Using DisplayActionSheet we can Perform Perform Any kind of Action.
var x = await App.Current.MainPage.DisplayActionSheet("Title", "Cancel", null, "Button1", "Button2", "Button3","Button4");
Console.WriteLine(x);
Here,Above Example we take 4 buttons and using DisplayActionSheet we can perform Any kind of Action on that buttons.
Using DisplayAlert we can't do that.Using DisplayAlert we can only show Alert box to the user.