开发自定义的SharePoint 顺序工作流

假设有这样一个需求：

客户需要用Moss2010有个一个请假单(绑定有工作流)，有这样几个用户（角色）：1.Moss (员工)、2.Leader(组长)、3.Manager（经理）、4.Boss（老板）



当员工创建请假单时，启动工作流。工作流具体需求为，当员工新建了一张新的请假单时，发送邮件给Leader，请他审批，如果Leader在两天内审批（同意或拒绝）工作流结束，但如果Leader在两天内没有审批，则发送邮件给Manager请求Manager审批，如果Manager再两天内审批（同意或拒绝）工作流结束，如果Manager在两天内没有审批，则发送邮件给Boss,请求他审批该请假单，如果Boss在一天内审批（同意或拒绝）工作流结束，如果Boss在一天内审批没有审批则该单据自动生效（自动审批通过），工作流结束。



分析：考虑以上需求用MossoutOfBox 工作流和SharePointdesigner 设计的工作流都不太好实现，因此采用开发自定义的SharePoint顺序工作流。

步骤如下：

1.      启动VS2010 ->New ->Project->VisualC#->SharePoint->2010 (先择Sequential Workflow,点击OK)



选择AskForLeaving这个列表作为该工作流的绑定对象

2.      VS2010 默认情况下会自动添加一个onWorkflowActivated1，在onWorkflowActivated1下面添加一个WhileActivity, 在 While Activity中添加一个delayActivity, 在WhileActivity下面添加一个 codeActivity：



3.      转到代码视图，添加如下代码 (在类中加入如下成员)            

bool isWorkFlowPending = true;   // 用于标记工作流对应的单据是否在等待审批
DateTime startTime = DateTime.Now; // 用于记录工作流启动的时间

4.  配置 onWorkflowActivated1

a.      转到工作流审计界面

b.     选中onWorkflowActivated1，在Invoke(Handlers) 中输入OnActived 并按回车，VS会自动创建一个OnActived方法，在其中加入下列代码

this.startTime = DateTime.Now;
// Send mail to Leader for request approval

  

5.  配置delayActivity1，将其TimeoutDuration设置为00:05:00，表示该活动将会将工作流延迟5分钟再向下执行（注因为SharePoint的Timer是每五分钟处理一次工作流事件，所以延迟5分钟最长可能让InitializeTimeoutDuration中的代码10才执行一次），在delayActivity1_InitializeTimeoutDuration 中添加如下代码：

    

if (workflowProperties.Item["Status"].ToString().Equals("Approved") || workflowProperties.Item["Status"].ToString().Equals("Rejected"))
{
this.isWorkFlowPending = false;
}
else
{
DateTime now = DateTime.Now;
int days = (now - this.startTime).Days;
if (days == 2)
{
// Send mail to Manager for request approval
}
else if(days == 4)
{
// Send mail to Boss for request approval
}
else if (days == 6)
{
workflowProperties.Item["Status"] = "Approved";
workflowProperties.Item.Update();
}
}

 

6.  配置codeActivity1，在codeActivity1_ExecuteCode 中发送邮件通知用户审批结果

// Send mail to theuser notify that record has been approved or rejected

发送邮件的代码请参考http://blog.csdn.net/farawayplace613/article/details/6759538

 

以下是完整代码Workflow1.cs：

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Drawing;
using System.Linq;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Workflow;
using Microsoft.SharePoint.WorkflowActions;

namespace SequentailWFDemo.Workflow1
{
public sealed partial class Workflow1 : SequentialWorkflowActivity
{
public Workflow1()
{
InitializeComponent();
}

public Guid workflowId = default(System.Guid);
public SPWorkflowActivationProperties workflowProperties = new SPWorkflowActivationProperties();
bool isWorkFlowPending = true;
DateTime startTime = DateTime.Now;

private void OnActived(object sender, ExternalDataEventArgs e)
{
this.startTime = DateTime.Now;

