編程方式更改單個ListViewItem的佈局

Question

我有一個GridView一個ListView它：

<ListView x:Name="listViewPersons" ItemsSource="{Binding Path=Persons, Mode=OneWay}" IsSynchronizedWithCurrentItem="True" 
        Height="Auto" HorizontalAlignment="Stretch" Margin="4,4,4,4" Grid.Row="4" VerticalAlignment="Stretch" Width="Auto"> 
      <ListView.View> 
       <GridView x:Name="gridViewPersons"> 
        <GridViewColumn Header="Enabled"> 
         <GridViewColumn.CellTemplate> 
          <DataTemplate> 
           <StackPanel> 
            <CheckBox HorizontalAlignment="Center" IsChecked="true" /> 
           </StackPanel> 
          </DataTemplate> 
         </GridViewColumn.CellTemplate> 
        </GridViewColumn> 
        <GridViewColumn Header="Name" DisplayMemberBinding="{Binding Path=Name}" Width="142" /> 
        <GridViewColumn Header="Age" DisplayMemberBinding="{Binding Path=Age}" Width="142" /> 
        <GridViewColumn Header="Gender" DisplayMemberBinding="{Binding Path=Gender}" Width="142" /> 
       </GridView> 
      </ListView.View> 
     </ListView> 

我希望能夠以編程方式更改每個ListViewItem S（或在網格中的行）的背景還是重點講來任何顏色我想，例如

listViewPersons.Items[0].Background = Brush.Red; 
listViewPersons.Items[1].Background = Brush.Blue; 
listViewPersons.Items[2].Background = Brush.Green 

我知道的代碼前面的行不工作，但它幾乎解釋了我想達到的目標。任何幫助？

謝謝！

Answer 1

如何對這種做法：

1. 綁定ForegroundColor和背景顏色在人的屬性。讓我們調用這個屬性PersonStatus，並將其類型設置爲狀態枚舉，就這個例子。

2. 確保此人員執行INotifyPropertyChanged，並且該屬性的設置者引發ProperyChanged事件。該物業將是這樣的：

   public Status PersonStatus 
   { 
       get 
       { 
        return status; 
       } 
       set 
       { 
        if (value != status) 
        { 
         status= value; 
         if (PropertyChanged != null) 
          PropertyChanged(this, new PropertyChangedEventArgs("PersonStatus")); 
        } 
       } 
   } 
   

3. 創建IValueConverter這需要狀態的類型，並返回一個Brushes.Black，Brushes.Red等事情是這樣的：

   public class StatusToColorConverter : IValueConverter 
   { 
       public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
       { 
        if (targetType != typeof(Status)) 
         throw new InvalidOperationException("targetType must be Status"); 
   
        Status status = (Status)value; 
   
        switch (status) 
        { 
         case Status.New: 
          return Brushes.Black; 
         case Status.Professional: 
          return Brushes.Blue; 
         case Status.Delete: 
          return Brushes.Red; 
         default: 
          return Brushes.Black; 
        } 
       } 
   
       public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
       { 
        throw new NotImplementedException(); 
       } 
   }