Question

如何从代码中设置组件TextBlock Text，我尝试像this.dialog.lbTitle.Text那样访问它，但是无法从代码访问..

修改：

CustomDialog dialog;
public async void button_Click(object sender, RoutedEventArgs e)
{           
    this.dialog = (CustomDialog)this.Resources["CustomDialogTest"];
    //this.dialog.lbTitle.Text = "Haloo"; --> I like to do something like this
        this.dialog.Height = 500;
    await this.ShowMetroDialogAsync(dialog);
}

XAML：

...
xmlns:Dialog="clr-namespace:MahApps.Metro.Controls.Dialogs;assembly=MahApps.Metro"
...
<Window.Resources>
    <Style x:Key="ButtonOpacity" TargetType="{x:Type Button}">
        <Setter Property="Control.Opacity" Value="0.2"></Setter>
    </Style>
    <Dialog:CustomDialog x:Key="CustomDialogTest"
                                x:Name="CustomTestDialog">

        <Grid Background="Beige" ShowGridLines="False">
            <Grid.ColumnDefinitions>
                <ColumnDefinition />
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition />
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" />
                <RowDefinition Height="Auto"  />
            </Grid.RowDefinitions>
            <Image Height="250" Source="/images/rumus.jpg" Grid.Column="0" Grid.Row="0" Grid.RowSpan="12" Margin="10,10,10,10" />
            <TextBlock Grid.Column="1" Grid.Row="0" FontSize="20" Text="Title:" />
            <TextBlock Name="lbTitle" Grid.Column="2" Grid.Row="0" FontSize="20" Text="" />

        </Grid>
    </Dialog:CustomDialog>
</Window.Resources>

Answer 1

在您的方案中，您不是通过使用分部类定义来共享“Dialog”类。要查看FramworkElement的子项，您可以使用this。

public async void button_Click(object sender, RoutedEventArgs e)
{
    dialog = (CustomDialog)this.Resources["CustomDialogTest"];

    // at this point ensure that "lbTitle" is instantiated and part of the dialogs visual tree
    var tb = dialog.FindName("lbTitle") as TextBlock;
    if(tb != null && dialog != null)
    {
        tb.Text = "Haloo"; --> I like to do something like this
    }
}

在Window.Resources中设置或获取子组件属性

1 个答案: