如何在Xamarin中的视图控制器之间传递数据

Question

我正在尝试在第一个和第二个ViewController之间传递一些数据。 我已经像这样实例化了第二个视图控制器：

RegistrationViewController registration = new RegistrationViewController();

我将文本字段的值设置为来自注册类的变量电子邮件，如下所示：

registration.email = txtEmail.Text; 
this.NavigationController.PushViewController(registration, true);

然后在第二个ViewController我使用它：

public string email { get; set; }
txtEmail.Text = email ;

可悲的是，我在电子邮件变量中没有值。如何成功将数据传递到新的ViewController。

更改控制器的代码：

 registration.email = txtEmail.Text;
    string password = txtPassword.Text;
    RegistrationViewController controller = this.Storyboard.InstantiateViewController("RegistrationViewController") as RegistrationViewController;

this.NavigationController.PushViewController(registration, true);
    this.NavigationController.PushViewController(controller, true);

Answer 1

基于此尝试一些事情：

SecondViewController controller = this.Storyboard.InstantiateViewController("SecondViewController") as SecondViewController;
//Here you pass the data from the registerViewController to the secondViewController
controller.email = registration.email;

this.NavigationController.PushViewController(registration, true);

希望有所帮助

Answer 2

试试

  UIStoryboard board = UIStoryboard.FromName("Main", null);
  UIViewController ctrl = (UIViewController)board.InstantiateViewController("RegistrationViewController");
  ctrl.ModalTransitionStyle = UIModalTransitionStyle.CrossDissolve;
  this.PresentViewController(ctrl, true, null);