如何在WPF TreeView中添加和显示图像？ [英] How to add and show images in a WPF TreeView?

问题描述

我在代码中填写TreeView（WPF），并希望在项目中使用一些图标。
我可以加载并添加BitmapImage，但它只显示，当BitmapImage也分配给窗口中的另一个ImageControl（并显示在那里）时：

I fill a TreeView (WPF) in the code and want to use some icons in the items. I can load and add BitmapImage but it is only displayed, when the BitmapImage is also assigned to another ImageControl in the window (and shown there):

TreeViewItem newItem = new TreeViewItem();
Image tempImage = new Image();
BitmapImage bitmapImage = new BitmapImage(new Uri(@"/Resources/ok-01.png", UriKind.Relative));
tempImage.Source = bitmapImage;

imageControlInWindow.Source = bitmapImage; //if I delete this line (it is not needed) the image in the TreeViewItem is not shown

TextBlock tempTextBlock = new TextBlock();            
tempTextBlock.Inlines.Add(tempImage);
tempTextBlock.Inlines.Add("SomeText");
newItem.Header = tempTextBlock;

如何强制图像显示在TreeView中而不会在树视图外显示图像作为副本？

How can I force the image to be shown in the TreeView without the hack of showing it outside the treeview as copy?

推荐答案

您没有从正确的资源文件包URI 。

它应该如下所示：

var bitmapImage = new BitmapImage(new Uri("pack://application:,,,/Resources/ok-01.png"));

图像文件的构建操作必须设置为资源。

The Build Action of the image file must be set to Resource.

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