如何拉伸我的自定义列表框?
How can I stretch my custom ListBox?
我有一个带有自定义元素的列表框,我希望它们可以伸展以占据所有可用区域。这是我的代码;目前,这些项目只占用他们需要的 space,而我在屏幕的左侧和右侧有一些未使用的 space。为什么?
<ListBox x:Name="listBox" Margin="0,6,0,0">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
<ListBox.ItemTemplate>
<DataTemplate>
<local:ListTemplateSelector Content="{Binding}">
<local:ListTemplateSelector.bloccato>
<DataTemplate>
<StackPanel Grid.Row="1">
<Grid Background="Beige">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Image Grid.Column="0" Source="/Assets/Images/locked.png" Width="40" Height="40" HorizontalAlignment="Left"/>
<TextBlock Grid.Column="1" Text="{Binding nomePacchetto}" FontFamily="./Assets/neo-normal.ttf#NEOTERIC" FontSize="48" VerticalAlignment="Bottom" Foreground="#FF373737"/>
</Grid>
<Line Stroke="DarkGray" X2="400" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,6,0,6"/>
</StackPanel>
</DataTemplate>
</local:ListTemplateSelector.bloccato>
<local:ListTemplateSelector.sbloccato>
<DataTemplate>
<StackPanel Grid.Row="1">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="left" Foreground="#FF5B5B5B"><Run FontSize="32" Text="1/"/> <Run FontSize="20" Text="40"/></TextBlock>
<TextBlock Grid.Column="1" Text="{Binding nomePacchetto}" FontFamily="./Assets/neo-normal.ttf#NEOTERIC" FontSize="48" VerticalAlignment="Bottom" Foreground="#FF373737"/>
</Grid>
<Line Stroke="DarkGray" X2="400" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,6,0,6"/>
</StackPanel>
</DataTemplate>
</local:ListTemplateSelector.sbloccato>
</local:ListTemplateSelector>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
有两个属性应该起作用但它们不起作用 (HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch")
为了解决这个问题,这个例子将帮助你解决这个问题:
<ListBox x:Name="ListBoxInstance" HorizontalAlignment="Stretch" >
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Background="Green" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="{Binding ActualWidth, ElementName=ListBoxInstance, Mode=OneWay}" >
<Border Background="Red" >
<TextBlock Text="{Binding}"/>
</Border>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBox.Items>
<x:String>This is a test</x:String>
<x:String>This is the second</x:String>
<x:String>This is the thidr</x:String>
<x:String>s</x:String>
</ListBox.Items>
</ListBox>
如您所见
Width="{Binding ActualWidth, ElementName=ListBoxInstance}"
您的内容已达到全宽。
在其他一些情况下(取决于平台)
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
有两种方法可以解决这个问题:
(1)
最简单的方法是在数据模板中为根网格提供固定宽度。虽然您将提供固定宽度,但它会响应分辨率。
检查这个例子:
// XAML page
<ListBox x:Name="lbxTest" Margin="12">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Background="Blue" Width="370" >
<TextBlock Text="{Binding}" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
如果你把你的代码写成这样:
List<string> lstString = new List<string>() { "string 1", "string 2", "string 3" };
lbxTest.ItemsSource = lstString;
那么在每个分辨率下(480x800、720x1280、768x1280、1080x1920),ListBox得到的大小都是一样的
查看截图以供参考。
480x800 屏幕截图
768x1280 屏幕截图
(2)
解决此问题的另一种方法是在我们将分配给 ListBox 的 ItemSource 中添加一个参数。
<ListBox x:Name="lbxTest" Margin="12">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Background="Blue" Width="{Binding width}" >
<!--Width="370"-->
<TextBlock Text="{Binding text}" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
// code behind
public class Model
{
public double width { get; set; }
public string text { get; set; }
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
Model m1 = new Model()
{
text = "string 1",
width = lbxTest.ActualWidth
};
Model m2 = new Model()
{
text = "string 2",
width = lbxTest.ActualWidth
};
List<Model> lstModel = new List<Model>();
lstModel.Add(m1);
lstModel.Add(m2);
lbxTest.ItemsSource = lstModel;
}
希望这会有所帮助..!!
