[英]How to change background color and color of textbloxk content of selected item of a listbox in WP8?
正在使用Windows Phone 8應用。 我正在使用一個列表框動態顯示列表,並且在列表框中某項的選擇更改時,我希望選定的項目背景顏色為藍色,文本塊文本顏色為白色(僅適用於選定的項目),這是我的列表框的xaml代碼
<Canvas x:Name="Canvas_Main" Margin="23,191,27,75" Tap="Canvas_Main_Tap">
<ListBox x:Name="Listbox_Main" Height="534" Width="430" ItemsSource="{Binding}" SelectionChanged="Listbox_Main_SelectionChanged" Tap="Listbox_Main_Tap" Canvas.Left="10" >
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="Padding" Value="5"/>
</Style>
</ListBox.ItemContainerStyle>
<ListBox.ItemTemplate>
<DataTemplate>
<Canvas x:Name="cnv_Items" Height="100" Width="200">
<Border Height="100" Width="200" BorderThickness="2" BorderBrush="#FFD0D0D0"/>
<TextBlock x:Name="Tb_Value" Text="{Binding Value}" TextWrapping="NoWrap" Foreground="Black" TextAlignment="Right" FontSize="26" Height="40" Width="195" Canvas.Top="10" Canvas.Left="2"/>
<TextBlock x:Name="Tb_UnitName" Text="{Binding Key}" Foreground="Black" TextAlignment="Right" FontSize="19" Height="40" Width="180" Canvas.Top="55" Canvas.Left="10"/>
</Canvas>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Canvas>
其背后的代碼:
private void Listbox_Main_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (Canvas_KeyBoard.Visibility == Visibility.Visible)
OutAnimation();
if (Listbox_Main.SelectedItem != null)
{
myitem = (KeyValuePair<string, string>)Listbox_Main.SelectedItem;
ListBoxItem myitem1 = Listbox_Main.SelectedItem as ListBoxItem;
SolidColorBrush brush = new SolidColorBrush(Color.FromArgb(255, 255, 0, 0));
myitem1.Background = brush;
Conversion_Logic();
}
}
請告訴我該怎么辦,我正在此問題上工作2天,但無法獲取解決方案。 希望你能幫助我
由於您有一個selectionchanged更改事件對於您的ListBox,您可以嘗試一下。 最好的解決方案是使用樣式和觸發器
private void Listbox_Main_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
ListBoxItem myitem = Listbox_Main.SelectedItem as ListBoxItem;
SolidColorBrush brush = new SolidColorBrush(Color.FromArgb(255,255,0,0));
myitem.Background = brush;
}
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