate = X509Certificate.CreateFromCertFile(certFile)proxy.ClientCertificates.Add(cert)
The certificate is loaded, but the web service call fails. I could post the exception, but it is in german, which is an issue on its own. It basically says: Authentication failed, because the remote site closed the connection.I tried debugging the ssl handshake on the server side and it looks like the client certificate is not transmitted.So what am I missing here? Is it required to install the client certificate on the local machine?Edit: The error thrown:
[Code]...
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Sep 16, 2010
I am implementing a VB.NET desktop application which consumes a web service.
The web service implemented in Java and I currently using Tomcat on my localhost to host the web service.
The web service requires secure communication with the client and so I have followed instructions that outlined how to use Java's keytool.exe to create two .jks keystores (one for the client and one for the server) and then create two .cer certificates (one for the client and one for the server)
I have placed the keystores and certificates generate into the directory where the web service is expecting them (according to the instructions)
I have installed the certificates into TrustedPeople and have attempted to use the certificate by setting the ClientCredentials.ClientCertificates property like this:
myServiceProxy.ClientCredentials.ClientCertificate.SetCertificate(storeLocation.CurrentUser, StoreName.TrustedPeople, X509FindType.FindByIssuerName, "name")
I keep getting the following error message when I try to call any method:
An error was discovered processing the <wsse:Security> header
My problem is that I don't know how to use this in the VB.NET client application that is consuming the web service. I could be doing this completely wrong.
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May 19, 2011
somebody tell me the way to grab the file path from Multiple clients (Forms) to web service (acts as server) in VB.net?
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Oct 30, 2009
Assume I have a form that has say 5 text boxes and I need to pull some data from a database then set those 5 text boxes with that data.So assume I have 3 basic layers: the code behind for a default.aspx page a BLL class that contacts the DAL and a data access layer (DAL)But I've heard and read that the default.aspx page should not know about sqldatareader, in fact you probably dont want to add the sqlclient namesspace to the default.aspx code behind page. [code] Then the BLL would simply call the DAL to call a stored procedure in SQL Server and do a CommandObject.ExecuteReader, get the results pass it back to BLL and BLL would then send it to the code behind page of default.aspx.I can provide full source code if that doesn't make sense. My question is if its bad that default.aspx actually declares and knows about an SQL Data Reader then what is the better way to do this? What datatype should I be using to avoid having an sqldatareader in my interface code ?
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Dec 10, 2009
While I write some code in VB 2008 Express, I could not see ciodm.dll (Indexing Service)in Reference. This library is just missing!
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Nov 12, 2010
I have added webservice support to an OLD PocketPc 2002 application written in VS2003. I don't have the ability to choose dynamic path as in VS 2005, which is the best way to switch URL from dev, test and prod environment for this application? Should I create some factory class that read a value from the app.config and return a service reference with the correct URI?
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Oct 10, 2011
I want to make a program that will ask the user to enter the service reference URL in the text box then click a button to add the service reference. how to add and remove a service reference?
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Mar 28, 2012
I'm just a starter in silverlight and WCF. I came across a very good article here by Miguel A. Castro which teaches to add the WCF manually. I have the contract service setup and the only thing I left is to get the data back from the service in the silveright. I have a hard time translate the code to vb.net.
BasicHttpBinding basicHttpBinding = new BasicHttpBinding();
EndpointAddress endpointAddress = new EndpointAddress("/Person.svc");
IPersonService personService = new ChannelFactory<IPersonService>(basicHttpBinding, endpointAddress).CreateChannel();
[code]....
How should that be written in vb.net?
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May 13, 2011
I need to query a web service that basic authentication, putting the username and password in the request header. My client is written in VB.NET Visual Basic Express Edition 2010. I've added the web service to the Service References. It has auto-generated the appropriate classes for me. [code]...
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Oct 27, 2010
I need to return an error message to the client, if they have entered invalid data when calling my web service. So if my code is: [code]Is there a way to display a more user friendly error message (such as a message box or just the words "Invalid Order ID")?
