如何在 C# CodeBehind 级别访问到 WPF 绑定的绑定

Answer 1

就我想到的而言，我做了一个最简单的例子。
如果您不明白，请提出相关问题。
我会尽力回答。

using System;

namespace Core2022.Lexxy_B
{
    public class PersonDto
    {
        public int Id { get; }
        public string Name { get; }
        public int Age { get; }

        public PersonDto(int id, string name, int age)
        {
            if (Id < 0)
                throw new ArgumentOutOfRangeException(nameof(id));
            Id = id;
            if (string.IsNullOrWhiteSpace(name))
                throw new ArgumentNullException(nameof(name));
            Name = name;
            if (age < 0)
                throw new ArgumentOutOfRangeException(nameof(age));
            Age = age;
        }
        public PersonDto(string name, int age)
            : this(0, name, age)
        {
            Id = -1;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;

namespace Core2022.Lexxy_B
{
    public class PeopleModel
    {
        private readonly List<PersonDto> people = new List<PersonDto>()
        {
            new PersonDto(5, "Thomas", 25),
            new PersonDto(1, "Harry", 40),
        };
        public IReadOnlyList<PersonDto> GetPeople() => Array.AsReadOnly(people.ToArray());

        public void AddPerson(PersonDto person)
        {
            int id = people.LastOrDefault()?.Id ?? 0;
            do
            {
                id++;
            } while (people.Any(p => p.Id == id));

            person = new PersonDto(id, person.Name, person.Age);
            people.Add(person);
            AddedPerson?.Invoke(this, person);
        }

        public event EventHandler<PersonDto>? AddedPerson;
    }
}

namespace Core2022.Lexxy_B
{
    public class PersonVM
    {
        public string? Name { get; set; }
        public int Age { get; set; }
    }
}

using Simplified;
using System.Collections.ObjectModel;

namespace Core2022.Lexxy_B
{

    public class PeopleViewModel : ViewModelBase
    {
        private readonly PeopleModel model = new PeopleModel();
        private string _mode = "view";

        public ObservableCollection<PersonDto> People { get; } = new ObservableCollection<PersonDto>();
        public string ViewMode { get => _mode; private set => Set(ref _mode, value); }
        public PeopleViewModel()
        {
            foreach (var person in model.GetPeople())
            {
                People.Add(person);
            }

            model.AddedPerson += OnAddedPerson;
        }

        private void OnAddedPerson(object? sender, PersonDto newPerson)
        {
            People.Add(newPerson);
        }

        public RelayCommand AddPersonCommand => GetCommand<PersonVM>(AddPersonExecute, AddPersonCanExecute);
        private void AddPersonExecute(PersonVM person)
        {
            model.AddPerson(new PersonDto(person.Name ?? string.Empty, person.Age));
            ViewMode = "view";
        }

        private bool AddPersonCanExecute(PersonVM person)
        {
            return !string.IsNullOrWhiteSpace(person.Name) && person.Age >= 0;
        }
        public RelayCommand ExitAddingPersonCommand => GetCommand(() => ViewMode = "view");
        public RelayCommand BeginAddingPersonCommand => GetCommand(() => ViewMode = "add");
    }
}

<Window x:Class="Core2022.Lexxy_B.PeopleWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Core2022.Lexxy_B"
        mc:Ignorable="d"
        Title="PeopleWindow" Height="450" Width="800"
        DataContext="{DynamicResource vm}">
    <Window.Resources>
        <local:PeopleViewModel x:Key="vm"/>
    </Window.Resources>
    <UniformGrid Columns="2">
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <ListBox x:Name="lBox" ItemsSource="{Binding People}" DisplayMemberPath="Name"/>
            <Button Grid.Row="1" Content="Go to Add Person" Padding="15 5" Margin="5"
                    Command="{Binding BeginAddingPersonCommand}">
                <Button.Style>
                    <Style TargetType="Button">
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding ViewMode}" Value="add">
                                <Setter Property="IsEnabled" Value="False"/>
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </Button.Style>
            </Button>
        </Grid>
            <ContentControl x:Name="cp">
                <ContentControl.Style>
                    <Style TargetType="ContentControl">
                        <Style.Resources>
                            <DataTemplate x:Key="view.Template">
                                <local:PersonDetailsUC/>
                            </DataTemplate>
                            <DataTemplate x:Key="add.Template">
                                <local:AddPersonUC/>
                            </DataTemplate>
                        </Style.Resources>
                        <Setter Property="Content" Value="{Binding}"/>
                        <Setter Property="ContentTemplate" Value="{StaticResource add.Template}"/>
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding ViewMode}" Value="view">
                                <Setter Property="Content" Value="{Binding SelectedItem, ElementName=lBox}"/>
                                <Setter Property="ContentTemplate" Value="{StaticResource view.Template}"/>
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </ContentControl.Style>
            </ContentControl>
    </UniformGrid>
</Window>

<UserControl x:Class="Core2022.Lexxy_B.PersonDetailsUC"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:Core2022.Lexxy_B"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800"
             d:DataContext="{d:DesignInstance Type=local:PersonDto}">
    <UniformGrid Columns="1">
        <TextBlock Text="{Binding Id, StringFormat={}Id: {0}, UpdateSourceTrigger=PropertyChanged}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
        <TextBlock Text="{Binding Name, StringFormat={}Name: {0}}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
        <TextBlock Text="{Binding Age, StringFormat={}Age: {0}, UpdateSourceTrigger=PropertyChanged}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
    </UniformGrid>
</UserControl>

<UserControl x:Class="Core2022.Lexxy_B.AddPersonUC"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:Core2022.Lexxy_B"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <d:UserControl.DataContext>
        <local:PeopleViewModel/>
    </d:UserControl.DataContext>
    <UserControl.Resources>
        <local:PersonVM x:Key="person"/>
    </UserControl.Resources>
    <UniformGrid Columns="2">
        <TextBlock Text="Name" VerticalAlignment="Center" HorizontalAlignment="Center"/>
        <TextBox Text="{Binding Name, Source={StaticResource person}}" VerticalAlignment="Center" Margin="10"/>
        <TextBlock Text="Age" VerticalAlignment="Center" HorizontalAlignment="Center"/>
        <TextBox Text="{Binding Age, Source={StaticResource person}}" VerticalAlignment="Center" Margin="10"/>
        <Button Content="Add" Padding="15 5"  VerticalAlignment="Center" HorizontalAlignment="Center"
                Command="{Binding AddPersonCommand}"
                CommandParameter="{Binding Mode=OneWay, Source={StaticResource person}}"/>
        <Button Content="Exit" Padding="15 5"  VerticalAlignment="Center" HorizontalAlignment="Center"
                Command="{Binding ExitAddingPersonCommand}"/>
    </UniformGrid>
</UserControl>

由于存储库而添加。

更改 Word.cs 的第 33 行，因为我无法分配打开到 word 模板的相对路径

通过相对可执行程序集给出的路径获取文件全名的实现示例。

1. 项目资源中的文件本身必须具有“内容”-“复制...”属性。我有一个俄罗斯化的工作室，所以截图是俄语的。
   “bin”文件夹不能包含在项目中，否则，它的所有内容也将包含在程序集中。
   
   这是将相对路径转换为绝对路径的代码：

           public static readonly string ApplicationFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
           public const string TestRelativeNameFile = @"Resources\Word\Test.docx";
           public static readonly string TestFullNameFile = Path.Combine(ApplicationFolder, TestRelativeNameFile);
           public static void GenerateLocalSolution()
           {
               try
               {
                   WordApp = new Microsoft.Office.Interop.Word.Application();
                   TestApp = WordApp.Documents.Open(TestFullNameFile);
               }