Microsoft Dynamics CRM 工作流教程不起作用

Question

我正在尝试按照教程进行操作： https://msdn.microsoft.com/en-us/library/gg509012.aspx

但是，当我排队时：

protected override void Execute(CodeActivityContext executionContext)
{
    IWorkflowContext context = executionContext.GetExtension<IWorkflowContext>();

    //Create an Organization Service
    IOrganizationServiceFactory serviceFactory = executionContext.GetExtension<IOrganizationServiceFactory>();
    IOrganizationService service = serviceFactory.CreateOrganizationService(context.InitiatingUserId);

    //Retrieve the contact id
    Guid contactId = this.Contact.Get(executionContext).Id;
}

它在 C# 中给出错误。

C#“程序”不包含“联系人”的定义，并且找不到接受“程序”类型的第一个参数的扩展方法“联系人”您是否缺少 using 指令或程序集引用？

this.Contact 是什么？

Answer 1

联系人是自定义活动工作流的一个参数

//Define the properties
[RequiredArgument]
[Input("Update Next Birthdate for")]
[ReferenceTarget("contact")]

public InArgument<EntityReference> Contact { get; set; }

protected override void Execute(CodeActivityContext executionContext)
{
    IWorkflowContext context = executionContext.GetExtension<IWorkflowContext>();

    //Create an Organization Service
    IOrganizationServiceFactory serviceFactory = executionContext.GetExtension<IOrganizationServiceFactory>();
    IOrganizationService service = serviceFactory.CreateOrganizationService(context.InitiatingUserId);

    //Retrieve the contact id
    Guid contactId = this.Contact.Get(executionContext).Id;
}

当您从工作流或操作调用自定义时，您必须发送所需的输入参数，例如联系人。