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Sep 15, 2010
I've got a service running (well, it doesn't crash), but when I try to add a Service Reference to it, I keep getting:
Metadata contains a reference that cannot be resolved: 'net.tcp://localhost:55555/mex'.
Metadata contains a reference that cannot be resolved: 'net.tcp://localhost:55555/mex'.
If the service is defined in the current solution, try building the solution and adding the service reference again.The pertinent parts of my config file are:
<netTcpBinding>
<binding name="ReliableDuplexBinding" closeTimeout="00:00:10"
openTimeout="00:00:10" receiveTimeout="00:00:30" sendTimeout="00:00:15"
[code]....
The service must be self hosted.
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May 30, 2012
I'm integrating one of our apps with a third-party provider's web service. I've added the service reference, but when I go to dimension a var as one of their types, the types aren't showing up for me in Intellisense. I'm using VB.NET/VS 2008 on Windows 7 and a 2.0 Framework web site running on local IIS. I have imported System.Web and System.Web.Service in my codebehind. I also made sure to check the "Always generate message contracts" checkbox.Types not showing up for service reference
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Jun 14, 2009
I have installed WCF / WPF Extension with Visual studio 2005.
I developed the sample WCF services and to consume it I have developed the client project.
In client project I need to give the service reference, however I noticed here Add service reference option is missing.
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Apr 1, 2010
Today I was build one Windows Service Application which has the reference to 4 Dll. After building the Release I found that there was one more DLL in addition to the reference I have. I checked using ILDASM and it only showed 4 dlls.What could be the issue ? How I can I check why it is getting unwanted DLL's in Release Folder?
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Nov 16, 2010
I'm currently trying to call a WCF service dynamically See here, therefore, I'm trying to understand what happens behind, when I add a service reference by the GUI of Visual Studio... What's generated..? An object is created and an implicit reference is created...
Are the references contained in a specific container, a sort of pool?
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Jan 19, 2012
When I add a service reference to my VB.Net project all of the properties of type DateTime get changed to type Date. The project is ASP.Net using framework 4.0. The web service being referenced is C# framework 4.0. How can I keep this from happening?
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Apr 21, 2010
I am building an application and I am using web services for getting data from a server. It was working fine when I was developing on my XP machine but had to switch to Windows 7. On the new machine I grabbed the latest version of the code using sourcesafe.However, when I try to add a service reference in the solution or update an existing one I get the following error:
There was an error downloading 'http://localhost:52490/Service/CustomerService.asmx'.
The request failed with the error message:Server Error in '/' Application.Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: Could not create type 'Digital_Server.CustomerService'. Source Error
<%@ WebService Language="vb" CodeBehind="CustomerService.asmx.vb" Class="Digital_Server.CustomerService" %>
Source File: /Service/CustomerService.asmxLine: 1
Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927
[Code]...
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Jun 5, 2009
I'm trying to make a LAN IM client using the net send command and I was wondering if there is any way to capture the text of the messages received through net send and display them in a label.
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Sep 4, 2009
I'm attempting to consume a HTTP Basic Auth Secured PHP WebService using VB.NET. I've so far managed to get 100% perfect integration by adding it as a Web Reference and doing the following:
Dim Credentials = New System.Net.NetworkCredential("username", "password")
Dim CredentialCache = New System.Net.CredentialCache()
CredentialCache.Add(New Uri(MyWebService.Url), "Basic", Credentials)
MyWebService.Credentials = CredentialCache
MyWebService.PreAuthenticate = True
I can also successfully add the webservice as a 'Service Reference' and this also works fine, as long as i turn off all HTTP authentication on the SOAP server.
My problem is that I can't find any documented means of sending basic HTTP Auth Credentials when using Service References as opposed to 'Web References'
Am I right in my understanding that 'Web References' are a legacy method of Web Service consumption?
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Apr 23, 2009
how to create a web service reference manually in visual studio. I do not want to use the "add reference" already contained in the ide.
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