作为WPF样式,有没有一种方法可以概括硬编码的列名(Name和Code),这样我就可以在ComboBox上实际应用这种样式时指定它们?更好的是,如果我甚至可以修改列的数量?
<Style TargetType="ComboBox" x:Key="MultiColumnComboBoxStyle">
<Style.Resources>
<Style TargetType="ComboBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBoxItem">
<Border>
<Grid HorizontalAlignment="Stretch" TextElement.FontWeight="Normal">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" SharedSizeGroup="Code" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="{Binding Path=Name}" />
<Rectangle Grid.Column="1" Width="1" Fill="Black" />
<TextBlock Grid.Column="2" Text="{Binding Path=Code}" Margin="5,0,5,0" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Style.Resources>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<StackPanel Grid.IsSharedSizeScope="True" IsItemsHost="True" />
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
</Style>
您可以考虑为列封装一个具有依赖属性的自定义控件,而不是使用样式。
涉及一点设置,但它将更好地满足您的需求,特别是如果您想重用它。
一个例子如下。其中一些是您应该能够填写的psuedo代码。
<!-- In your generic.xaml file -->
<Style TargetType="MyCustomComboBox" >
<Setter Property="Template" >
<Setter.Value>
<ControlTemplate TargetType="MyCustomComboBox" >
<!-- your template code goes here -->
<Grid x:Name="_myCustomGrid />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
//then in a cs file inherit from the combo box
public class MyCustomColumnComboBox : ComboBox //get all the combobox functionality
{
public IList ComboColumns
{
get { return (IList)GetValue(ComboColumnsProperty);}
set { SetValue(ComboColumnsProperty,value);}
}
public static readonly DependencyProperty ComboColumnsProperty = DependencyProperty.RegisterProperty(...);
private Grid _grid;
public override OnApplyTemplate()
{
//pull your template grid info here, then use that when setting the columns.
_grid = GetTemplateChild("_myCustomGrid") as Grid;
//from here you can check to see if you have your list yet,
//if you don't then you maintain the grid for when you do have your list.
// This can behave different depending on if you are in wpf or silverlight,
// and depending on how you were to add the items to the dependency property.
}
}
在Summary中,为您添加具有自定义依赖项属性的自定义控件,然后在您的主题/generic.xaml中放入模板,并在on-apply-template函数中将网格命名为要拉入模板的内容。从那里,您可以准备好设置,也可以设置在dependency属性中指定的列。
注意:dependency属性实际上并不是必需的,但它可以帮助您在以后使用诸如change回调中的dependence属性之类的东西进行更新时获得更大的灵活性。