// Send mail to Leader for request approval
}

private void IsWorkFlowPending(object sender, ConditionalEventArgs e)
{
e.Result = this.isWorkFlowPending;
}

private void codeActivity1_ExecuteCode(object sender, EventArgs e)
{
// Send mail to the user notify that record has been approved or rejected
}

private void delayActivity1_InitializeTimeoutDuration(object sender, EventArgs e)
{
if (workflowProperties.Item["Status"].ToString().Equals("Approved") || workflowProperties.Item["Status"].ToString().Equals("Rejected"))
{
this.isWorkFlowPending = false;
}
else
{
DateTime now = DateTime.Now;
int days = (now - this.startTime).Days;
if (days == 2)
{
// Send mail to Manager for request approval
}
else if(days == 4)
{
// Send mail to Boss for request approval
}
else if (days == 6)
{
workflowProperties.Item["Status"] = "Approved";
workflowProperties.Item.Update();
}
}
}
}
}

Workflow1.designer.csWorkflow1.designer.cs：

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Drawing;
using System.Reflection;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;

namespace SequentailWFDemo.Workflow1
{
public sealed partial class Workflow1
{
#region Designer generated code

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
[System.Diagnostics.DebuggerNonUserCode]
private void InitializeComponent()
{
this.CanModifyActivities = true;
System.Workflow.Activities.CodeCondition codecondition1 = new System.Workflow.Activities.CodeCondition();
System.Workflow.ComponentModel.ActivityBind activitybind2 = new System.Workflow.ComponentModel.ActivityBind();
System.Workflow.Runtime.CorrelationToken correlationtoken1 = new System.Workflow.Runtime.CorrelationToken();
System.Workflow.ComponentModel.ActivityBind activitybind1 = new System.Workflow.ComponentModel.ActivityBind();
this.delayActivity1 = new System.Workflow.Activities.DelayActivity();
this.codeActivity1 = new System.Workflow.Activities.CodeActivity();
this.whileActivity1 = new System.Workflow.Activities.WhileActivity();
this.onWorkflowActivated1 = new Microsoft.SharePoint.WorkflowActions.OnWorkflowActivated();
//
// delayActivity1
//
this.delayActivity1.Name = "delayActivity1";
this.delayActivity1.TimeoutDuration = System.TimeSpan.Parse("00:05:00");
this.delayActivity1.InitializeTimeoutDuration += new System.EventHandler(this.delayActivity1_InitializeTimeoutDuration);
//
// codeActivity1
//
this.codeActivity1.Name = "codeActivity1";
this.codeActivity1.ExecuteCode += new System.EventHandler(this.codeActivity1_ExecuteCode);
//
// whileActivity1
//
this.whileActivity1.Activities.Add(this.delayActivity1);
codecondition1.Condition += new System.EventHandler<System.Workflow.Activities.ConditionalEventArgs>(this.IsWorkFlowPending);
this.whileActivity1.Condition = codecondition1;
this.whileActivity1.Name = "whileActivity1";
activitybind2.Name = "Workflow1";
activitybind2.Path = "workflowId";
//
// onWorkflowActivated1
//
correlationtoken1.Name = "workflowToken";
correlationtoken1.OwnerActivityName = "Workflow1";
this.onWorkflowActivated1.CorrelationToken = correlationtoken1;
this.onWorkflowActivated1.EventName = "OnWorkflowItemChanged";
this.onWorkflowActivated1.Name = "onWorkflowActivated1";
activitybind1.Name = "Workflow1";
activitybind1.Path = "workflowProperties";
this.onWorkflowActivated1.Invoked += new System.EventHandler<System.Workflow.Activities.ExternalDataEventArgs>(this.OnActived);
this.onWorkflowActivated1.SetBinding(Microsoft.SharePoint.WorkflowActions.OnWorkflowActivated.WorkflowIdProperty, ((System.Workflow.ComponentModel.ActivityBind)(activitybind2)));
this.onWorkflowActivated1.SetBinding(Microsoft.SharePoint.WorkflowActions.OnWorkflowActivated.WorkflowPropertiesProperty, ((System.Workflow.ComponentModel.ActivityBind)(activitybind1)));
//
// Workflow1
//
this.Activities.Add(this.onWorkflowActivated1);
this.Activities.Add(this.whileActivity1);
this.Activities.Add(this.codeActivity1);
this.Name = "Workflow1";
this.CanModifyActivities = false;

}

#endregion

private DelayActivity delayActivity1;

private WhileActivity whileActivity1;

private CodeActivity codeActivity1;

private Microsoft.SharePoint.WorkflowActions.OnWorkflowActivated onWorkflowActivated1;
}
}