Question

我有这些文本框，其中包含来自Web服务的信息。我有一个收集信息的课程，然后当我想看到它时，它工作正常。我想要从具有desc绑定的Textblock中收集一条信息，但由于我的文本框技术上不存在，除非用户单击按钮，否则我无法调用Textbox来收集它的信息。有没有办法这样做？

继承我的代码

<ListView x:Name ="View" >
    <ListView.ItemTemplate >
        <DataTemplate>
            <Grid>
                <StackPanel>
                    <TextBlock Text="{Binding title}"></TextBlock>
                    <TextBlock Text="{Binding location}"></TextBlock>
                    <TextBlock Text="{Binding date}"></TextBlock>
                    <TextBlock 
                        x:Name="desc_text" 
                        Text="{Binding desc}"></TextBlock>
                    <Button 
                        x:Name ="website" 
                        HorizontalAlignment="Right" 
                        FontFamily="Segoe MDL2 Assets" 
                        Content="&#xE109;" 
                        Click="website_Click"></Button>
                </StackPanel>
            </Grid>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

我的webservice返回一些新闻，所以StackPanel有时会自我重复，每个都有不同的信息（这就是我想要的），以防必要

Answer 1

There might be other ways to do this, but the easiest way imo: Your dynamic textblock has to be binded dynamically in code behind, you can do that right after you create it. Something like this:

Binding b = new Binding("color1"); // color1 is the property you are binding to
                b.Source = bindedobjectthat-has-a-color1property-to-bind-to;
                b.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
                item.SetBinding(Label.BackgroundProperty, b); // Label.BackgroundProperty is the property receiver of this binding

You will have to implement INotifyPropertyChanged.

从文本块中获取值

1 个答案: