Question

您好我想从后面的代码访问ResourceDictinory.xaml文件中datatemplate内的控件。

我的ResFile1.xaml内容

<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<DataTemplate x:Key="btnTemplate1">
    <StackPanel>
        <TextBlock Name="txtBlock" Text="Abcd123" Foreground="Red"/>
        <TextBox Name="txtBox" Text="textbox Text"/>
    </StackPanel>
</DataTemplate>

好的。我在MainPage.xaml

中使用它

        <phone:PhoneApplicationPage.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="ResFile1.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</phone:PhoneApplicationPage.Resources>

        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
        <Button HorizontalAlignment="Left" Height="152" Margin="106,221,0,0"
                VerticalAlignment="Top" Width="256" 
        ContentTemplate="{Binding ConverterParameter=blabla, Converter={StaticResource TestResConverter}, Mode=OneWay, Source={StaticResource btnTemplate1}}"/>
    </Grid>

我的TestResConverter类。（访问此类中datatemplate内的元素）

    public class ConverterTest : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value is DataTemplate)
        {
            DataTemplate dataTemplate = value as DataTemplate;
            //access elements
            TextBox accessedTextbox = XXXMehod(dataTemplate);
            accessedTextbox.Text = (string)parameter;//e.g change text property
        }
        return value;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotSupportedException();
    }
}

如何访问datatemplate中的元素？什么是访问，编辑DataTemplate的替代方案？另外我看一下wpf项目，但是某些方法不存在wp7。

Answer 1

使用ItemContainerGenerator。
这是一个例子http://msdn.microsoft.com/en-us/library/bb613579.aspx

访问Windows Phone 7中datatemplate内的元素

1 个答案: