如何在C＃中开发一部分xamarin表单应用界面，并在xaml中开发其他部分？

Question

你好我工作的一个xamarin形式的应用程序，拥有C＃编写的，我尝试使用添加底部导航栏的网格界面XAML

这里是我的C＃代码：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 

using Xamarin.Forms; 

namespace App.Pages 
{ 
    public partial class HomePage : ContentPage 
    { 
     public HomePage() 
     { 
      InitializeComponent(); 

      var g = new Grid { }; 

      //Image 1 setup 
      var Image1 = new Image 
      { 
       HorizontalOptions = LayoutOptions.StartAndExpand, 
       Source = ImageSource.FromFile("event.png"), 
       WidthRequest = 200, 
       HeightRequest = 200, 
      }; 
      //Image 1 tapped event 
      var tapGestureRecognizer1 = new TapGestureRecognizer(); 
      tapGestureRecognizer1.Tapped += TapGestureRecognizer1_Tapped; 
      Image1.GestureRecognizers.Add(tapGestureRecognizer1); 
      //Image 1 tapped event 
      g.Children.Add(Image1, 0, 0); 


      //Image 2 setup 
      var Image2 = new Image 
      { 
       HorizontalOptions = LayoutOptions.StartAndExpand, 
       Source = ImageSource.FromFile("schedule.png"), 
       WidthRequest = 200, 
       HeightRequest = 200, 
      }; 
      //Image 2 tapped event 
      var tapGestureRecognizer2 = new TapGestureRecognizer(); 
      tapGestureRecognizer2.Tapped += TapGestureRecognizer2_Tapped; 
      Image2.GestureRecognizers.Add(tapGestureRecognizer2); 
      //Image 2 tapped event 
      g.Children.Add(Image2, 1, 0); 


      //Image 3 setup 
      var Image3 = new Image 
      { 
       HorizontalOptions = LayoutOptions.StartAndExpand, 
       Source = ImageSource.FromFile("icon.png"), 
       WidthRequest = 200, 
       HeightRequest = 200, 
      }; 
      //Image 3 tapped event 
      var tapGestureRecognizer3 = new TapGestureRecognizer(); 
      tapGestureRecognizer3.Tapped += TapGestureRecognizer3_Tapped; 
      Image3.GestureRecognizers.Add(tapGestureRecognizer3); 
      //Image 3 tapped event 
      g.Children.Add(Image3, 0, 1); 


      //Image 4 setup 
      var Image4 = new Image 
      { 
       HorizontalOptions = LayoutOptions.StartAndExpand, 
       Source = ImageSource.FromFile("icon.png"), 
       WidthRequest = 200, 
       HeightRequest = 200, 
      }; 
      //Image 4 tapped event 
      var tapGestureRecognizer4 = new TapGestureRecognizer(); 
      tapGestureRecognizer4.Tapped += TapGestureRecognizer4_Tapped; 
      Image4.GestureRecognizers.Add(tapGestureRecognizer4); 
      //Image 4 tapped event 
      g.Children.Add(Image4, 1, 1); 


      //Image 5setup 
      var Image5 = new Image 
      { 
       HorizontalOptions = LayoutOptions.StartAndExpand, 
       Source = ImageSource.FromFile("icon.png"), 
       WidthRequest = 200, 
       HeightRequest = 200, 
      }; 
      //Image 5 tapped event 
      var tapGestureRecognizer5 = new TapGestureRecognizer(); 
      tapGestureRecognizer5.Tapped += TapGestureRecognizer5_Tapped; 
      Image5.GestureRecognizers.Add(tapGestureRecognizer5); 
      //Image 5 tapped event 
      g.Children.Add(Image5, 0, 2); 


      //Image 6 setup 
      var Image6 = new Image 
      { 
       HorizontalOptions = LayoutOptions.StartAndExpand, 
       Source = ImageSource.FromFile("icon.png"), 
       WidthRequest = 200, 
       HeightRequest = 200, 
      }; 
      //Image 6 tapped event 
      var tapGestureRecognizer6 = new TapGestureRecognizer(); 
      tapGestureRecognizer6.Tapped += TapGestureRecognizer6_Tapped; 
      Image6.GestureRecognizers.Add(tapGestureRecognizer6); 
      //Image 6 tapped event 
      g.Children.Add(Image6, 1, 2); 

      // Accomodate iPhone status bar. 
      this.Padding = new Thickness(0, Device.OnPlatform(20, 0, 0), 0, 0); 

      // Build the page. 
      this.Content = g; 

     } 


     //This is the code that takes you to page1 
     private void TapGestureRecognizer1_Tapped(object sender, EventArgs e) 
     { 
      Navigation.PushModalAsync(new Page1()); 

     } 

     //This is the code that takes you to page2 

     private void TapGestureRecognizer2_Tapped(object sender, EventArgs e) 
     { 
      Navigation.PushModalAsync(new Page2()); 
     } 
     private void TapGestureRecognizer3_Tapped(object sender, EventArgs e) 
     { 
      this.DisplayAlert("Image Tapped", "Image 3 tapped, push navigation here.", "Dismiss"); 
     } 
     private void TapGestureRecognizer4_Tapped(object sender, EventArgs e) 
     { 
      this.DisplayAlert("Image Tapped", "Image 4 tapped, push navigation here.", "Dismiss"); 
     } 
     private void TapGestureRecognizer5_Tapped(object sender, EventArgs e) 
     { 
      this.DisplayAlert("Image Tapped", "Image 5 tapped, push navigation here.", "Dismiss"); 
     } 
     private void TapGestureRecognizer6_Tapped(object sender, EventArgs e) 
     { 
      this.DisplayAlert("Image Tapped", "Image 6 tapped, push navigation here.", "Dismiss"); 
     } 

     //Code to take you to the homepage 
     public void Home(object sender, EventArgs e) 
     { 

      Navigation.PushAsync(new HomePage()); 






     } 


     //Code to take you to the MapPage 
     public void Map(object sender, EventArgs e) 
     { 

      Navigation.PushAsync(new MapPage()); 






     } 


     //Code to take you to the SponsorsPage 
     public void sponsors(object sender, EventArgs e) 
     { 

      Navigation.PushAsync(new SponsorsPage()); 






     } 
    } 


} 

和这里的XAML当我运行的代码，它只是显示了C＃代码如何得到的导航栏工作的任何想法

<?xml version="1.0" encoding="utf-8" ?> 
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
      xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
      x:Class="App.Pages.HomePage" 
       xmlns:flv="clr-namespace:DLToolkit.Forms.Controls;assembly=DLToolkit.Forms.Controls.FlowListView" 
      BackgroundColor="#8f9e1c"> 
    <Grid RowSpacing="0"> 
    <Grid.RowDefinitions> 
     <RowDefinition Height="*" /> 
     <RowDefinition Height="Auto" /> 
    </Grid.RowDefinitions> 

    <ContentPage.Content> 
     <Grid Grid.Row="1" BackgroundColor="#8f9e1c"> 
     <StackLayout Orientation="Horizontal" MinimumHeightRequest="30" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand"> 
      <Button Image="icon.png" HorizontalOptions="StartAndExpand" BorderColor="Transparent" BackgroundColor="Transparent" Clicked="Home" /> 
      <Button Image="icon.png" HorizontalOptions="CenterAndExpand" BackgroundColor="Transparent" Clicked="Map" /> 
      <Button Image="icon.png" HorizontalOptions="EndAndExpand" BorderColor="Transparent" BackgroundColor="Transparent" Clicked="sponsors" /> 
     </StackLayout> 
     </Grid> 
    </ContentPage.Content> 
    </Grid> 
</ContentPage> 

：我试图添加导航栏到网页？

任何帮助将是惊人的！

在此先感谢

Answer 1

这只是覆盖现有的所有页面内容

this.Content = g; 

你需要指定一个名称为XAML网格，在C＃代码是指它的名字，而不是仅仅创造新网格

<Grid RowSpacing="0" x:Name="myGrid"> 

myGrid.Children.Add(Image1, 0, 0); 

不这样做

var g = new Grid { }; 

或本

this.Content = g;