DotNetKicks.com - published wwf stories

Workflow and Host Communication in WF 4.0-Parameter Passing

Thu, 12 Apr 2012 17:58:33 GMT

Workflow host is an application responsible for executing the workflow and managing different workflow lifecycle events like start, completion, idle, unloaded etc.Now the workflow host should be capable of exchanging information with the workflow. This information exchange can be broadly categorized into: a) The parameters/arguments needed to start the workflow and to get the results back after workflow has executed. b) The intermediate data needs at different stages of a long running workflow (e.g. when the workflow is waiting for a specific input like Manager's Approval). In this post we will concentrate on the different mechanisms of parameter passing and getting results back. In the subsequent posts we will move into more complex scenarios related to long running workflows.

Creating an application like Google Desktop in WPF and C#

Mon, 01 Aug 2011 03:20:26 GMT

An interesting article that explains how to create a program like Google Desktop in WPF. Example code shows programmers how to dock an application to the left or the right and display gadgets similar to Google Desktop.

Windows Azure For Developers Task 5: Configuring Virtual Machine sizes

Tue, 08 Mar 2011 10:27:21 GMT

In this article,we discuss about Windows Azure For Developers Task 5: Configuring Virtual Machine sizes.

Introduction Tips to Workflow 4.0

Fri, 08 Oct 2010 15:45:52 GMT

Introduction Tips and materials to Microsoft Workflow Foundation 4.0

Simple Procedural Workflow using VS 2010 and Windows Workflow 4.0

Wed, 12 Aug 2009 02:00:00 GMT

In this article, we will see how a workflow can be designed using procedural activities, how input arguments can be specified in a workflow and how a hosting application can pass these input arguments. We will be using Beta 1 release of VS2010, .NET 4.0.

Easy embed workflow in your application

Wed, 18 Feb 2009 18:46:16 GMT

Whilst enterprise architectures mostly focus on BizTalk as a standalone server, WF is meant to be a more core-based addition for embedding within application. Embedding is not always as intuitive as it should be, though. To this end, I've created the following self-titled "WorkflowExecutive" helper class. It allows you to easily start any referenced Workflow, pass along parameters to it and handle exceptions.

WPF ICollectionViewExplained

Mon, 24 Nov 2008 19:31:23 GMT

Tips and tricks on ICollectionView for WPF Apps and how it can be used in M-V-VM

Photshop style layer blending in WPF

Wed, 13 Aug 2008 03:31:04 GMT

Pixelshader code for Photshop style layer blending in WPF.

State Machines In Windows Workflow

Thu, 01 May 2008 00:31:03 GMT

Excellent introduction into the usefulness of state machines in WF.

Ruurd Boeke Enterprise development and technobabble - Workflow as cont

Tue, 19 Feb 2008 22:31:02 GMT

In this post and a few upcoming posts, I would like to present a solution I have built using Workflow as the controller for your WPF applications. I wish I could call it a framework and think of a great name for it, but it does not aim to solve all your UI-building problems in one go. It does however offer a very easy way to build a loosely coupled application, driven by WF and could be used to build upon for your own solution.

Windows Workflow Foundation Tutorial Series - Joe On ASP.NET

Fri, 08 Feb 2008 23:16:04 GMT

Great tutorial series on using WF.

Part 2 - Leveraging Workflow Foundation - Invest in the Infrastructure

Wed, 30 May 2007 14:01:01 GMT

In Part 1 of Leveraging Workflow Foundation we discussed how Workflow Foundation is just an API. Since APIs don't provide business value out of the box, it is important engineers exploring Workflow Foundation for the first time approach it in the same manner they would any API: write once, run everywhere. In other words, instead of building out the workflow components for one application, look at it from the 10,000 feet view. This is of course going to take more time than one might originally think so be sure to allow for this in development time. We'll look at the basics engineers starting with Workflow Foundation will need to think about to invest in their workflow infrastructure. Who knows, we may even find some rusty washers and shinny pennies along the way.

Part 1 - Leveraging Workflow Foundation - It is just an API

Mon, 14 May 2007 07:16:01 GMT

To help you limit the amount of rusty washers you will run into with Workflow Foundation, I wanted to share our team's experience in working through Workflow. In this multiple part series we'll look at some of the challenges the team faced and how we solved some of these. I say "some" of these because we took side steps around the rusty washers we found due to our short time frame. Hopefully this brain dump of information will save others time who are about to start using Workflow Foundation. I'll cover some of the in and outs where you will want to look into workflow and some of the pitfalls we had to work around (the rusty washers).

How to Create a WebService Based on a Workflow

Tue, 17 Apr 2007 13:16:01 GMT

Keyvan describes how to create a webservice that runs a workflow.

Listening to DependencyProperty changes

Wed, 07 Mar 2007 12:46:01 GMT

Listening to DependencyProperty changes

Windows Workflow 101 or 2 Months with WF

Fri, 02 Mar 2007 19:31:01 GMT

This article presents both an introduction to WF as well as in-depth discussion of the issues I faced in trying to apply it's model to a real-world application

NewsReader apps (built using NewsReader SDK)

Fri, 02 Mar 2007 18:46:02 GMT

NewsReader apps (built using NewsReader SDK)

How to Write a Designer Component for Custom Workflow Activity

Thu, 15 Feb 2007 15:46:01 GMT

In last post of his series about writing a custom workflow activity, Keyvan discusses about writing a designer component and designer theme for a custom workflow activity and updates his sample workflow.

First Windows Workflow

Thu, 08 Feb 2007 20:16:01 GMT

Learn to create and debug a simple Sequential workflow and State Machine workflow in Windows Worklow Foundation (WF). Excerpt: This chapter will show you the code that's generated when a new workflow project is created, as well as demonstrate how workflow and activities are created as classes. After I introduce you to the code that's generated, you'll create a simple Sequential workflow and State Machine workflow. You'll create both these workflows in both VB and C#, and I'll show you how to debug the workflows using a console application.

How to Write a Toolbox Item Component for Custom Workflow Activity

Tue, 06 Feb 2007 10:31:01 GMT

In third post of his posts about writing a custom workflow activity Keyvan talks about writing a Toolbox Item component for custom workflow activity.

Compiling Workflows

Fri, 02 Feb 2007 17:16:01 GMT

How to add custom code generation to a custom WF activity

Binding Across States in WF

Fri, 02 Feb 2007 11:16:01 GMT

Understand the effect that subordinate AECs have on data binding in State Machine WF workflows

How to Write a Validator for Custom Workflow Activity

Wed, 31 Jan 2007 14:16:01 GMT

After talking about writing a custom workflow activity in its simplest form, now Keyvan shows how to add additional functionality to a custom workflow by adding a validator component to it.

How to Write a Custom Workflow Activity

Fri, 26 Jan 2007 17:16:01 GMT

In first part of his post series about writing a custom workflow, Keyvan discusses about writing a custom workflow activity by giving a simple example.

Dynamically Modifying a Workflow from the Outside

Wed, 06 Dec 2006 13:31:01 GMT

Keyvan Nayyeri shows how to externaly modify a running workflow dynamically.