.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
david stephan
Gaurav Pal
Post New Web Links

WF and WCF communication

Posted By:      Posted Date: September 13, 2010    Points: 0   Category :Windows Application
Hi I am using a SendAndReceiveReply component, to make a call to a custom WCF and get a result back. My OutArgument seems that it is never set in the ReceiveReplyForSend. The WCF Operation returns a boolean with a true value, but the WF once completed outputs a False value for the OutArgument. Please help.        

View Complete Post

More Related Resource Links

WCF Tutorial - Basic Interprocess Communication

What the heck is WCF? For a long time, I couldn't tell you exactly what it was. And honestly, I still don't think I can. WCF is such a broad concept that it's hard to boil down into a concise explanation. When I finally started reading about it, and getting beyond the concepts, things started to clear up. That's what today's tutorial is about - cutting through all the concepts and just use WCF to build a basic server and a basic client.

Getting Started with Windows Communication Foundation

Windows Communication Foundation (WCF) provides a unified framework for rapidly building service-oriented applications that makes it easy to build and consume secure, reliable, and transacted Web services. It unifies the capabilities in ASMX, WSE, Remoting, COM+, and MSMQ; therefore developers need to learn only one programming model.

Serial Communication with the .NET Compact Framework

Learn how to make your applications communicate over a serial port and how to handle common issues when implementing serial solutions. After a general discussion about serial communication and a common serial communication standard, this article demonstrates a practical use of the technologies through sample source code written in C#.

Serial Port Communication Read and Write using C#.net

In this simple article you will learn that how you can Open and read COM port data using System.IO.Ports Namespace.
Simply just create New Project of windows application in C#.

Import ServiceProcess APIs
using System.IO.Ports

Imports System.IO.Ports

Write Parsing functions which parse port data according to attached device

Event ID 1011 - DefaultAppPool World Wid Web Pub. Serv. fatal communication error

We have a Windows 2003 server running IIS6 1.1 Framework. We have also installed a DNS and Active Directory in the same machine.

We're randomly getting the error you can see below. Sometimes it causes the recycling of process w3wp.exe (which on my understanding represents the application pool worker processd) and other times results on this process hanging and not responding to any request. To do iisrest temporarly solves the problem.

We were pointed to a possible permissions problem between the user we were runnig the DefaultAppPool with and registry entries used by the iis. We noticed the default predifined user we used, Network Service, wasn't found in the Active Directory, so we changed it by the default configurable user, IWAM_MACHINE_NAME, which is under the IIS_WPG Active Directory Grupo, which, in theory has the correct permissions to run the application pool.

Well, none of this worked and we are still getting this error.

This is driving us crazy and think the problem might have to do with having the Domain Controller/Active Directory and the IIS6 running on the same machine. We'll try now uninstalling this DC pointing to another one to see what happens.

Any help would be appreciated.

Thanks in advance,


Event Type: Warning

GPRS Communication using GSM Mobile


Dear all, 

I am working on a project which involves send messages through GPRS modem to a specified server port(having static IP).

I need .net code to send data through GPRS modem to server's specified port. If anyone having experience in this area please guide me.



Robotics: Writing and Testing VPL Services for Serial Communication


VPL, part of Robotics Developer Studio is intended for novice programmers, but is also useful for testing and prototyping. We write a simple serial port service that allows you to send and receive data.

Trevor Taylor

MSDN Magazine February 2010

Foundations: Workflow Services for Local Communication


This month's column describes how to use WCF for communication between a workflow and a host application in Windows Workflow Foundation 3. This knowledge should help developers with their efforts using WF3 and prepare them for WF4, where WCF is the only abstraction over queues (referred to as "bookmarks" in WF4) that ships with the framework.

Matthew Milner

MSDN Magazine November 2009

Contract-First Web Services: Schema-based Development with Windows Communication Foundation


Schema- first contract-first modeling of Web Services gives you the ability to model your contracts with an XML-centric mindset. This process keeps you focused on universally acceptable types and the hierarchical data structures that can be represented in XML.

Christian Weyer, Buddhike de Silva

MSDN Magazine October 2009

Peer To Peer: Harness The Power Of P2P Communication In Windows Vista And WCF


P2P applications face a number of barriers preventing their wide adoption as a productivity solution. Fortunately Windows Vista improves the situation, as you'll learn here.

Justin Smith

MSDN Magazine October 2006

Service Station: Serialization in Windows Communication Foundation


Windows Communication Foundation supports several serialization mechanisms and provides a simple, interoperable foundation for future service-oriented applications. Here Aaron Skonnard explains it all.

Aaron Skonnard

MSDN Magazine August 2006

Security Briefs: Security in Windows Communication Foundation


Windows Communication Foundation provides three major protections- confidentiality, integrity, and authentication. This month Keith Brown explains what they can do for you.

Keith Brown

MSDN Magazine August 2006

Distributed .NET: Learn The ABCs Of Programming Windows Communication Foundation


Windows Communication Foundation unifies the existing suite of .NET distributed technologies into a single programming model to improve the developer experience. This article introduces WCF so you'll be prepared to take advantage of all the new capabilities.

Aaron Skonnard

MSDN Magazine February 2006

WinInet: Enable HTTP Communication in Windows-Based Client Applications


The Internet provides the infrastructure for applications to communicate, and that can include non-UI communication between Win32-based applications. If you think beyond the standard browser usage of HTTP, you can use this protocol to retrieve information from Win32-based applications and save it to a Web server. After explaining how HTTP can be used in this way, this article shows how to use Microsoft SQL Server, ASP, IIS, WinInet, and Visual Basic to implement two examples. The first reports usage data-how often an application is used and by whom. The second monitors application errors and reports error details for use by helpdesk staff or engineers in the debugging process.

Todd Meister

MSDN Magazine June 2001

Comport communication using System.IO.Ports

I am using System.IO.Ports to communicate the with the printer(Com RS 232). What i want to know is how can i determine weather the Printer is Power on or not.. (i mean Printer is power cable is plugged in and Power on) and also When to use HandShake.XON/XOFF 

System.Transactions.TransactionManagerCommunicationException: Communication with the underlying tran

Hi there,I have an urgent issue at production.I hit the above mentioned exception when my application execute the line of System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table)I also see this message from web server event viewer: MSDTC encountered an error (HR=0x80004005) while attempting to establish a secure connection with system <SQL Server macchine name>.I have configure the MSDTC servive as below at both web server and sql server:- Enable Network DTC Access- Allow Inbound- Allow Outbound- Select Mutual Authentication RequiredFirewall service is not running at both servers.One thing very interesting, I have exactly the same setting for development environment, it works perfectly at development environment, but not production.Please help!Thank you very much.Regards,Fenny

How to setup windows server 2008 to enable socket communication?

I wrote a simple socket program, which listens to the 82 port, then receives and sends data through it. I tested the program on my local machine and it works fine, but after I published the program onto my windows server 2008, it does not work anymore. I guess it should be the firewall causing the problem, so I added rules to allow 82 port for both in and out bound, and I also add my application to the allowed program list for passing firewall, but still doesn't work, how could I solve it?   The windows server 2008 machine has a public network IP address, while my workstation is in a local network without public IP address, I connect to server 2008 through a router which has a public IP address. Is that the problem?   thanks! Regards! directfriends.net
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend