stackpanel 中的 wpf 文本块自动调整大小/布局

发布于 2024-08-13 04:19:22 字数 652 浏览 6 评论 0原文

我有以下堆栈面板

<StackPanel>
                <TextBlock Text="{Binding AddressLine1}" />
                <TextBlock Text="{Binding AddressLine2}" />
                <TextBlock Text="{Binding AddressLine3}"  />
                <TextBlock Text="{Binding AddressLine4}"  />
</StackPanel>

，并且绑定对象上的 AddressLine2 字符串为空。

我的堆栈面板呈现为类似的效果

| AddressLine1 |
|              |
| AddressLine3 |
| AddressLine4 |

，但我希望它呈现为类似的效果，

| AddressLine1 |
| AddressLine3 |
| AddressLine4 |

这可能吗，还是我缺少一种明显的方法来做到这一点？

谢谢，克里斯

原文

I have the following stack panel

<StackPanel>
                <TextBlock Text="{Binding AddressLine1}" />
                <TextBlock Text="{Binding AddressLine2}" />
                <TextBlock Text="{Binding AddressLine3}"  />
                <TextBlock Text="{Binding AddressLine4}"  />
</StackPanel>

and my AddressLine2 string is null on the bound object.

My stack panel renders like

| AddressLine1 |
|              |
| AddressLine3 |
| AddressLine4 |

but I want it to render like

| AddressLine1 |
| AddressLine3 |
| AddressLine4 |

is this possible, or am I missing an obvious way to do it?

Thanks,
Chris

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后eg是否自 2024-08-20 04:19:22

创建一个实现 IMultiValueConverter 的转换器，然后在文本上使用 MultiBinding，这样每一行只有一个 TextBlock，如下所示：

class MultiStringConverter : IMultiValueConverter
{
    public object Convert( object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture )
    {
        var text = new StringBuilder( );
        for ( int i = 0 ; i < values.Length ; i++ ) {
            string line = String.Format( "{0}", values[i] );
            if ( !String.IsNullOrEmpty( line ) ) {
                text.AppendLine( line );
            }   // if
        }
        return text.ToString( );
    }

    public object[] ConvertBack( object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture )
    {
        throw new NotImplementedException( );
    }
}

在 XAML 中...

    <TextBlock>
        <TextBlock.Text>
            <MultiBinding>
                <MultiBinding.Converter>
                    <Local:MultiStringConverter />
                </MultiBinding.Converter>
                <Binding Path="AddressLine1" />
                <Binding Path="AddressLine2" />
                <Binding Path="AddressLine3" />
                <Binding Path="AddressLine4" />
            </MultiBinding>
        </TextBlock.Text>
    </TextBlock>

Create a converter that implements IMultiValueConverter then use a MultiBinding on the text so that you only have one TextBlock with each line like this:

class MultiStringConverter : IMultiValueConverter
{
    public object Convert( object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture )
    {
        var text = new StringBuilder( );
        for ( int i = 0 ; i < values.Length ; i++ ) {
            string line = String.Format( "{0}", values[i] );
            if ( !String.IsNullOrEmpty( line ) ) {
                text.AppendLine( line );
            }   // if
        }
        return text.ToString( );
    }

    public object[] ConvertBack( object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture )
    {
        throw new NotImplementedException( );
    }
}

And in the XAML...

    <TextBlock>
        <TextBlock.Text>
            <MultiBinding>
                <MultiBinding.Converter>
                    <Local:MultiStringConverter />
                </MultiBinding.Converter>
                <Binding Path="AddressLine1" />
                <Binding Path="AddressLine2" />
                <Binding Path="AddressLine3" />
                <Binding Path="AddressLine4" />
            </MultiBinding>
        </TextBlock.Text>
    </TextBlock>

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