Question

我在资源文件的Style TreeViewItems中有以下代码：

<Setter Property="HeaderTemplate">
    <Setter.Value>
        <DataTemplate>
            <StackPanel Orientation="Horizontal">
                <Image Name="img"
                   Width="20"
                   Height="20"
                   Stretch="Fill"
                   Source=""/>
                <TextBlock Text="{Binding}" Margin="5,0" />
            </StackPanel>
        </DataTemplate>
    </Setter.Value>
</Setter>

我现在如何在代码中设置TreeViewItem的图像/来源？

Answer 1

XAML：

<Window x:Class="TreeViewWpfApplication.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <TreeView Name="treeView">
        </TreeView>        
    </Grid>
</Window>

代码背后：

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            CreateTree();
        }

        private void CreateTree()
        {
            treeView.Items.Add(GetTreeView("text"));
        }

        private TreeViewItem GetTreeView(string text)
        {
            TreeViewItem newTreeViewItem = new TreeViewItem();

            // create stack panel
            StackPanel stack = new StackPanel();
            stack.Orientation = Orientation.Horizontal;

            // create Image
            Image image = new Image();
            image.Source = new BitmapImage(new Uri(@"/Images/YourImage.png", UriKind.Relative));

            // Label
            TextBlock lbl = new TextBlock();
            lbl.Text = text;
            lbl.TextWrapping = TextWrapping.Wrap;
            lbl.Width = 139;

            // Add into stack
            stack.Children.Add(image);
            stack.Children.Add(lbl);

            // assign stack to header
            newTreeViewItem.Header = stack;

            return newTreeViewItem;
        }
    }
}

注意image.Source = new BitmapImage(new Uri(@"/Images/YourImage.png", UriKind.Relative))其中＆＃34; / Images /＆＃34; - 文件夹名称。

Wpf绑定图像

1 个答案: