我想继承默认的TabControl并处理事件双击TabItem标头。
这是 XAML file:
<local:MyTabControl x:Class="MyTabControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:CustomizedTabControl"
mc:Ignorable="d">
<local:MyTabControl.Style>
<Style TargetType="{x:Type local:MyTabControl}" BasedOn="{StaticResource {x:Type TabControl}}">
<Setter Property="ItemContainerStyle">
<Setter.Value>
<Style TargetType="{x:Type TabItem}">
<Setter Property="HeaderTemplate">
<Setter.Value>
<DataTemplate>
<Label Content="{Binding}">
<Label.Style>
<Style TargetType="Label">
<EventSetter Event="MouseDoubleClick" Handler="OnTabHeaderDoubleClick"/>
</Style>
</Label.Style>
</Label>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
</Style>
</local:MyTabControl.Style>
这就是后面的代码:
using System.Windows.Controls;
using System.Windows.Input;
namespace CustomizedTabControl
{
public partial class MyTabControl : TabControl
{
public MyTabControl() : base()
{
}
public void OnTabHeaderDoubleClick(object sender, MouseButtonEventArgs e)
{
//Never call
}
}
}
但事件处理程序从不被调用。你 怎么 想?
这是我使用定制的TabControl的代码:
<Window x:Class="CustomizedTabControl.MainWindow"
.. .
Title="MainWindow" Height="350" Width="525">
<Grid>
<local:MyTabControl x:Name="tabControl">
<TabItem Header="TabItem">
<Grid Background="#FFE5E5E5"/>
</TabItem>
<TabItem Header="TabItem">
<Grid Background="#FFE5E5E5"/>
</TabItem>
</local:MyTabControl>
</Grid>
</Window>