WF Framework Programming-Designer Section: Workflow Designer

1 Net Designer Foundation framework

The namespace for the. NET designer infrastructure is System.ComponentModel.Design, and the three designer architectures for WF, ASP.net, and win from are all built on. NET itself provides the underlying framework.

The namespace for the WF designer frame is System.Workflow.ComponentModel.Design, and the related classes are in the namespace. Before researching WF designer, let's look at the WinForm designer first. The study of the WinForm Designer is helpful for the understanding of WF designer.

1.1 WinForm Designer Design:

Have studied a few days sharpdevelop, a free open source IDE development environment, and has a similar plug-in ideas like eclipse. There is a more complete WinForm designer implementation in this open source IDE. Winform

The IDE relies primarily on the following interfaces and classes to implement. As long as the relevant interfaces and abstractions are implemented. NET Framework will help us implement the WinForm designer. Much like template method. The corresponding interfaces and classes are:

WinForm Designer Structure

Üdesingerhost:

1. Service Management: Service container and service provider

2. Component Management and transaction management

Üisite:

binding components and containers, all services in the designerhost can be obtained by isite (GetService)

Üiserviceprovide

Üidesinger

Provide custom service, design period add menu commands to Component context menu, add component Implementation action

Associating with Icompont in the Initialize method

Toolbox implementation:

Üitoolboxservice

Toolbox services, the primary purpose of which is to store ToolboxItem

How do I populate the toolbox?

To use ToolboxItemFilterAttribute

ADDTOOLBOXENTRIES:LISTBOX.ITEMS.ADD (new Selfhosttoolboxitem (entry)

CategoryNames: Toolbox Category Properties

Addcreator:

One of the Workflowdesignercontrol I think is the application of mediator model

• Select Service

Related Assemblies and CCU containers: Typeprovider

We can down sharpdevelop the source code to see, there is a book specifically introduced this.