C# Forms.Grid类代码示例

		public OrderPageCode ()
		{
			Title = "Order Page - Code";
			var grid = new Grid {
				HorizontalOptions = LayoutOptions.FillAndExpand,
				VerticalOptions = LayoutOptions.FillAndExpand,
				Padding = new Thickness (15)
			};
			for (int x = 0; x < 7; x++) {
				grid.RowDefinitions.Add (new RowDefinition{ Height = new GridLength(50) });
			}
			grid.ColumnDefinitions.Add (new ColumnDefinition{ Width = new GridLength(90) });
			grid.ColumnDefinitions.Add (new ColumnDefinition{ Width = new GridLength (1, GridUnitType.Star) });

			grid.Children.Add (new Label { Text = "Purchaser's Name:" }, 0, 0);
			grid.Children.Add (new Label { Text = "Billing Address:" }, 0, 1);
			grid.Children.Add (new Label { Text = "Tip:", FontAttributes = FontAttributes.Bold }, 0, 2);
			grid.Children.Add (new Label { Text = "Phone Number:" }, 0, 3);
			grid.Children.Add (new Label { Text = "Comments:" }, 0, 4);
			grid.Children.Add (new Entry { Placeholder = "Full Name on Card" }, 1, 0);
			grid.Children.Add (new Editor (), 1, 1);
			grid.Children.Add (new Entry{ Keyboard = Keyboard.Numeric }, 1, 2);
			grid.Children.Add (new Entry { Keyboard = Keyboard.Telephone }, 1, 3);
			grid.Children.Add (new Editor (), 1, 4);

			var fstring = new FormattedString ();
			fstring.Spans.Add (new Span { Text = "Wait! ", ForegroundColor = Color.Red });
			fstring.Spans.Add (new Span { Text = "Please double check that everything is right." });
			grid.Children.Add (new Label { FormattedText = fstring }, 1, 5);
			grid.Children.Add (new Button { TextColor = Color.White, BackgroundColor = Color.Gray, Text = "Save" }, 1, 6);
			Content = grid;
		}

		public HomePageCS ()
		{
			var label = new Label {
				Text = "Label Shadow Effect",
				FontAttributes = FontAttributes.Bold,
				HorizontalOptions = LayoutOptions.Center,
				VerticalOptions = LayoutOptions.CenterAndExpand
			};
			label.Behaviors.Add (new EffectBehavior {
				Group = "Xamarin",
				Name = "LabelShadowEffect"
			});

			Content = new Grid { 
				Padding = new Thickness (0, 20, 0, 0),
				Children = {
					new Label {
						Text = "Effects Demo with a Behavior",
						FontAttributes = FontAttributes.Bold,
						HorizontalOptions = LayoutOptions.Center
					},
					label
				}
			};
		}

        private Grid SliderLabels()
        {
            var grid = new Grid {
                HorizontalOptions = LayoutOptions.FillAndExpand,
                ColumnDefinitions = {
                    new ColumnDefinition { Width = new GridLength (1, GridUnitType.Star) },
                    new ColumnDefinition { Width = new GridLength (1, GridUnitType.Star) },
                    new ColumnDefinition { Width = new GridLength (1, GridUnitType.Star) },
                    new ColumnDefinition { Width = new GridLength (1, GridUnitType.Star) },
                }
            };

            grid.Children.Add (
                SyncLabel ("1", LayoutOptions.StartAndExpand, new Thickness (5, 0, 0, 0))
                , 0, 0);

            grid.Children.Add (
                SyncLabel ("5", LayoutOptions.Center)
                , 1, 0);

            grid.Children.Add (
                SyncLabel ("30", LayoutOptions.Center)
                , 2, 0);

            grid.Children.Add (
                SyncLabel ("60", LayoutOptions.EndAndExpand, new Thickness (0, 0, 5, 0))
                , 3, 0);

            return grid;
        }

        public FeedOverview()
        {
            var refreshButton = new Button {
            HorizontalOptions = LayoutOptions.FillAndExpand,
            VerticalOptions = LayoutOptions.Center,
            Text = "Refresh"
              };
              refreshButton.SetBinding(Button.CommandProperty, "RefreshCommand");

              var template = new DataTemplate(typeof(TextCell));
              // We can set data bindings to our supplied objects.
              template.SetBinding(TextCell.TextProperty, "Title");
              template.SetBinding(TextCell.DetailProperty, "Description");

              var listView = new ListView {ItemTemplate = template};
              listView.SetBinding(ListView.ItemsSourceProperty, "FeedItems");

              // Push the list view down below the status bar on iOS.
              Padding = new Thickness(10, Device.OnPlatform(20, 0, 0), 10, 5);
              Content = new Grid {
            BindingContext = new FeedReaderViewModel(),

            RowDefinitions = new RowDefinitionCollection {
             new RowDefinition { Height = new GridLength (1, GridUnitType.Star) },
             new RowDefinition { Height = new GridLength (0, GridUnitType.Auto) },

               },
            Children = {
               new ViewWithGridPosition(listView, 0,0),
               new ViewWithGridPosition(refreshButton, 1,0)
             },
              };
        }

			public BaseAsyncActivityTemplate() {
				// Adds the Content Presenter
				var contentPresenter = new ContentPresenter();
				Children.Add(contentPresenter, 0, 0);

				// The overlay that is presented when an Activity is Running
				var overlayGrid = new Grid { BackgroundColor = Color.FromHex("#CCCCCCCC") };
				overlayGrid.SetBinding(IsVisibleProperty, new TemplateBinding("IsActivityRunning"));

				var descriptionLabel = new Label { TextColor = Color.White };
				descriptionLabel.SetBinding(Label.TextProperty, new TemplateBinding("ActivityDescription"));

				var activityIndicator = new ActivityIndicator { Color = Color.White };
				activityIndicator.SetBinding(ActivityIndicator.IsRunningProperty, new TemplateBinding("IsActivityRunning"));

				// A layout to hold the Activity Indicator and Description
				var activityIndicatorLayout = new StackLayout {
					HorizontalOptions = LayoutOptions.Center,
					VerticalOptions = LayoutOptions.Center,
				};
				activityIndicatorLayout.Children.Add(activityIndicator);
				activityIndicatorLayout.Children.Add(descriptionLabel);

				// Finally add the indicator to the overlay and the overlay to the grid
				overlayGrid.Children.Add(activityIndicatorLayout, 0, 0);
				Children.Add(overlayGrid);
			}

		public GridPage5 ()
		{
			Padding = new Thickness (0, Device.OnPlatform (20, 0, 0), 0, 0);
			var grid = new Grid ();

			grid.Children.Add (
				new Image() {
					Source= Device.OnPlatform("[email protected]", "icon.png", "")
				}, 0, 0);

			grid.Children.Add (new Label () { Text = "40", BackgroundColor = Color.Yellow}, 0, 1);
			grid.Children.Add (new Label () { Text = "Remainder", BackgroundColor = Color.Pink}, 0, 2);

			grid.RowDefinitions.Add (new RowDefinition () 
				{
					Height = new GridLength(1, GridUnitType.Auto)
				});

			grid.RowDefinitions.Add (new RowDefinition () 
				{
					Height = new GridLength(40, GridUnitType.Absolute)
				});

			grid.RowDefinitions.Add (new RowDefinition () 
				{
					Height = new GridLength(1, GridUnitType.Star)
				});

			Content = grid;
		}

        public GridLayoutPage()
        {
            var layout = new StackLayout
            {
                Orientation = StackOrientation.Vertical,
                Padding = 20
            };

            var grid = new Grid
            {
                RowSpacing = 50
            };

            grid.Children.Add(new Label { Text = "This" }, 0, 0); // Left, First element
            grid.Children.Add(new Label { Text = "text is" }, 1, 0); // Right, First element
            grid.Children.Add(new Label { Text = "in a" }, 0, 1); // Left, Second element
            grid.Children.Add(new Label { Text = "grid!" }, 1, 1); // Right, Second element

            var gridButton = new Button { Text = "So is this Button!\nClick me." };
            gridButton.Clicked += delegate
            {
                gridButton.Text = string.Format("Thanks! {0} clicks.", count++);
            };

            layout.Children.Add(grid);
            layout.Children.Add (gridButton);
            Content = layout;
        }

    protected override void OnAppearing()
    {
      base.OnAppearing();

      if (BindingContext == null)
      {
        BindingContext = _project;

        var grid = new Grid();
        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
        grid.RowDefinitions.Add(new RowDefinition { Height = 150 });
        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
        grid.VerticalOptions = LayoutOptions.StartAndExpand;
        grid.Children.Add(new Label { Text = "Name" }, 0, 0);
        var editor = new Editor();
        editor.SetBinding(Editor.TextProperty, "Name");
        grid.Children.Add(editor, 1, 0);
        label.IsVisible = false;
        label.Text = "Error in value";
        label.TextColor = Color.Red;
        grid.Children.Add(label, 1, 1);
        grid.Children.Add(new Label { Text = "Description" }, 0, 2);
        grid.Children.Add(new Editor { Text = _project.Description }, 1, 2);
        grid.Children.Add(new Label { Text = "Started" }, 0, 3);
        grid.Children.Add(new Editor { Text = _project.Started.HasValue ? _project.Started.GetValueOrDefault().ToShortDateString() : string.Empty }, 1, 3);
        grid.Children.Add(new Label { Text = "Ended" }, 0, 4);
        grid.Children.Add(new Editor { Text = _project.Ended.HasValue ? _project.Ended.GetValueOrDefault().ToShortDateString() : string.Empty }, 1, 4);
        Content = grid;
      }
    }

        /// <summary>
        /// Constructor
        /// </summary>
        public HomePage()
        {
            BackgroundImage = "bg.png";
            var masterLayout = new StackLayout {
                Orientation = StackOrientation.Vertical,
                Spacing = 10
            };

            // Start Button
            var startButton = new Button { Text = "スタート", HorizontalOptions = LayoutOptions.Center };
            masterLayout.Children.Add(startButton);

            // Text followed by two auto expanding text areas
            var row = new StackLayout { Orientation = StackOrientation.Horizontal, Spacing = 10, Padding = new Thickness(10, 0, 10, 0) };
            row.Children.Add(new Label { Text = "範囲:" });
            masterLayout.Children.Add(row);
            var grid = new Grid();
            grid.HorizontalOptions = LayoutOptions.FillAndExpand;
            grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
            grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
            var lowerBoundField = new Entry();
            var upperBoundField = new Entry();
            grid.Children.Add(lowerBoundField, 0, 0);
            grid.Children.Add(upperBoundField, 1, 0);
            row.Children.Add(grid);

            // Data binding
            upperBoundField.SetBinding(Entry.TextProperty, new Binding("UpperBoundText", BindingMode.TwoWay));
            lowerBoundField.SetBinding(Entry.TextProperty, new Binding("LowerBoundText", BindingMode.TwoWay));
            startButton.SetBinding(Button.CommandProperty, new Binding("StartPracticeCommand", BindingMode.OneWay));

            Content = masterLayout;
        }

		public HomePageCS ()
		{
			label = new Label {
				Text = "Label Shadow Effect",
				FontAttributes = FontAttributes.Bold,
				HorizontalOptions = LayoutOptions.Center,
				VerticalOptions = LayoutOptions.CenterAndExpand
			};
			ShadowEffect.SetHasShadow (label, true);
			ShadowEffect.SetColor (label, Device.OnPlatform (Color.Black, Color.White, Color.White));
			ShadowEffect.SetRadius (label, 5);
			ShadowEffect.SetDistanceX (label, 5);
			ShadowEffect.SetDistanceY (label, 5);

			var button = new Button { Text = "Change Shadow Color", VerticalOptions = LayoutOptions.EndAndExpand };
			button.Clicked += OnButtonClicked;

			Content = new Grid { 
				Padding = new Thickness (0, 20, 0, 0),
				Children = {
					new Label {
						Text = "Effects Demo",
						FontAttributes = FontAttributes.Bold,
						HorizontalOptions = LayoutOptions.Center
					},
					label,
					button
				}
			};
		}

        public App()
        {
            _grid = new Grid {
                BackgroundColor = Color.Purple, HorizontalOptions = LayoutOptions.FillAndExpand, VerticalOptions = LayoutOptions.FillAndExpand
            };

            // THIS BOX VIEW DOES NOT SHOW UP IF YOU RE-SIZE THE ROW DEFINITION
            var boxView = new BoxView { BackgroundColor = Color.Blue, VerticalOptions = LayoutOptions.End };

            var button = new Button
            {
                Text = "button",
                BackgroundColor = Color.Lime,
                HorizontalOptions = LayoutOptions.Center,
                VerticalOptions = LayoutOptions.Center
            };

            button.Clicked += (sender, e) =>
            {
                _grid.RowDefinitions[1].Height = Math.Abs(_grid.RowDefinitions[1].Height.Value - 100) < double.Epsilon ?
                                                                                                new GridLength(0) : new GridLength(100);
            };

            Grid.SetRow(boxView, 1);

            _grid.RowDefinitions.Add(new RowDefinition() { Height = 100 });
            _grid.RowDefinitions.Add(new RowDefinition() { Height = 0 }); // CHANGE THIS TO 100 and it works fine

            _grid.Children.Add(boxView);
            _grid.Children.Add(button);

