使用 List<string> 绑定 WPF 文本块 [英] WPF textblock binding with List&lt;string&gt;

问题描述

有谁知道是否有一种简单的方法可以将文本块绑定到列表.到目前为止，我所做的是创建一个列表视图并将其绑定到列表，然后我在列表视图中有一个使用单个文本块的模板.

does anyone know if there is a simple way to bind a textblock to a List. What I've done so far is create a listview and bind it to the List and then I have a template within the listview that uses a single textblock.

我真正想做的只是将 List 绑定到文本块并让它显示所有行.

what I'd really like to do is just bind the List to a textblock and have it display all the lines.

在 Winforms 中有一个Lines"属性，我可以将列表放入其中，但我没有在 WPF 文本块或文本框上看到它.

In Winforms there was a "Lines" property that I could just throw the List into, but I'm not seeing it on the WPF textblock, or TextBox.

有什么想法吗?

我错过了一些简单的东西吗?

did I miss something simple?

这是代码

<UserControl x:Class="QSTClient.Infrastructure.Library.Views.WorkItemLogView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         Width="500" Height="400">
<StackPanel>
    <ListView ItemsSource="{Binding Path=Logs}" >
        <ListView.View>
            <GridView>
                <GridViewColumn Header="Log Message">
                    <GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding}"/>
                        </DataTemplate>
                    </GridViewColumn.CellTemplate>
                </GridViewColumn>
            </GridView>
        </ListView.View>
    </ListView>
</StackPanel>

和工作项类

public class WorkItem
{
    public string Name { get; set; }
    public string Description { get; set; }
    public string CurrentLog { get; private set; }
    public string CurrentStatus { get; private set; }
    public WorkItemStatus Status { get; set; }
    public ThreadSafeObservableCollection<string> Logs{get;private set;}

我正在使用 Prism 创建控件并将其放入 WindowRegion

I'm using Prism to create the control and put it into a WindowRegion

        WorkItemLogView newView = container.Resolve<WorkItemLogView>();
        newView.DataContext = workItem;
        regionManager.Regions["ShellWindowRegion"].Add(newView);

谢谢

推荐答案

将您的 List 转换为单个字符串，中间以 "作为分隔符.并将其绑定到 TextBlock.确保 TextBlock 不受其高度限制，以便它可以根据行数增长.我会将其实现为 XAML 绑定的值转换器，它将字符串列表转换为单个字符串，并在其间添加新行

Convert your List to a single string with " " as the delimiter in between. and bind that to the TextBlock. Make sure that the TextBlock is not restricted with its height , so that it can grow based on the number of lines. I would implement this as a Value Converter to XAML Binding which converts a List of strings to a single string with new line added in between

<TextBlock Text="{Binding Path=Logs,Converter={StaticResource ListToStringConverter}}"/>

ListToStringConverter 看起来像这样:

The ListToStringConverter would look like this:

[ValueConversion(typeof(List<string>), typeof(string))]
public class ListToStringConverter : IValueConverter
{

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (targetType != typeof(string))
            throw new InvalidOperationException("The target must be a String");

        return String.Join(", ", ((List<string>)value).ToArray());
    }

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

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