Microsoft Dynamics CRM工作流教程无法正常工作

Question

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

但是，当我到达这条线时：

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＃中出错。

C＃'Program'不包含'Contact'的定义，并且没有扩展方法'Contact'接受类型'Program'的第一个参数，你是否缺少using指令或汇编引用？

什么是this.Contact ？

Answer 1

联系人是自定义活动工作流程的参数

//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;
}

从工作流或操作调用自定义时，必须发送所需的输入参数，例如Contact。