            MainPage = new ContentPage { Content = _grid };
        }

		public GridExample2 ()
		{
			Grid grid = new Grid
			{
				VerticalOptions = LayoutOptions.FillAndExpand,
                //RowSpacing = 20,
                //ColumnSpacing = 20,
				RowDefinitions = 
				{
					new RowDefinition { Height = GridLength.Auto },
					new RowDefinition { Height = new GridLength(200, GridUnitType.Absolute) },
					new RowDefinition { Height = GridLength.Auto },
					new RowDefinition { Height = GridLength.Auto }
				},
				ColumnDefinitions = 
				{
					new ColumnDefinition { Width = GridLength.Auto },
					new ColumnDefinition { Width = GridLength.Auto },
					new ColumnDefinition { Width = GridLength.Auto }
				}
			};

			grid.Children.Add(new Label
				{
					Text = "I'm at 0,0",
                    FontSize = 30,
                    FontAttributes = FontAttributes.Bold,
				}, 0, 0);

			grid.Children.Add(new Label
				{
					Text = "Me? 1, 1",
                    FontSize = 30,
                    FontAttributes = FontAttributes.Bold,
					TextColor = Color.Black,
					BackgroundColor = Color.Lime
				}, 1, 1);

			grid.Children.Add(new Label
				{
					Text = "2, 2 here",
                    FontSize = 25,
                    FontAttributes = FontAttributes.Bold,
					TextColor = Color.White,
					BackgroundColor = Color.Red
				}, 2, 2);

			grid.Children.Add(new Label
				{
					Text = "I'm at 0,3",
                    FontSize = 30,
                    FontAttributes = FontAttributes.Bold
				}, 0, 3);


			// Padding on edges and a bit more for iPhone top status bar
			this.Padding = new Thickness(10, Device.OnPlatform(20, 0, 0), 10, 5);

			this.Content = grid;
		}

		public FlowListViewInternalCell(FlowListView flowListView)
		{
			this.flowListView = flowListView;

			root = new Grid() {
				HorizontalOptions = LayoutOptions.FillAndExpand,
				VerticalOptions = LayoutOptions.FillAndExpand,
				RowSpacing = 0f,
				ColumnSpacing = 0f,
				Padding = 0f,
				RowDefinitions = new RowDefinitionCollection() {
					new RowDefinition() { Height = GridLength.Auto }
				},
				ColumnDefinitions = new ColumnDefinitionCollection()
			};

			for (int i = 0; i < this.flowListView.FlowColumnsDefinitions.Count; i++)
			{
				root.ColumnDefinitions.Add(new ColumnDefinition() {
					Width = new GridLength(1, GridUnitType.Star)
				});
			}

			View = root;
		}

		/// <summary>
		/// Initializes a new instance of the <see cref="DLToolkit.Forms.Controls.FlowListViewInternalCell"/> class.
		/// </summary>
		/// <param name="flowListViewRef">Flow list view reference.</param>
		public FlowListViewInternalCell(WeakReference<FlowListView> flowListViewRef)
		{
			_flowListViewRef = flowListViewRef;
			FlowListView flowListView = null;
			flowListViewRef.TryGetTarget(out flowListView);
			_useGridAsMainRoot = !flowListView.FlowUseAbsoluteLayoutInternally;

			if (!_useGridAsMainRoot)
			{
				_rootLayout = new AbsoluteLayout()
				{
					Padding = 0d,
					BackgroundColor = flowListView.FlowRowBackgroundColor,
				};
				View = _rootLayout;
			}
			else
			{
				_rootLayoutAuto = new Grid()
				{
					RowSpacing = 0d,
					ColumnSpacing = 0d,
					Padding = 0d,
					BackgroundColor = flowListView.FlowRowBackgroundColor,
				};
				View = _rootLayoutAuto;
			}

			_flowColumnTemplate = flowListView.FlowColumnTemplate;
			_desiredColumnCount = flowListView.DesiredColumnCount;
			_flowColumnExpand = flowListView.FlowColumnExpand;
		}

		public LeagueCardView(LeagueItem context)
		{
			BindingContext = context;

			Grid grid = new Grid {
				Padding = new Thickness(1,1,2,2),
				RowSpacing = 0,
				ColumnSpacing = 0,		
				BackgroundColor = Color.FromHex ("E3E3E3").MultiplyAlpha(0.5),
				RowDefinitions = {
					new RowDefinition { Height = new GridLength (100, GridUnitType.Absolute) }
				},
				ColumnDefinitions = {
					new ColumnDefinition { Width = new GridLength (4, GridUnitType.Absolute) },
					new ColumnDefinition {
						
					}
				}
			};

			grid.Children.Add (
				new FixtureCardStatusView ()
				,0,0);
			grid.Children.Add (new LeagueCardDetailsView (LeagueItem), 1, 0);

			var tgr = new TapGestureRecognizer { NumberOfTapsRequired = 1 };
			tgr.Tapped += (sender, args) => {
				OnCardClicked?.Invoke (LeagueItem);
			};
			grid.GestureRecognizers.Add (tgr);
			Content = grid;
		}