从TreeView中的图标设置图像

Question

我正在编写自己的基于C#的应用程序启动器,并且,当我在其中填充TreeView并启动应用程序快捷方式时,我似乎无法弄清楚如何将图标作为图像添加到TreeView.我目前获取文件的代码是:

    private void homeMenu_Load(object sender, EventArgs e)
    {
        this.ShowInTaskbar = false;
        if (Directory.Exists((Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)).FullName + "\\Roaming\\Launcher")))
        {

        }
        else
        {
            Directory.CreateDirectory(Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)).FullName + "\\Roaming\\Launcher");
        }

        DirectoryInfo launcherFiles = new DirectoryInfo(Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)).FullName + "\\Roaming\\Launcher");

        lstPrograms.Nodes.Add(CreatingDirectoryTreeNode(launcherFiles));

        lstPrograms.Sort();

    }

    private static TreeNode CreatingDirectoryTreeNode(DirectoryInfo directoryInfo)
    {
        var directoryNode = new TreeNode(directoryInfo.Name);

        foreach (var directory in directoryInfo.GetDirectories())
        {
            directoryNode.Nodes.Add(CreatingDirectoryTreeNode(directory));
        }

        foreach (var file in directoryInfo.GetFiles())
        {
            directoryNode.Nodes.Add(new TreeNode(file.Name));
        }

        return directoryNode;
    }

我遇到的主要问题是将TreeList的ImageList图标添加到特定节点.我知道我需要添加:

lstPrograms.ImageList.Images.Add(Icon.ExtractAssociatedIcon());

要将图标实际添加到图像列表中,如何获取该特定图像的索引,然后将其添加到TreeView其相关文件中？

Answer 1

首先,将图像添加为资源并定义图像列表:

static ImageList _imageList;
public static ImageList ImageList
{
    get
    {
        if (_imageList == null)
        {
            _imageList = new ImageList();
            _imageList.Images.Add("Applications", Properties.Resources.Image_Applications);
            _imageList.Images.Add("Application", Properties.Resources.Image_Application);
        }
        return _imageList;
    }
}

然后,设置以下ImageList属性TreeView:

treeView1.ImageList = Form1.ImageList;

然后,在为特定节点创建节点时,使用:

applicationNode.ImageKey = "Application";
applicationNode.SelectedImageKey = "Application";