我有一个带有自定义元素的列表框,我希望它们可以伸展以占据所有可用区域。这是我的代码;目前,这些项目只占用他们需要的 space,而我在屏幕的左侧和右侧有一些未使用的 space。为什么?
<ListBox x:Name="listBox" Margin="0,6,0,0">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
<ListBox.ItemTemplate>
<DataTemplate>
<local:ListTemplateSelector Content="{Binding}">
<local:ListTemplateSelector.bloccato>
<DataTemplate>
<StackPanel Grid.Row="1">
<Grid Background="Beige">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Image Grid.Column="0" Source="/Assets/Images/locked.png" Width="40" Height="40" HorizontalAlignment="Left"/>
<TextBlock Grid.Column="1" Text="{Binding nomePacchetto}" FontFamily="./Assets/neo-normal.ttf#NEOTERIC" FontSize="48" VerticalAlignment="Bottom" Foreground="#FF373737"/>
</Grid>
<Line Stroke="DarkGray" X2="400" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,6,0,6"/>
</StackPanel>
</DataTemplate>
</local:ListTemplateSelector.bloccato>
<local:ListTemplateSelector.sbloccato>
<DataTemplate>
<StackPanel Grid.Row="1">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="left" Foreground="#FF5B5B5B"><Run FontSize="32" Text="1/"/> <Run FontSize="20" Text="40"/></TextBlock>
<TextBlock Grid.Column="1" Text="{Binding nomePacchetto}" FontFamily="./Assets/neo-normal.ttf#NEOTERIC" FontSize="48" VerticalAlignment="Bottom" Foreground="#FF373737"/>
</Grid>
<Line Stroke="DarkGray" X2="400" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,6,0,6"/>
</StackPanel>
</DataTemplate>
</local:ListTemplateSelector.sbloccato>
</local:ListTemplateSelector>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
有两个属性应该起作用但它们不起作用 (HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch")
为了解决这个问题,这个例子将帮助你解决这个问题:
<ListBox x:Name="ListBoxInstance" HorizontalAlignment="Stretch" >
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Background="Green" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="{Binding ActualWidth, ElementName=ListBoxInstance, Mode=OneWay}" >
<Border Background="Red" >
<TextBlock Text="{Binding}"/>
</Border>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBox.Items>
<x:String>This is a test</x:String>
<x:String>This is the second</x:String>
<x:String>This is the thidr</x:String>
<x:String>s</x:String>
</ListBox.Items>
</ListBox>
如您所见
Width="{Binding ActualWidth, ElementName=ListBoxInstance}"
您的内容已达到全宽。
在其他一些情况下(取决于平台)
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
有两种方法可以解决这个问题:
(1) 最简单的方法是在数据模板中为根网格提供固定宽度。虽然您将提供固定宽度,但它会响应分辨率。
检查这个例子:
// XAML page
<ListBox x:Name="lbxTest" Margin="12">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Background="Blue" Width="370" >
<TextBlock Text="{Binding}" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
如果你把你的代码写成这样:
List<string> lstString = new List<string>() { "string 1", "string 2", "string 3" };
lbxTest.ItemsSource = lstString;
那么在每个分辨率下(480x800、720x1280、768x1280、1080x1920),ListBox得到的大小都是一样的
查看截图以供参考。
480x800 屏幕截图
768x1280 屏幕截图
(2) 解决此问题的另一种方法是在我们将分配给 ListBox 的 ItemSource 中添加一个参数。
<ListBox x:Name="lbxTest" Margin="12">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Background="Blue" Width="{Binding width}" >
<!--Width="370"-->
<TextBlock Text="{Binding text}" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
// code behind
public class Model
{
public double width { get; set; }
public string text { get; set; }
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
Model m1 = new Model()
{
text = "string 1",
width = lbxTest.ActualWidth
};
Model m2 = new Model()
{
text = "string 2",
width = lbxTest.ActualWidth
};
List<Model> lstModel = new List<Model>();
lstModel.Add(m1);
lstModel.Add(m2);
lbxTest.ItemsSource = lstModel;
}
希望这会有所帮助..!!