C# -如何不使WPF用户界面冻结，同时详细说明开发者社区

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 private void btn_Start_Click(object sender, RoutedEventArgs e)
            pb_loader.IsIndeterminate = true; //<- it has to start to make animation
            IEmailService emailService = new EmailService();
            IUserQueryService emailQueryService = new UserQueryService();
            var idIniziale = int.Parse(txtIdIniziale.Text);
            var idFinale = int.Parse(txtIdFinale.Text);
            var n = idFinale - idIniziale;
            string mail = "";
            for(int i=0; i<=n; i++)
                mail = txtMail.Text + idIniziale + "@mail.local";
                var exist = emailQueryService.CheckUserExist(mail); //<- db operation method
                if (exist == false)
                   var lastUniqueId = emailQueryService.GetLastUniqueId();//<- db operation method
                   lastUniqueId = lastUniqueId + 1;
                   var idUtente = emailService.SalvaUtente(mail, lastUniqueId); //<- db operation method
                   emailService.AssegnaReferente(idUtente, txtMail.Text);//<- db operation method
                   emailService.AssegnaRuoli(idUtente); //<- db operation method
                idIniziale++;
            pb_loader.IsIndeterminate = false; //<- it has to end animation of loading
        }

private async void btn_Start_Click(object sender, RoutedEventArgs e)
     // prevent click while operation in progress
     btn_Start.IsEnabled = false;
     pb_loader.IsIndeterminate = true;
     // access UI elements before running the Task
     var mail = txtMail.Text + idIniziale + "@mail.local";
     await Task.Run(() =>
         // perform background operation
         // use local variables "mail" etc. here

问 C# -如何不使WPF用户界面冻结，同时详细说明 EN

回答 1

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