public Page2()
{
Title = "Messages";
BindingContext = new Page2ViewModel();
// Send messages when buttons are pressed
var button1 = new Button {
Text = "Say Hi"
};
button1.Clicked += (sender, e) => {
MessagingCenter.Send <Page2> (this, "Hi");
};
var button2 = new Button {
Text = "Say Hi to John"
};
button2.Clicked += (sender, e) => {
MessagingCenter.Send <Page2, string> (this, "Hi", "John");
};
var button3 = new Button {
Text = "Unsubscribe from alert"
};
button3.Clicked += (sender, e) => {
MessagingCenter.Unsubscribe <Page2, string> (this, "Hi");
DisplayAlert("Unsubscribed",
"This page has stopped listening, so no more alerts; however the ViewModel is still receiving messages.",
"OK");
};
// Subscribe to a message (which the ViewModel has also subscribed to) to pop up an Alert
MessagingCenter.Subscribe <Page2, string> (this, "Hi", (sender, arg) => {
DisplayAlert("Message Received", "arg=" + arg, "OK");
});
var listView = new ListView();
listView.SetBinding(ListView.ItemsSourceProperty, "Greetings");
Content = new StackLayout {
Padding = new Thickness(0, 20, 0, 0),
Children = { button1, button2, button3, listView }
};
}
public Page2()
{
Title = "Messages";
BindingContext = new Page2ViewModel ();
// Send messages when buttons are pressed
var button1 = new Button { Text = "Say Hi" };
button1.Clicked += (sender, e) => {
MessagingCenter.Send<Page2> (this, "Hi");
};
var button2 = new Button { Text = "Say Hi to John" };
button2.Clicked += (sender, e) => {
MessagingCenter.Send<Page2, string> (this, "Hi", "John");
};
var button3 = new Button { Text = "Unsubscribe from alert" };
button3.Clicked += (sender, e) => {
MessagingCenter.Unsubscribe<Page2, string> (this, "Hi");
DisplayAlert("Unsubscribed",
"This page has stopped listening, so no more alerts; however the ViewModel is still receiving messages.",
"OK");
};
// Subscribe to a message (which the ViewModel has also subscribed to) to pop up an Alert
MessagingCenter.Subscribe<Page2, string> (this, "Hi", (sender, arg) => {
DisplayAlert("Message Received", "arg=" + arg, "OK");
});
var listView = new ListView ();
listView.SetBinding (ListView.ItemsSourceProperty, "Greetings");
Content = new StackLayout {
Padding = new Thickness (0, 20, 0, 0),
Children = {button1, button2, button3, listView }
};
}
