WPF风格:概括

时间:2013-02-19 05:27:37

标签: wpf styles

以下是WPF样式,有没有办法概括硬编码列名称(名称和代码),以便我可以在ComboBox上实际应用此样式时指定它们?更好的是,如果我甚至可以修改列数?

 <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>

1 个答案:

答案 0 :(得分:0)

而不是使用样式,您可以考虑使用具有列的依赖项属性的自定义控件。

涉及一些设置,但它会更好地满足您的需求,特别是如果您想重复使用它。

一个例子如下。其中一些是您应该能够填写的伪代码。

<!-- 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.
     }
}

在摘要中,为您添加自定义控件和自定义依赖项属性,然后在模板中的theme / generic.xaml中添加,并将网格命名为要在应用模板函数中插入模板的内容。从那里你可以准备好设置或者可以设置你在依赖属性中指定的列。

注意:依赖项属性实际上并不是必需的,但它可以帮助您稍后使用诸如更改回调上的依赖项属性之类的内容,以便在必要时进行更新。