我是Xamarin的新手。我有一个带有选项卡式页面的Xamarin forrms应用程序，它有3个选项卡，每个选项卡都有一个数据输入表单，所有数据输入表单都应传递给webapi DTO实体类。单击第三个选项卡上的提交按钮时，如何从3个选项卡的3个页面中收集所有数据并发布数据。实现此目的的最佳方法是什么？我的代码在下面
模型中的DTO FamilyTreeMaster
using System;
using System.Collections.Generic;
using System.Text;
namespace FamilyTreeApp.Models
{
public class DTOFamilyTreeMaster
{
public string Title { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public Nullable<int> Age { get; set; }
public string Profession { get; set; }
public string FatherFirstName { get; set; }
public string FatherLastName { get; set; }
public string MotherFirstName { get; set; }
public string MotherLastName { get; set; }
public string Address1 { get; set; }
public string Address2 { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Zip { get; set; }
public string Country { get; set; }
public string Phone { get; set; }
public string Spouse1_FirstName { get; set; }
public string Spouse1_LastName { get; set; }
public string Spouse2_FirstName { get; set; }
public string Spouse2_LastName { get; set; }
public string Spouse3_FirstName { get; set; }
public string Spouse3_LastName { get; set; }
public string Spouse4_FirstName { get; set; }
public string Spouse4_LastName { get; set; }
public string Spouse5_FirstName { get; set; }
public string Spouse5_LastName { get; set; }
public string Son1_FirstName { get; set; }
public string Son1_LastName { get; set; }
public string Son2_FirstName { get; set; }
public string Son2_LastName { get; set; }
public string Son3_FirstName { get; set; }
public string Son3_LastName { get; set; }
public string Son4_FirstName { get; set; }
public string Son4_LastName { get; set; }
public string Son5_FirstName { get; set; }
public string Son5_LastName { get; set; }
public string Son6_FirstName { get; set; }
public string Son6_LastName { get; set; }
public string Son7_FirstName { get; set; }
public string Son7_LastName { get; set; }
public string Son8_FirstName { get; set; }
public string Son8_LastName { get; set; }
public string Son9_FirstName { get; set; }
public string Son9_LastName { get; set; }
public string Son10_FirstName { get; set; }
public string Son10_LastName { get; set; }
public string Daughter1_FirstName { get; set; }
public string Daughter1_LastName { get; set; }
public string Daughter2_FirstName { get; set; }
public string Daughter2_LastName { get; set; }
public string Daughter3_FirstName { get; set; }
public string Daughter3_LastName { get; set; }
public string Daughter4_FirstName { get; set; }
public string Daughter4_LastName { get; set; }
public string Daughter5_FirstName { get; set; }
public string Daughter5_LastName { get; set; }
public string Daughter6_FirstName { get; set; }
public string Daughter6_LastName { get; set; }
public string Daughter7_FirstName { get; set; }
public string Daughter7_LastName { get; set; }
public string Daughter8_FirstName { get; set; }
public string Daughter8_LastName { get; set; }
public string Daughter9_FirstName { get; set; }
public string Daughter9_LastName { get; set; }
public string Daughter10_FirstName { get; set; }
public string Daughter10_LastName { get; set; }
public Nullable<int> MyPosition { get; set; }
public Nullable<int> MyParentPosition { get; set; }
}
}
视图中带标签的页面
UserInfoTabbedPage
<?xml version="1.0" encoding="utf-8" ?>
<TabbedPage Visual="Material"
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:local="clr-namespace:FamilyTreeApp.Pages"
x:Class="FamilyTreeApp.Pages.UserInfoTabbedPage">
<local:UserTabbedPage Title ="User"
Icon ="user.png"/>
<local:UserSpousePage Title ="Family"
Icon ="sharp_group_add_black_18.png"/>
<local:UserChildrenTabbedPage class="material-icons" Title ="User"
Icon ="user.png"/>
</TabbedPage>
UserTabbedPage
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage Visual="Material"
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="FamilyTreeApp.Pages.UserTabbedPage">
<TableView Intent="Form">
<TableRoot>
<TableSection Title="Basic">
<EntryCell Placeholder="Title" Text="{Binding Title}"></EntryCell>
<EntryCell Placeholder="First Name" Text="{Binding FirstName}"></EntryCell>
<EntryCell Placeholder="Last Name" Text="{Binding LastName}"></EntryCell>
<EntryCell Placeholder="Nick Name" Text="{Binding NickName}"></EntryCell>
<EntryCell Placeholder="Age" Text="{Binding Age}"></EntryCell>
<EntryCell Placeholder="Profession" Text="{Binding Profession}"></EntryCell>
</TableSection>
<TableSection Title="Contact">
<EntryCell Placeholder="Address 1" Text="{Binding Address1}"></EntryCell>
<EntryCell Placeholder="Address 2" Text="{Binding Address2}"></EntryCell>
<EntryCell Placeholder="City" Text="{Binding City}"></EntryCell>
<EntryCell Placeholder="State" Text="{Binding State}"></EntryCell>
<EntryCell Placeholder="Zip" Text="{Binding Zip}" Keyboard="Numeric"></EntryCell>
<EntryCell Placeholder="Country" Text="{Binding Country}"></EntryCell>
<EntryCell Placeholder="Phone" Text="{Binding Phone}" Keyboard="Numeric"></EntryCell>
</TableSection>
</TableRoot>
</TableView>
</ContentPage>
UserSpousePage
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage Visual="Material"
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="FamilyTreeApp.Pages.UserSpousePage"
xmlns:ic="clr-namespace:ImageCircle.Forms.Plugin.Abstractions;assembly=ImageCircle.Forms.Plugin"
>
<TableView Intent="Form">
<TableRoot>
<TableSection Title="Parents">
<EntryCell Placeholder="Father First Name" Text="{Binding FatherFirstName}"></EntryCell>
<EntryCell Placeholder="Father Last Name" Text="{Binding FatherLastName}"></EntryCell>
<EntryCell Placeholder="Mother First Name" Text="{Binding MotherFirstName}"></EntryCell>
<EntryCell Placeholder="Mother Last Name" Text="{Binding MotherLastName}"></EntryCell>
</TableSection>
<TableSection x:Name="Spouses" Title="Spouse(s)">
<ViewCell>
<StackLayout>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="20"/>
<ColumnDefinition Width="2*"/>
</Grid.ColumnDefinitions>
<Label VerticalOptions="Center" HorizontalOptions="Center" Grid.Row="0" Grid.Column="0"
Text="{Binding Source={x:Reference stepper},Path=Value}"/>
<Stepper Grid.Row="0" Grid.Column="1" x:Name="stepper" Increment="1" Maximum="5" Minimum="1" >
</Stepper>
<ic:CircleImage Grid.Row="0" Grid.Column="2" Source="sharp_group_add_black_18.png">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="OnStepperValueChanged" />
</Image.GestureRecognizers>
</ic:CircleImage>
</Grid>
</StackLayout>
</ViewCell>
</TableSection>
</TableRoot>
</TableView>
</ContentPage>
UserSpousePage.xaml.cs
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace FamilyTreeApp.Pages
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class UserSpousePage : ContentPage
{
public int countSpouses = 1;
public UserSpousePage()
{
InitializeComponent();
//CreateEntryCells(10);
}
private void CreateEntryCells(int numCell, string textToBeCreated)
{
for (int i = countSpouses; i<= numCell; i++)
{
EntryCell entInput = new EntryCell
{
Placeholder = textToBeCreated + countSpouses
};
string txt = "{Binding" + textToBeCreated + countSpouses + "_FirstName}";
//string txtLastName = "{Binding" + textToBeCreated + countSpouses + "_LastName}";
entInput.SetBinding(EntryCell.TextProperty, txt);
Spouses.Add(entInput);
++countSpouses;
}
}
private void OnStepperValueChanged(object sender, System.EventArgs e)
{
CreateEntryCells(int.Parse(stepper.Value.ToString()),"Spouse Full Name");
}
}
}
UserChildrenTabbedPage
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage Visual="Material" xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:ic="clr-namespace:ImageCircle.Forms.Plugin.Abstractions;assembly=ImageCircle.Forms.Plugin"
x:Class="FamilyTreeApp.Pages.UserChildrenTabbedPage">
<AbsoluteLayout HorizontalOptions="FillAndExpand"
VerticalOptions="FillAndExpand">
<TableView Intent="Form">
<TableRoot>
<TableSection x:Name="Sons" Title="Son(s)">
<ViewCell>
<StackLayout>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="20"/>
<ColumnDefinition Width="2*"/>
</Grid.ColumnDefinitions>
<Label VerticalOptions="Center" HorizontalOptions="Center" Grid.Row="0" Grid.Column="0" Text="{Binding Source={x:Reference stepperSon},Path=Value}"/>
<Stepper Grid.Row="0" Grid.Column="1" x:Name="stepperSon" Increment="1" Maximum="10" Minimum="1" >
</Stepper>
<ic:CircleImage Grid.Row="0" Grid.Column="2" Source="sharp_group_add_black_18.png">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="OnstepperSonValueChanged" />
</Image.GestureRecognizers>
</ic:CircleImage>
</Grid>
</StackLayout>
</ViewCell>
</TableSection>
<TableSection x:Name="Daughters" Title="Daughter(s)">
<ViewCell>
<StackLayout>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="20"/>
<ColumnDefinition Width="2*"/>
</Grid.ColumnDefinitions>
<Label VerticalOptions="Center" HorizontalOptions="Center" Grid.Row="0" Grid.Column="0" Text="{Binding Source={x:Reference stepperDaughter},Path=Value}"/>
<Stepper Grid.Row="0" Grid.Column="1" x:Name="stepperDaughter" Increment="1" Maximum="10" Minimum="1" >
</Stepper>
<ic:CircleImage Grid.Row="0" Grid.Column="2" Source="sharp_group_add_black_18.png">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="OnstepperDaughterValueChanged" />
</Image.GestureRecognizers>
</ic:CircleImage>
</Grid>
</StackLayout>
</ViewCell>
</TableSection>
</TableRoot>
</TableView>
<StackLayout
AbsoluteLayout.LayoutFlags="All"
AbsoluteLayout.LayoutBounds="1,1,0.25,0.25">
<StackLayout HorizontalOptions="End" VerticalOptions="End" Margin="0,0,0,0">
<Button Clicked="OnSubmit" Text="Submit" HorizontalOptions="End"
></Button>
</StackLayout>
</StackLayout>
</AbsoluteLayout>
</ContentPage>
UserChildrenTabbedPage.xaml.cs
using FamilyTreeApp.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace FamilyTreeApp.Pages
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class UserChildrenTabbedPage : ContentPage
{
public int countSons = 1;
public int countDaughters = 1;
public UserChildrenTabbedPage()
{
InitializeComponent();
}
private void CreateEntryCells(int numCell, string textToBeCreated)
{
if (textToBeCreated.ToLower().Contains("son"))
{
for (int i = countSons; i<= numCell; i++)
{
EntryCell entInput = new EntryCell
{
Placeholder = textToBeCreated + countSons
//Text = "{Binding Spouse' + 1 + 'FirstName}"
//HorizontalOptions = LayoutOptions.FillAndExpand
};
string txt = "{Binding" + textToBeCreated + countSons + "_FirstName}";
entInput.SetBinding(EntryCell.TextProperty, txt);
Sons.Add(entInput);
++countSons;
}
}
else
{
for (int i = countDaughters; i <= numCell; i++)
{
EntryCell entInput = new EntryCell
{
Placeholder = textToBeCreated + countDaughters
//Text = "{Binding Spouse' + 1 + 'FirstName}"
//HorizontalOptions = LayoutOptions.FillAndExpand
};
string txt = "{Binding" + textToBeCreated + countDaughters + "_FirstName}";
entInput.SetBinding(EntryCell.TextProperty, txt);
Daughters.Add(entInput);
++countDaughters;
}
}
}
private void OnstepperDaughterValueChanged(object sender, EventArgs e)
{
CreateEntryCells(int.Parse(stepperDaughter.Value.ToString()), "Daughter");
}
private void OnstepperSonValueChanged(object sender, EventArgs e)
{
CreateEntryCells(int.Parse(stepperSon.Value.ToString()), "Son");
}
private void OnSubmit(object sender, EventArgs e)
{
}
}
}
。如何通过DTO对象将所有选项卡式数据发布到Web api？
答案 0 :(得分：0)
您可以为Data Manager定义 Singleton类。
public class DataManager
{
private static DataManager instance;
// save data of three forms，or you could define them as any other type
public Dictionary<string, string> Forms1 { get; set; }
public Dictionary<string, string> Forms2 { get; set; }
public Dictionary<string, string> Forms3 { get; set; }
private DataManager() { }
public static DataManager Instance
{
get
{
if (instance == null)
{
instance = new DataManager();
}
return instance;
}
}
要在第一页和第二页中保存数据
DataManager.Instance.Forms1 = new Dictionary<string, string>();
for (int i = countDaughters; i <= numCell; i++)
{
DataManager.Instance.Forms1.Add("xxx","xxx");
}
var Form1 = DataManager.Instance.Forms1 ;