WWF 工作流学习笔记(三进街)

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel.Design;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Workflow.Activities;
using System.Workflow.ComponentModel.Design;
using System.Workflow.ComponentModel;

namespace WindowsApplication3
{
public partial class Form1 : Form
{
private WorkflowView wlv;
private WorkflowViewWrapper workflowViewWrapper;
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
//这样是错误的
// wlv = new WorkflowView();
// this.panel1.Controls.Add(wlv);

//这个是正确的
this.workflowViewWrapper=new WorkflowViewWrapper(this);
this.panel1.Controls.Add(this.workflowViewWrapper.workflowView);
this.workflowViewWrapper.LoadDefaulttWorkflow();
}
}

public class WorkflowViewWrapper
{
private DesignSurface surface;
public WorkflowView workflowView;
private IDesignerHost host;
private SequentialWorkflowActivity sequentialWorkflow;

public WorkflowViewWrapper(Form parent)
{
//Create a Workflow Design Surface
//创建设计时的环境以显示WorkflowView
this.surface = new DesignSurface();

//Get the Workflow Designer Host
//获得管理设计器的接口对象
this.host=this.surface.GetService(typeof(IDesignerHost)) as IDesignerHost;
if(this.host==null)
return;

//Create a Sequential Workflow by using the Workflow Designer Host
sequentialWorkflow=(SequentialWorkflowActivity)host.CreateComponent(typeof(SequentialWorkflowActivity));
//sequentialWorkflow.ID=\"SequentialWorkflow1\";

//Create a Workflow view on the workflow Design surface
//指定的Surface显示WorkflowView
this.workflowView=new WorkflowView(this.surface as IServiceProvider);
this.workflowView.Dock=DockStyle.Fill;

//Activate the Workflow view
this.host.Activate();
}

public void LoadDefaulttWorkflow()
{
//Create a code activity
CodeActivity CodeActivity1= new CodeActivity();
sequentialWorkflow.Activities.Add(CodeActivity1);
host.RootComponent.Site.Container.Add(CodeActivity1);
}

}
}