C# - SocketException When Consuming Web Service?
Nov 23, 2009
I have a webservice being consumed in the WinForm application. I generated a web service wrapper and invoked a web service method asynchronously. I get following exception in my result completed event handler (the event is raised from within the web service wrapper class).
System.Reflection.TargetInvocationException: An exception occurred during the operation, making the result invalid. Check InnerException for exception details.
---> System.Net.WebException: Unable to connect to the remote server
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Jun 14, 2012
I have just started to check WCF services so have created a sample WCF service application with two methods IService
[ServiceContract]
public interface IService1
{
[Code]....
But when am trying to execute the button click am getting the TimeOut Exception.
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Dec 13, 2010
We have a web app that contains web methods. I want to invoke one of those methods from a console app. I am new at this but I wrote a console app, added a service reference and tried to code invoking it. If my web method is called "Transmit", I expected to see Transmit in the namespace I specified but instead I see "TransmitRequest", "TranmsitRequestBody", "TransmitResponse" and "TransmitResponseBody".What are these things?Have I done something wrong?How do I invoke the web method in the web app from the console app?
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Aug 26, 2011
I have a WCF Service (with installer) that I have built and installed in Windows Services. Opened up Admin Tools, Services, and started the service without a problem. So now I'm beginning a new project (a simple Windows forms app). I want to consume my new WCF, but have no idea how. I can't seem to add a reference / add a service reference to it.
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Dec 6, 2011
I need to call a web service from .Net and the web service is authenticted through Base64 authentication.I tried with Web service proxy and it is failed.
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Sep 23, 2009
I have an interesting issue that a client reported It turns out that the desktop application they are using is changing the times returned by the web service to their local time so it looks like the data is off. We're in UTC-5 while they're in UTC-8 so 8:00 AM is returned to the GUI as 5:00 AM which is causing confusion. I've done this riddiculousness to get around it for now:
Code:
Dim intOffset As Integer = TimeZone.CurrentTimeZone.GetUtcOffset(DateTime.Now).Hours
'Substract 1 if we're in daylight savings mode
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Feb 25, 2012
Wrote a 'webservice' with Netbeans wizard, runs on glassfish. I added a reference using the wsdl to my .NET client, VB if it makes any difference.The issue is a SoapHeaderException.
System.Web.Services.Protocols.SoapHeaderException: com/mysql/jdbc/Connection
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(
SoapClientMessage message, WebResponse response, Stream responseStream,
Boolean asyncCall)
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I've tried writing the string in a soap envelope, but still receive the same message. So passing a string is kaputt, as it should be; why would the WS know to parse a string, and simply instantiating and calling the method from the object as if it were local isn't working the way I think it does.
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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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Feb 3, 2012
I am trying to populate a combo list box with the results of a web service. The web service returns a dataset with two columns. I want to display column one to the user and capture column two with the user selection of an item from the combox.right now I can display the first column and capture the selection.Not sure how to add the connection of column two, to the combo box and capture the selection
Code so far....
myDataSet1 = proxy3.listSuppLang()
Dim x As Integer
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Mar 22, 2012
I am creating an XML web service that passes an array of custom types. In my consuming code I am referencing the code as a web reference which I have given the namespace MYWS. Now in code I am trying to assign the results of my web service call to an array of my type like so..[code]When I do this the complier complains, saying: "Value of 1 dimensional array of my.namespace.MyClass cannot be converted to 1 dimensional array of my. namespace. MYWS.MyClass because my.namespace.MYSW.MyClass is not derived from my.namespace.MyClass"Now I understand the message, the thing is they are the same class. The class is declared in my calling code by the web service references a dll from that project. How do I tell the compiler that these are the same type?
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Jul 22, 2010
code in Visual Studio 2010 how to consume a Apache-AXIS web service with a username and password .
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Mar 23, 2012
I'm currently working on a VB. Net web service calling another web service running in the mainframe. I was provided with the WSDL file and I generated a proxy class using wsdl.exe. Upon attempting to invoke the method of the mainframe web service using the proxy class, I encountered an exception saying "Conversion from SOAP failed" coming from a line of code in the generated proxy class.
