您好,這與How to access a named element of a derived user control in silverlight?類似,區別在於從模板化控件繼承,而不是用戶控件。如何訪問繼承自模板控件的控件中的指定元素
我有一個名爲MyBaseControl
的XAML模板控制: -
<Style TargetType="Problemo:MyBaseControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Problemo:MyBaseControl">
<Grid x:Name="LayoutRoot" Background="White">
<Border Name="HeaderControl" Background="Red" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
代碼: -
public class MyBaseControl : Control
{
public UIElement Header { get; set; }
public MyBaseControl()
{
DefaultStyleKey = typeof(MyBaseControl);
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
var headerControl = GetTemplateChild("HeaderControl") as Border;
if (headerControl != null)
headerControl.Child = Header;
}
}
我有一個名爲myControl另一個控制從MyBaseControl控制
繼承Xaml: -
<me:MyBaseControl x:Class="Problemo.MyControl"
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"
mc:Ignorable="d"
xmlns:me="clr-namespace:Problemo"
d:DesignHeight="300" d:DesignWidth="400">
<me:MyBaseControl.Header>
<TextBlock Name="xxx" />
</me:MyBaseControl.Header>
</me:MyBaseControl>
代碼: -
public partial class MyControl : MyBaseControl
{
public string Text { get; set; }
public MyControl(string text)
{
InitializeComponent();
Text = text;
Loaded += MyControl_Loaded;
}
void MyControl_Loaded(object sender, RoutedEventArgs e)
{
base.ApplyTemplate();
xxx.Text = Text;
}
}
問題是xxx是零。如何在後面的代碼中訪問xxx控件?
是xxx甚至在OnApplyTemplate覆蓋? – 2011-03-02 21:37:20