Question

我有wcf服务，更新数据库需要10-15秒，并且我不会在服务工作时运行/显示带有加载/等待状态栏的表单，并且当服务完成时我需要关闭点击表单。< / p>

我的问题是，当我运行ShowDialog();时，它会卡在上面，而不是去我的服务。我在这里做错了什么？

我的代码

我的功能

 public static void UpdateSNXRATES(object sender, EventArgs e)
    {
        WaitForm waitF = new WaitForm();
        waitF.ShowDialog();//here it stuck

        using (var Server = new ServiceReference.Service1Client())
        {
            Server.ClientCredentials.Windows.ClientCredential.Domain = strDomain;
            Server.ClientCredentials.Windows.ClientCredential.UserName = strUser;
            Server.ClientCredentials.Windows.ClientCredential.Password = strPassword;
            success=Server.UpdateSNXRATES();
        }


        waitF.Close();

    }

我的WaitForm代码

 public partial class WaitForm : Form
    {
        public WaitForm()
        {
            InitializeComponent();
        }

        private void WaitForm_Load(object sender, EventArgs e)
        {
            radWaitingBar1.StartWaiting();
            radWaitingBar1.WaitingSpeed = 100;
            radWaitingBar1.WaitingStep = 5;

        }
    }

Answer 1

ShowDialog()是一个阻塞调用，即当前线程将一直等待此行，直到表单关闭（由用户）。您应该在与主应用程序线程不同的线程上显示WaitForm，并结合Invoke()调用以确保您不进行非法的跨线程操作。您可以使用BackgroundWorker组件加载并在其他主题上显示WaitForm。

或者，最好，您应该将服务初始化和运行代码移至BackgroundWorker。这将确保您不需要任何Invoke。

示例

ServiceReference.Service1Client Server; WaitForm waitF; public static void UpdateSNXRATES(object sender, EventArgs e) { BackgroundWorker bw = new BackgroundWorker(); bw.WorkerReportsProgress = true; bw.DoWork += bw_DoWork; bw.RunWorkerCompleted += bw_RunWorkerCompleted; bw.RunWorkerAsync(); waitF = new WaitForm(); waitF.ShowDialog(); } static void bw_DoWork(object sender, DoWorkEventArgs e) { Server = new ServiceReference.Service1Client(); Server.ClientCredentials.Windows.ClientCredential.Domain = strDomain; Server.ClientCredentials.Windows.ClientCredential.UserName = strUser; Server.ClientCredentials.Windows.ClientCredential.Password = strPassword; success = Server.UpdateSNXRATES(); } static void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { waitF.Close() }

WinForm新表单（等待）在打开时卡住

1 个答案: