回答編集履歴
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見直しキャンペーン中
test
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> これを特定のセルを指定することは可能でしょうか？
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`GridViewColumn.CellTemplate`で変更することになります。
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雑で申し訳ないですが、色の変更までの例です。
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```x
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```xml
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<Window
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x:Class="Questions248072.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Title="MainWindow"
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Width="800"
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Height="450">
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<Grid>
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<ListView ItemsSource="{Binding Users}">
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<ListView.Resources>
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<ContextMenu x:Key="ContextMenu">
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<MenuItem
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Click="MenuItem_Click"
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Header="通常"
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IsChecked="{Binding IsWhite, Mode=OneWay}" />
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<MenuItem
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Click="MenuItem_Click"
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Header="黄色"
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IsChecked="{Binding IsYellow, Mode=OneWay}" />
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<MenuItem
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Click="MenuItem_Click"
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Header="赤"
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IsChecked="{Binding IsRed, Mode=OneWay}" />
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</ContextMenu>
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</ListView.Resources>
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<ListView.ItemContainerStyle>
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<Style TargetType="{x:Type ListViewItem}">
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<Setter Property="HorizontalContentAlignment" Value="Stretch" />
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<Setter Property="ContextMenu" Value="{StaticResource ContextMenu}" />
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</Style>
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</ListView.ItemContainerStyle>
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<ListView.View>
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<GridView>
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<GridViewColumn
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Width="170"
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DisplayMemberBinding="{Binding No}"
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Header="No" />
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<Conte
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<GridViewColumn Width="80" Header="Name">
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<MenuItem
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Click="MenuItem_Click"
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Header="通常"
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IsChecked="{Binding IsWhite, Mode=OneWay}" />
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<MenuItem
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Click="MenuItem_Click"
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Header="黄色"
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IsChecked="{Binding IsYellow, Mode=OneWay}" />
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<MenuItem
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Click="MenuItem_Click"
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Header="赤"
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IsChecked="{Binding IsRed, Mode=OneWay}" />
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</ContextMenu>
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</ListView.Resources>
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<
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<GridViewColumn.CellTemplate>
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<DataTemplate>
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<
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<Border x:Name="bg" Margin="-6,0,-6,0">
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<Setter Property="HorizontalContentAlignment" Value="Stretch" />
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<
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<TextBlock Margin="6,0,6,0" Text="{Binding Name}" />
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</
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</Border>
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<DataTemplate.Triggers>
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<DataTrigger Binding="{Binding BkColor}" Value="Red">
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<Setter TargetName="bg" Property="Background" Value="Red" />
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</DataTrigger>
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<DataTrigger Binding="{Binding BkColor}" Value="Yellow">
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<Setter TargetName="bg" Property="Background" Value="#FE0" />
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</DataTrigger>
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</DataTemplate.Triggers>
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</DataTemplate>
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</
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</GridViewColumn.CellTemplate>
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<ListView.View>
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<GridView>
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</GridViewColumn>
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<GridViewColumn
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Width="170"
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DisplayMemberBinding="{Binding No}"
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Header="No" />
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<GridViewColumn Width="80" Header="Name">
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<GridViewColumn.CellTemplate>
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<DataTemplate>
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<Border x:Name="bg" Margin="-6,0,-6,0">
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<TextBlock Margin="6,0,6,0" Text="{Binding Name}" />
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</Border>
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<DataTemplate.Triggers>
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<DataTrigger Binding="{Binding BkColor}" Value="Red">
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<Setter TargetName="bg" Property="Background" Value="Red" />
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</DataTrigger>
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<DataTrigger Binding="{Binding BkColor}" Value="Yellow">
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<Setter TargetName="bg" Property="Background" Value="#FE0" />
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</DataTrigger>
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</DataTemplate.Triggers>
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</DataTemplate>
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</GridViewColumn.CellTemplate>
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</GridViewColumn>
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<GridViewColumn
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Width="80"
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DisplayMemberBinding="{Binding Data}"
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Header="Data" />
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</GridView>
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</ListView.View>
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</ListView>
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</Grid>
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</Window>
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```
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```
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```cs
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using System.Collections.ObjectModel;
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using System.ComponentModel;
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using System.Runtime.CompilerServices;
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using System.Windows;
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using System.Windows.Controls;
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namespace Questions248072
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{
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public class User : INotifyPropertyChanged
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{
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public string No { get; set; }
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public string Name { get; set; }
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public string Data { get; set; }
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public string BkColor { get => _BkColor; set => Set(ref _BkColor, value, null); } // 面倒なので全プロパティ発砲
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public string _BkColor;
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// 全くイケていないがコンバータを書くより手軽なので。。。
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public bool IsRed => BkColor == "Red";
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public bool IsYellow => BkColor == "Yellow";
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public bool IsWhite => !IsRed && !IsYellow;
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#region INotifyPropertyChanged
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public event PropertyChangedEventHandler PropertyChanged;
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protected bool Set<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
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{
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if(Equals(storage, value)) return false;
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storage = value;
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OnPropertyChanged(propertyName);
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return true;
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}
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protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
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=> PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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#endregion
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}
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public partial class MainWindow : Window
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{
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public ObservableCollection<User> Users { get; }
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public MainWindow()
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{
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InitializeComponent();
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Users = new ObservableCollection<User>
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{
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new User{ No = "WPF C# VS2015", Name = "aaa", Data = "bbb", BkColor = "Red", },
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new User{ No = "WPF C# VS2017", Name = "aaa", Data = "bbb", BkColor = "Yellow", },
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new User{ No = "WPF C# VS2019", Name = "aaa", Data = "bbb", },
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};
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protected bool Set<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
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{
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if(Equals(storage, value)) return false;
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DataContext = this;
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OnPropertyChanged(propertyName);
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return true;
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}
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private void MenuItem_Click(object sender, RoutedEventArgs e)
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{
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if(sender is MenuItem menuItem)
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{
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if(menuItem.DataContext is User user)
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{
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switch(menuItem.Header)
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{
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case "通常":
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user.BkColor = "";
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break;
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case "黄色":
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user.BkColor = "Yellow";
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break;
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case "赤":
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user.BkColor = "Red";
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break;
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}
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}
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}
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}
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}
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public partial class MainWindow : Window
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{
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public ObservableCollection<User> Users { get; }
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public MainWindow()
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{
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InitializeComponent();
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Users = new ObservableCollection<User>
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{
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new User{ No = "WPF C# VS2015", Name = "aaa", Data = "bbb", BkColor = "Red", },
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new User{ No = "WPF C# VS2017", Name = "aaa", Data = "bbb", BkColor = "Yellow", },
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new User{ No = "WPF C# VS2019", Name = "aaa", Data = "bbb", },
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};
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DataContext = this;
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}
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private void MenuItem_Click(object sender, RoutedEventArgs e)
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{
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if(sender is MenuItem menuItem)
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{
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if(menuItem.DataContext is User user)
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{
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switch(menuItem.Header)
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{
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case "通常":
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user.BkColor = "";
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break;
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case "黄色":
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user.BkColor = "Yellow";
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break;
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case "赤":
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user.BkColor = "Red";
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break;
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}
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}
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}
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}
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}
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}
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307
154
|
```
|
|
308
155
|
|
|
309
|
-
|
|
310
|
-
|
|
311
156
|
|