单击TextBlock后显示其余文本

Question

At this moment I have a TextBlock like this:

<TextBlock MaxLines="4"
            Name="DescriptionText" 
            Grid.Row="1" 
            Grid.Column="1" 
            FontWeight="Thin"
            Foreground="White"
            FontSize="18"
            TextWrapping="Wrap"
            TextTrimming="WordEllipsis"
            Margin="0,10,10,0"/>

I would have to after click on this TextBlock show rest of text in this 2 lines I set in MaxLines .

Answer 1

Set MaxLines as 0 in Tapped Event

private void DescriptionText_Tapped(object sender, TappedRoutedEventArgs e)
{
    DescriptionText.MaxLines = 0;
}

Answer 2

To toggle between the max line and unset

Create event

<TextBlock    
    MaxLines="2"
    Name="DescriptionText" 
    Grid.Row="1" 
    Grid.Column="1" 
    FontWeight="Thin"
    Foreground="White"
    FontSize="18"
    TextWrapping="Wrap"
    TextTrimming="WordEllipsis"
    Margin="0,10,10,0" 
    Tapped = "DescriptionText_Tapped"/>

And alternate between the desired max and default.

private void DescriptionText_Tapped(object sender, TappedRoutedEventArgs e) {
    DescriptionText.MaxLines = DescriptionText.MaxLines == 0 ? 2 : 0;
}

Now every time you tap the text block it will toggle between the two values.