WPF - 引用事件中的类成员 [英] WPF - referencing a class member in an event

问题描述

我有一组包含图像的类和这些图像的路径：

I have a collection of classes that hold images and the paths of those images:

public ObservableCollection<Item> PictureList { get; set; }

public class Item
{

public ImageSource picture { get; set; }
public string fullName { get; set; }

}

我使用列表框来显示图像。

I am using a listbox to display the images.

<ListBox Height="Auto"
            Width="200"
                 Margin="0"
                 ItemsSource="{Binding PictureList}">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <StackPanel>

                    <Image Source="{Binding picture}"
                           Height="100"
                           Width="100"
                           MouseUp="Picture_Click"/>

                </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>

我希望能够做的是参考 Picture_Click 事件中的fullName 属性，但是由于图像绑定到图片我不能弄清楚如何访问 fullName 属性。



我用谷歌搜索但没有运气来解决这个问题。



这方面的任何帮助都很受欢迎。

What I would like to be able to do is reference the fullName property in the Picture_Click event, however as the image is bound to picture I cannot figure out how to access the fullName property.

I have googled but had not luck in working this out.

Any help on this much appreciated.

推荐答案

你不需要 Button ，只需引用 Image 的 DataContext ，类似于你所做的：

You don't need the Button, just reference the DataContext of the Image similar to what you did:

private void Picture_Click(object sender, RoutedEventArgs e)
{
  MessageBox.Show(((Item)(((Image)sender).DataContext)).fullName);
}

应该工作。

Ought to work.

我通过将图像包装在一个按钮内来修复它：

I fixed it by wrapping the image inside a button:

<listbox height="Auto">
            Width="200"
                 Margin="0"
                 ItemsSource="{Binding PictureList}">
        <listbox.itemtemplate>
            <datatemplate>
                <stackpanel>

                    <button background="Transparent">
                            Click="Button_Click">
                        <image source="{Binding picture}">
                                   Height="100"
                                   Width="100"/>
                    </image></button>

                </stackpanel>
            </datatemplate>
        </listbox.itemtemplate>
    </listbox>

使用 Button_Click 方法然后我引用 fullName property。

WIthin the Button_Click method I then reference the fullName property.

private void Button_Click(object sender, RoutedEventArgs e)
      {

          MessageBox.Show(((Item)(((Button)sender).DataContext)).fullName);

      }

这不是很好，任何人都有更优雅的解决方案请在这里发布 - 谢谢。

It's not pretty so anyone with a more elegant solution please post it here - thanks.

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