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Mar 21, 2012
I am creating a simple XML web service and have run into something I can't quite explain.My web service class has the following structure :
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.ComponentModel
[code]....
Invoking my method using the built in VS web service test harness works fine. I created another project, in another solution, to test consuming the web service. I added a web reference to my project and set it so I could reference my web service by using "localWS". Then in the page load event of my consuming class I tried to instantiate an object of my web service:
Dim srv As New localWS.MyWS
But there was no "MyWS" type found. There is however a localWS.MyWSSoapClient class. When I use it I can invoke my web methods. My question is, why can't I create a straight up version of MyWS class? In the tutorials I'v read, and in the book I have, example consuming classes for .NET XML web services can instantiate objects of the web service class they are consuming. As a further test I added a new web form to my web service project and from there I was able to instantiate a MyWS class.
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Jul 9, 2008
I have a user that is getting a SocketException immediately upon app startup. The really strange thing is that my app does not uses sockets at all.This is the only information that I am getting from {smartassembly}, which I use for obfuscation.
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Oct 22, 2009
I have written an async UDP client to talk to a server at my company. When I run on my developer machine all is well. When I deploy to another machine I get a socket exception on EndReceive the first time I send data over the socket. My dev box is Win7 and I have deployed to both an XP SP3 machine and a Server 2003 R2 machine. Below is the receive code:
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Jul 14, 2011
i have a Windows service that is hosting a WCF service through net.tcp and this is working great. I have also created a WCF service application. I am trying to add the net.tcp service reference to the service application. Then I add it to the GAC that goes ok but if I try to RegAsm the WCF service application to allow it to be called from Server.CreateObject I get the error:
Warning: Type library exporter encountered a type that derives from a
generic class and is not marked as
[ClassInterface(ClassInterfaceType.None)]. Class interfaces cannot be
exposed for such types. Consider marking the type with
[ClassInterface(ClassInterfaceType.None)] and exposing an explicit
interface as the default interface to COM using the
ComDefaultInterface attribute.
It does not work. I have tried to call it through a class library but this does not work either as the end point is not set correctly.
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Feb 19, 2010
I am testing web services in .NET for the first time. I am almost there, but I can't seem to consume the web service. I know this post is similar to about 5-6 other posts on this site, but I have reviewed them, and still can't get the syntax correct.So far, I have:Create a simple web service that creates a directoryWorked in development environment, but took some trouble shooting to get to work on live server I can pull up the "automagically" generated .NET we service page.Added web service reference - can now see the reference in my solution explorer and in intellisense.
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Jun 25, 2012
How do I consume my WordPress blog's RSS feed to display my latest blog posts on my homepage? I ran into the following piece of code to do this:
Function GetRSSFeed(strURL as String) as DataTable
'Get the XML data
Dim reader as XmlTextReader = New XmlTextReader(strURL)
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But it errors out at this line: 'ds.ReadXml(reader)' with the following error:
A column named 'comments' already belongs to this DataTable.
Perhaps it doesn't work since this code is from 2003? Does anyone have a working code sample?
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Mar 2, 2011
I have written below console application in VB.net. My intention is to write an application that triggers every one minute and perform some task. But when I run this application it is consuming 50% of CPU.
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Jun 29, 2011
I have two ASMX web services consumed from javascript. The first service performs a long operation and updates a database table on its progress. The second service polls that same database table in order to report the progress to the end user via a progress bar.
My problem is that the long process seems to be blocking the polling service. When I log the activity of the javascript, it seems to be requesting the long service correctly, and then starts to request the polling service once a second asynchronously (note: the long process is asynch as well). Both request types either use setInterval or setTimeout which shouldn't halt the browser. Yet when I look at the activity of the javascript, none of the responses from the polling requests return until the long process completes. So it seems the long process is blocking the polling requests until it's done.
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Mar 30, 2011
We have a VB6 application that consumes Java webservices with soap.That works fine on XP and Win7. The login to the webservice times out.Under xp the client try to reconnect 2 times (is one call to the webservices) and then ask for new login data from user. With win7 that dont be OK.If the login is timed out, the client try to reconnect 9 times with one call. The code is the same. I trace this with wireshark.
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Mar 15, 2011
I have a windows form application and also a exe application that both uses the same dll whic I place in the bin directory The dll is using crystal report and thus I need to reference com objects and other .net drivers. My question is following: Where should I put these references, in the class library (dll) or in the windows form / exe applications. If I put them in the dll, will they automatically be loaded when call the dll (entry point) or do I need to something else (create in installer etc)
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Feb 3, 2010
I have a VB2008 application which can control a windows service i.e. start, stop, pause etc. This runs ok on a Windows XP machine but not on a Win 7 machine (message is - Service error cannot open <service name> service on computer '.') ( if I stop the UAC then it runs ok ). It seems to be a rights issue,
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Aug 3, 2011
I attempt to serialize an object, and it throws an exception as shown below. I assume it attempts to serialize also the UserControl that subsribes to an event of the class I try to serialize. This is not desired. So how do I avoid serializing events?
SerializationException occured:Type 'System.Windows.Forms.UserControl' in Assembly'System.Windows.Forms, Version=2.0.0.0, Culture=neutral,PublicKeyToken=b77a5c561934e089' is not marked as serializable.
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Dec 26, 2011
EDIT:I edited the question to show the code I have come up with. It does not work... No "test" caption becomes visible on the main form.
Private _dispatcher As Dispatcher
Delegate Sub SetLabelText(caption As String)
Private _setLabelText As SetLabelText
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Aug 3, 2010
My wife wants me to create a cookbook application for her. I am going to use this as a learning experience (Otherwise, I would just buy her one).
The main requirements are that she can store her recipes thier ingredients and the steps involved in this SQL server driven program. She also wants to be able to view and print any recipe she chooses.
My question is how do I display the recipe in its complete form? I do not know how to use crystal reports, and automating Word is too time/resource consuming. So what are my options in VB 2008?
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Feb 24, 2009
We have a small VB.net application that basically pulls information from our dBase and then exports this information to an .xls file. From this .xls file, in house agents then manually update a third party listing service (which maintains our current inventory) with the information contained within. The information is very basic, consisting of, for ease of discussion, a 'Part Number', a 'Description' and a 'Quantity On Hand.'
Normally we update this information once a week, but, a newly revised contract with this listing service now requires a daily update to maintain our 'platinum' vendor status.The problem is that it can take quite some time to manually update this information. an automated process is in dire need. And I have finished most of the ground-work and coding - up to a point. Hence the question, and hence where I get stuck.The listing service has provided us with the following WSDL's: One for Increasing our Inventory, one for Decreasing our inventory, one for Adding inventory and one for Removing Inventory.
Up to this point, I have re-programmed a Stored Procedure that was generating the exported information. this SP now does some internal math to figure out if a transaction result occurring on 'yesterday' was an 'Increase', a 'Decrease', an 'Add' or a 'Remove.' These results are then added to a result table under a newly created column named 'SERVICE.' This new information is then pulled from the dBase with vb.net and imported into a Data Table for analysis.
With this Data Table, I can now loop through each row, looking in the column 'SERVICE' and depending on the information contained in that cell, call the appropriate web service.
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I realize that this has become quite long winded, mostly because on any given day I have 25 FF tabs open and none of them agreeing with each other. To add another wrinkle; the WSDL's in question use a lot of complex types within complex types with, you guessed it, other complex types entwined.
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Jan 3, 2011
I would like to create a program that could; open a website, log on to my account, scan a page for links, and open those links. The ultimate goal would be to reduce time spent checking things like e-mail or MySpace.
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Mar 15, 2010
I got this warning that I don't know what it means.Warning1 The service System.ComponentModel.Design.IInheritanceService already exists in the service container.Parameter name: serviceType00
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Jul 23, 2009
I am trying to communicate with a Windows service on a remote machine on the network but i keep getting an exception saying the following: "System.InvalidOperationException: Cannot open Service Control Manager on computer 'machine001'. This operation might require other priviledges. ---> System.ComponentModel.Win32Exception: Access is denied.
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