C# Shell在forms app中的新XAMRA文件中的行为不符合预期
为什么当我使用时会松开外壳菜单项,即汉堡包菜单C# Shell在forms app中的新XAMRA文件中的行为不符合预期,c#,xaml,xamarin.forms,xamarin.forms.shell,C#,Xaml,Xamarin.forms,Xamarin.forms.shell,为什么当我使用时会松开外壳菜单项,即汉堡包菜单 private async void btnAddBill_Clicked(object sender, EventArgs e) { await Shell.Current.GoToAsync("NewBillItemPage"); } 你会在这个屏幕上看到我有菜单 但是,一旦我调用上面的命令,当我单击add时,它会松开菜单;当我单击back按钮时,它会恢复菜单,但它不会给我留下 因为我也用这个移回到了列表
private async void btnAddBill_Clicked(object sender, EventArgs e)
{
await Shell.Current.GoToAsync("NewBillItemPage");
}
你会在这个屏幕上看到我有菜单
但是,一旦我调用上面的命令,当我单击add时,它会松开菜单;当我单击back按钮时,它会恢复菜单,但它不会给我留下
因为我也用这个移回到了列表页面
private async void btnCancel_Clicked(object sender, EventArgs e)
{
await Shell.Current.GoToAsync("BillsPage");
}
如何在整个导航体验中保留菜单似乎shell在5.0.0.2012中有点破损
只有在AppShell中更改的代码是
<FlyoutItem Title="Bills" Icon="icon_feed.png">
<ShellContent Route="Bills" ContentTemplate="{DataTemplate local:BillsPage}" />
</FlyoutItem>
<FlyoutItem Title="About" Icon="icon_about.png">
<ShellContent Route="AboutPage" ContentTemplate="{DataTemplate local:AboutPage}" />
</FlyoutItem>
编辑3
“新建账单项目”页面位于账单主列表页面上的工具栏项目之外
<ContentPage.ToolbarItems>
<ToolbarItem Text="Add" Clicked="btnAddBill_Clicked" x:Name="btnAddBill" />
<ToolbarItem Order="Primary" IconImageSource="" x:Name="btnclearTestData" Clicked="btnclearTestData_Clicked" />
</ContentPage.ToolbarItems>
上面的代码是从添加工具栏的btnAddBill_Clicked事件调用的
这是NewBillTempage xaml的代码
<?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="BillManager.Views.NewBillItemPage"
Shell.PresentationMode="ModalAnimated"
Title="New Item"
xmlns:combobox="clr-namespace:Syncfusion.XForms.ComboBox;assembly=Syncfusion.SfComboBox.XForms"
xmlns:syncfusion="clr-namespace:Syncfusion.XForms.Pickers;assembly=Syncfusion.SfPicker.XForms"
xmlns:ios="clr-namespace:Xamarin.Forms.PlatformConfiguration.iOSSpecific;assembly=Xamarin.Forms.Core"
ios:Page.UseSafeArea="true">
<ContentPage.Content>
<StackLayout Spacing="3" Padding="15">
<Entry x:Name="txtDescription" FontSize="Medium" Placeholder="Bill Name"/>
<Grid RowDefinitions="30, 35">
<DatePicker x:Name="billStartDate"
Grid.Row="1"
Margin="0, -35, 0, 0"
VerticalOptions="Center"
HorizontalOptions="Start"
WidthRequest="200"
Format="dd-MMM-yyyy"
TextTransform="Uppercase"
FontSize="Body" />
<Label Text="Start Date"
Grid.Row="0"
Margin="12, 10, 0, 0"
/>
</Grid>
<Grid RowDefinitions="30, 35">
<DatePicker x:Name="billEndDate"
Grid.Row="1"
Margin="0, -35, 0, 0"
VerticalOptions="Center"
HorizontalOptions="Start"
WidthRequest="200"
Format="dd-MMM-yyyy"
TextTransform="Uppercase"
FontSize="Body" />
<Label Text="End Date"
Grid.Row="0"
Margin="12, 10, 0, 0"
/>
</Grid>
<Label Text="Repeat Bill:"
/>
<combobox:SfComboBox x:Name="cboOccourances" HeightRequest="40" DataSource="{Binding EmployeeCollection}" DisplayMemberPath="Description" SelectedValuePath="Type">
</combobox:SfComboBox>
<Editor AutoSize="TextChanges" FontSize="Medium" Margin="0" />
<StackLayout Orientation="Horizontal">
<Button Text="Cancel" x:Name="btnCancel" Clicked="btnCancel_Clicked" HorizontalOptions="FillAndExpand"></Button>
<Button Text="Save" x:Name="btnSave" Clicked="btnSave_Clicked" HorizontalOptions="FillAndExpand"></Button>
</StackLayout>
</StackLayout>
</ContentPage.Content>
现在代码隐藏了
public partial class NewBillItemPage : ContentPage
{
public Bills Item { get; set; }
private BillManagerDB db;
public NewBillItemPage()
{
InitializeComponent();
BindingContext = new BillDetailViewModel();
db = new BillManagerDB();
Setup();
}
private async void btnSave_Clicked(object sender, EventArgs e)
{
Bills bill = new Bills();
bill.Description = txtDescription.Text;
bill.Startdate = billStartDate.Date;
bill.EndDate = billEndDate.Date;
bill.isActive = true;
bill.isDeleted = false;
await db.SaveBillItem(bill);
await DisplayAlert("Bill Saved", "Your build details have been saved.", "OK");
await Shell.Current.GoToAsync("BillsPage");
}
private async void btnCancel_Clicked(object sender, EventArgs e)
{
await Shell.Current.GoToAsync("BillsPage");
}
public void Setup()
{
List<BillOccuranceTypeViewModel> billOccuranceType = new List<BillOccuranceTypeViewModel>();
billOccuranceType = new List<BillOccuranceTypeViewModel>()
{
new BillOccuranceTypeViewModel {Description="Once",Type=1},
new BillOccuranceTypeViewModel { Description="Never",Type=2},
new BillOccuranceTypeViewModel { Description="Weekly",Type=3},
new BillOccuranceTypeViewModel { Description="Monthly",Type=4},
new BillOccuranceTypeViewModel { Description="Yearly",Type=5},
new BillOccuranceTypeViewModel { Description="Quartley",Type=6},
};
cboOccourances.DataSource = billOccuranceType;
}
}
}
public分部类NewBillItemPage:ContentPage
{
公共票据项目{get;set;}
私人BillManagerDB;
公共图书馆()
{
初始化组件();
BindingContext=新的BillDetailViewModel();
db=新的BillManagerDB();
设置();
}
私有异步无效btnSave_已单击(对象发送方,事件参数e)
{
账单=新账单();
bill.Description=txtDescription.Text;
bill.Startdate=billStartDate.Date;
bill.EndDate=billEndDate.Date;
bill.isActive=true;
bill.isDeleted=false;
等待db.SaveBillItem(账单);
等待DisplayAlert(“账单已保存”,“构建详细信息已保存”,“确定”);
等待Shell.Current.GoToAsync(“BillsPage”);
}
私有异步无效btnCancel_已单击(对象发送方,事件参数e)
{
等待Shell.Current.GoToAsync(“BillsPage”);
}
公共作废设置()
{
List billOccuranceType=新列表();
billOccuranceType=新列表()
{
新BillOccuranceTypeViewModel{Description=“Once”,Type=1},
新BillOccuranceTypeViewModel{Description=“Never”,Type=2},
新BillOccuranceTypeViewModel{Description=“Weekly”,Type=3},
新BillOccuranceTypeViewModel{Description=“Monthly”,Type=4},
新BillOccuranceTypeViewModel{Description=“Yearly”,Type=5},
新BillOccuranceTypeViewModel{Description=“Quartley”,Type=6},
};
cbooccurances.DataSource=billOccuranceType;
}
}
}
对于其他陷入这一困境的人来说,答案很简单,就是双点标记
await Shell.Current.GoToAsync("..");
一位所谓的微软金融时报工作人员的上述回答是可笑的,根本不是正确的方法。您从哪个页面呼叫
wait Shell.Current.GoToAsync(“NewBillItemPage”)代码>?您的账单页似乎影响了某些Shell属性,您能否共享该页的相关代码?或者用另一个空白或不同内容的页面进行测试?你能澄清你的第一句话吗?NewBillTempage和BillsPage之间的关系是什么?它的母版页是一个列表,新的母版页正在添加一个项目@CfunPlease请参见编辑3
await Shell.Current.GoToAsync("..");