编码流程图并且无法返回 OutArgument

Question

我正在使用代码（而不是设计时）创建流程图工作流

代码

static Flowchart CreateFlowChart()
{
    Variable<string> response = new Variable<string>();
    Variable<string> isApproved = new Variable<string>();

    FlowStep approved = new FlowStep
    {
        Action = new Assign
        {
            To = new OutArgument<string> (isApproved),
            Value = new InArgument<string>((context) => response.Get(context))
        }
    };

    FlowStep rejected = new FlowStep
    {
        Action = new Assign
        {
            DisplayName = "Approved",
            To = new OutArgument<string>(isApproved),
            Value = new InArgument<string>((context) => response.Get(context))
        }
    };

    FlowDecision flowDecision = new FlowDecision
    {

        Condition = ExpressionServices.Convert<bool>((ctx) => response.Get(ctx).ToString() == "approved"),
        True = approved,
        False = rejected
    };

    FlowStep LineManagerApproval = new FlowStep
    {
        Action = new ReadLine 
        {
            BookmarkName = readLineBookmark,
            Result = new OutArgument<string>(response)
        },

        Next = flowDecision
    };           

    Flowchart flowChart = new Flowchart
    {
        DisplayName = "Line Manager Approval Process",
        Variables = { response, isApproved },
        StartNode = LineManagerApproval,
        Nodes = 
        {
            LineManagerApproval,
            flowDecision,
            approved,
            rejected
        }
    };
    return flowChart;
}

我在我的活动帖子中设置OutArgument<string> 以进行流量决策。

当工作流程完成时，我希望有 e.OutPuts["isApproved"] 但 e.OutPuts 总是给计数 0；

application.Completed = delegate(WorkflowApplicationCompletedEventArgs e)
{

    Console.WriteLine("Workflow {0} Completed.", e.InstanceId);
    //bool isApproved = (bool)e.Outputs["isApproved"];

};

基本上我正在努力从流程图中返回 OutArgument。 请问有什么帮助吗？

Answer 1

IsApproved 应在工作流级别设置为 outArgument。您似乎将其设置为变量。