我遇到了用Visual Studio编写的自定义审批工作流的问题。它使用自定义内容类型创建批准任务。我在共享点企业环境中开发了工作流程,但客户端正试图在基础服务器上运行它。我遇到的问题是内容类型被分配给任务列表。每当工作流程运行时,我都无法编辑列表项目或更新任务项目。只要我从任务列表中删除内容类型,我就可以很好地查看和编辑所有记录。我在日志中发生以下事件:Sharepoint工作流与自定义内容类型的问题
System.NullReferenceException:对象引用未设置为对象的实例 。在 Microsoft.SharePoint.Publishing.CachedListItem.GetWorkflowInfo(SPListItem 项目)在Microsoft.SharePoint.Publishing.CachedListItem
为了使它更有趣,我是能够运行工作流时未指定内容类型并获取创建的审批任务,然后添加内容类型,然后成功编辑和更新这两个记录。
而且一些代码....这是我与内容类型的方法创建任务:
private void createTaskWithContentType1_MethodInvoking(object sender, EventArgs e)
{
//set the primary approval task as not completed
this.primaryApprovalTaskCompleted = false;
//get the primary approver
var field = workflowProperties.Item.Fields.GetField("primaryApprover") as SPFieldUser;
var fieldValue = field.GetFieldValue(workflowProperties.Item[field.Id].ToString()) as SPFieldUserValue;
createTaskWithContentType1.TaskProperties.AssignedTo = fieldValue.User.LoginName;
createTaskWithContentType1.TaskProperties.DueDate = DateTime.Now.AddHours(4);
createTaskWithContentType1.TaskProperties.Title = "Primary Approval for Batch Job ID: " + workflowProperties.Item["batchJobId"].ToString();
createTaskWithContentType1.TaskProperties.SendEmailNotification = true;
}
和我的内容类型的XML:
<?xml version="1.0" encoding="utf-8"?>
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
<Field ID="{46F9442F-19E3-4818-8FE7-719E5961C8A1}" Name="ApprovalStatus" DisplayName="Approval Status" Type="Choice" Required="TRUE" Sealed="TRUE" Overwrite="True" >
<CHOICES>
<CHOICE>Approve</CHOICE>
<CHOICE>Reject</CHOICE>
</CHOICES>
</Field>
<Field ID="{B485C5E5-A85C-4C09-AE96-F7FC71FB4A3D}" Name="ApprovalNotes" DisplayName="Approval Notes" Type="Text" Overwrite="True" />
<ContentType ID="0x01080100922FA9051D1C471DA956E627E6B3B81E"
Name="ApprovalContentType"
Group="Custom Content Types"
Description="Approval Content Type"
Version="0"
Overwrite="True">
<FieldRefs>
<RemoveFieldRef ID="{a8eb573e-9e11-481a-a8c9-1104a54b2fbd}" Name="Priority" Hidden="TRUE"/>
<RemoveFieldRef ID="{c3a92d97-2b77-4a25-9698-3ab54874bc6f}" Name="Predecessors" Hidden="TRUE"/>
<RemoveFieldRef ID="{c15b34c3-ce7d-490a-b133-3f4de8801b76}" Name="Status" Hidden="TRUE"/>
<RemoveFieldRef ID="{d2311440-1ed6-46ea-b46d-daa643dc3886}" Name="PercentComplete" Hidden="TRUE"/>
<RemoveFieldRef ID="{7662cd2c-f069-4dba-9e35-082cf976e170}" Name="Body" Hidden="TRUE"/>
<FieldRef
ID="{46F9442F-19E3-4818-8FE7-719E5961C8A1}"
Name="ApprovalStatus" Sealed="TRUE" Required="TRUE"/>
<FieldRef
ID="{B485C5E5-A85C-4C09-AE96-F7FC71FB4A3D}"
Name="ApprovalNotes"/>
</FieldRefs>
</ContentType>
</Elements>
您是如何设置创建任务对象的内容类型ID的?我遇到与使用内容类型创建任务的工作流程相同的问题,并想尝试解决您的问题。 – Peterson 2014-07-07 14:05:18