Question

我有一个表单，我建立了与Windows Servie的连接（我的项目中的服务参考）。然后，当用户按下按钮时，我从服务中获取最新数据。由于数据的检索需要一段时间，我正在考虑使用后台工作程序，因此我不会阻止UI。问题是：我可以使用已在表单加载时建立的连接吗？或者这会崩溃我的app / require调用？

 class SomeWindowsForm
{

    public ServiceClient client
    onLoad()
    {
        client = new ServiceClient("Address"); //this is a Service Reference in my Project
        client.Connect();

        BackgroundWorker bw = new BackgroundWorker(do_Work);
        bw.DoWork += new DoWorkEventHandler(finished_Work);
        bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler();
    }

    timer_tick()
    {
        client.SendPing(); // this keeps the connection
    }

    buttonClick()
    {
        bw.RunWorkerAsync();// can I pass the client here to worker??? 
    }

    do_Work()
    {
        var log = client.getData(); // Is this allowed, I am callling the client which has been created in the form??
        return log;
    }

    finished_Work()
    {
        textBox.Text = e.Argument;    
    }
}

Answer 1

通常，BackgroundWorker的结果是这样分配的：

namespace Shape {

    class Rectangle {
    public:
        friend std::ostream &operator<<(std::ostream &os, const Rectangle &rectangle);
    };

    std::ostream &operator<<(std::ostream &os, const Rectangle &rectangle);
}

从Windows窗体使用服务引用的后台工作者

1 个答案: