WWF Articles (16) - Page 1

Workflow Foundation 4.0 - WorkflowApplication Actions 

Workflow Foundation 4.0 is introduced a significant amount of changes from the previous versions of the technology. We already discussed about various features of Workflow, data model and persistence. In this article we will discuss more about the host application, how we can invoke a workflow and about the various workflow application actions which we can handle in host application.

Workflow Foundation 4.0 - Validation 

Workflow Foundation 4.0 has very good support for custom activity development. One of the areas in custom activity development is validating the properties and its values in design time. In this article we will discuss about various validation options available with workflow foundation 4.0.

Workflow Foundation 4.0 - Type Converter 

Workflow Foundation 4.0 is introduced a significant amount of change in the Activity Designer. In WF4.0, Activity Designers are defined using WPF. Property management and display is one of the important aspects of a custom Activity Designer.

Workflow Foundation 4.0 - PersistenceParticipant 

We already discussed about Persistence and Extensions in workflow foundation 4.0. Persistence is the way of storing the current state of a workflow into an instance store. Extensions are special classes for sharing data among child activities, workflow and Host application. In case of normal Extension, the data shared using the Extension won’t be stored to the instance store as part of the Persistence.

Workflow Foundation 4.0 - PropertyValueEditor 

Workflow Foundation 4.0 has very good support for custom activity development. We can have our own custom activity with very good look and feel. When you define a custom activity, one of the main requirements is how to manage the associated properties in the property grid.

Workflow Foundation 4.0 - WCF Integration 

Workflow Foundation 4.0 is integrated with WCF and WPF. WF 4.0 uses WPF for activity designers and gives a very good support for custom activity designers with full WPF functionality. In this article we will look into the WCF integration to WF4.0.

Workflow Foundation 4.0 - Persistence 

Workflow Foundation 4.0 is introduced a significant amount of changes from the previous versions of the technology. One of the main features of workflow is Persistence. In this article we will be discussing about Persistence.

Workflow Foundation 4.0 - Extension 

Workflow Foundation 4.0 is introduced a significant amount of change from the previous versions of the technology. In WF4.0, we are using Extensions for communication between the host and workflow, the workflow and its child activities and between child activities. There are two types of extensions in WF4.0, in this article we will look into the normal extensions.

Workflow Foundation Overview & Creating Simple Sequential Workflow 

This article provides overview of Windows Workflow Foundation and step by step to create simple Sequential Workflow which accepts Candidate Name and Years of Experience as parameter and returns ValidCandidate if years of experience is less than 7 otherwise InValidCandidate.

Workflow Foundation 4.0 - WorkflowDataContext 

Workflow Foundation 4.0 is introduced a significant amount of change from the previous versions of the technology. This article will be the third in a series of articles. In this article we will be discussing about how to pass data from host application to workflow without using bookmarks.

Workflow Foundation 4.0 - BookMark 

Workflow Foundation 4.0 is introduced a significant amount of change from the previous versions of the technology. This article will be the second in a series of articles. In this article we will be discussing about the Bookmark and related topics used in Custom Activity Development.

Workflow Foundation 4.0 - Custom Activity 

Workflow Foundation 4.0 is introduced a significant amount of change from the previous versions of the technology. This article will be the first in a series of articles. In this article I will be discussing about the introduction to Custom Activity Development. In next articles, I will be concentrating more on the different aspects of Custom Activity Development.

Workflow Foundation 4.0 - Activity Designer 

One of the major changes in Windows Workflow Foundation 4.0 is the Activity Designer. The new Activity Designer is based on WPF.

Workflow Local Services using CallExternalMethodActivity 

This post will teach you how you can develop local services for the workflow and call them using CallExternalMethodActivity. Sample source code included

State Machine Work flow Discussion 

This is a nice talk between Mr. RC and Mr. Shiv about state machine work flow. RC starts talking about an order project and they end up in a nice discussion which gives us step by step approach of how to execute a state machine work flow. This article was written in a straight half & hour session so please excuse for my English as it’s my second language and for any spelling mistakes….so guys enjoy State machines.