sharepoint 2010 beta Workflow

一、准备条件

系统：Windows Server2008，Windows Server 2008 R2;

软件：

1、SharePoint Server 2010 Beta：http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=77c30c6c-47fc-416d-88e7-8122534b3f37

2、Microsoft Visual Studio 2010 Ultimate Beta ：http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=dc333ac8-596d-41e3-ba6c-84264e761b81

3、Microsoft® SQL Server® 2008 Enterprise Evaluation: Trial Experience for Developers：http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=6b10c7c1-4f97-42c4-9362-58d4d088cd38

4、Office 2010 beta

二、主体

阅读该Demo需要有moss 2007 开发WF 的基础。下载代码

2010 相对于2007创建workflow简单了许多，2010已经将关联任务的内容类型内置到Workflow的Elements.xml文件中，初始化表单和关联表单都可以直接创建。

1、表单

初始化表单：

2010中初始化表单已经将创建流程实例的代码自动生成，只需在 GetInitiationData()方法中将初始化表单的数据返回即可。

任务表单：

在工程中添加新项选择应用程序模板，创建任务表单.将表单与关联任务的内容类型连续起来。在任务的内容类型的节点中ContentType〉XmlDocuments>XmlDocument〉FormUrls〉Edit添加任务表单页面。通过Workflow节点的属性TaskListContentTypeId与流程关联。

下列以创建任务表单为例，如下图：

新建项目：

选择模板，SharePoint下面的2010，在选择2010模板下的Application Page。

2、流程设计器

打开vs2010，创建顺序工作流：

如下图：

３、代码

初始化表单GetInitiationData()的代码：

　　　　　　//Build the AssociationData XML

StringBuilder associtionDataXML = new StringBuilder();

associtionDataXML.AppendLine("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>");

associtionDataXML.AppendLine("<workflow>");

associtionDataXML.AppendLine("<" + this.txtApprover.ID + ">");

associtionDataXML.AppendLine(this.txtApprover.Text);

associtionDataXML.AppendLine("</" + this.txtApprover.ID + ">");

associtionDataXML.AppendLine("</workflow>");

//End of Build the AssociationData XML

return associtionDataXML.ToString();

任务表单的代码：

protected void btnReject_Click(object sender, EventArgs e)

{

Hashtable htData = new Hashtable();

htData["TaskStatus"] = "Completed";

htData["TaskData"] = "Reject";

SPListItem _taskItem = this.Web.Lists[new Guid(this.Request.QueryString["List"])].GetItemById(Convert.ToInt32(this.Request.QueryString["ID"]));

SPWorkflowTask.AlterTask(_taskItem, htData, true);

Guid workflowInstanceId = new Guid(_taskItem["WorkflowInstanceID"].ToString());

_workflowInstance = new SPWorkflow(this.Web, workflowInstanceId);

this.RedirectToListDefaultView();

}

protected void btnApproved_Click(object sender, EventArgs e)

{

Hashtable htData = new Hashtable();

htData["TaskStatus"] = "Completed";

htData["TaskData"] = "Approved";

SPListItem _taskItem = this.Web.Lists[new Guid(this.Request.QueryString["List"])].GetItemById(Convert.ToInt32(this.Request.QueryString["ID"]));

SPWorkflowTask.AlterTask(_taskItem, htData, true);

Guid workflowInstanceId = new Guid(_taskItem["WorkflowInstanceID"].ToString());

_workflowInstance = new SPWorkflow(this.Web, workflowInstanceId);

this.RedirectToListDefaultView();

}

/// <summary>

/// 跳转到列表默认视图页面

/// </summary>

protected void RedirectToListDefaultView()

{

SPUtility.Redirect(this.WorkflowInstance.TaskList.DefaultViewUrl, SPRedirectFlags.UseSource, this.Context);

}

流程设计器活动的代码

活动的属性：

        #region Properties
        public Guid workflowId = default(System.Guid);
        public SPWorkflowActivationProperties workflowProperties = new SPWorkflowActivationProperties();
        public Guid TaskId = default(System.Guid);
        public SPWorkflowTaskProperties TaskProperties = new Microsoft.SharePoint.Workflow.SPWorkflowTaskProperties();
        public String TaskOutcome = default(System.String);

        private string _approver;
        private string _approvalResult;
        #endregion

启动流程：

        private void onWorkflowActivated1_Invoked(object sender, ExternalDataEventArgs e)
        {
            workflowId = workflowProperties.WorkflowId;

            if (!string.IsNullOrEmpty(workflowProperties.InitiationData))
            {
                XmlDocument AssociationDataXML = new XmlDocument();
                AssociationDataXML.LoadXml(workflowProperties.InitiationData);
                _approver = AssociationDataXML.FirstChild.NextSibling.InnerText.ToString().Trim();
            }
        }

创建任务：

        private void createTask1_MethodInvoking(object sender, EventArgs e)
        {
            TaskId = Guid.NewGuid();
            TaskProperties.AssignedTo = _approver;
            TaskProperties.Title = "Test Title";
        }

审批任务：

       private void onTaskChanged1_Invoked(object sender, ExternalDataEventArgs e)
        {
            _approvalResult = TaskProperties.ExtendedProperties["TaskData"].ToString();

            if (_approvalResult == "Approved")
            {
                this.TaskOutcome = "同意！";
            }
            else if (_approvalResult == "Reject")
            {
                this.TaskOutcome = "拒绝！";
            }
        }
    }

４、 xml文件

Workflow的Elements.xml的任务内容类型节点ContentType