名称“abc”在名称空间“clr-namespace：abc”中不存在

Question

我试图在wpf中以非绑定模式devexpress控制构造一棵树。 我已经提到以下链接Building a Tree in Unbound Mode。请检查图像，我在xaml代码中出现错误。所需的输出是硬编码数据必须出现在树形图中，但如果我从第38-44行删除了xaml代码，则出现的输出只是树形结构。我知道错误是在xaml中我仍然提供cs代码。

***************************代码******************* **********************

 namespace PstImporter
  {
/// <summary>
/// Interaction logic for pstSelect.xaml
/// </summary>
public partial class pstSelect : Window
{
    string stgPath;
    public pstSelect ()
    {
        InitializeComponent();
        treePstSelect.Visibility = Visibility.Hidden;
        List < MailboxHelper.Folder > lstMailBoxHelper = Globals.selectFolder(fileName);
        buildTree(lstMailBoxHelper);
        treeListView1.ExpandAllNodes();
        this.barButtonItem1.ItemClick += this.barButtonItem1_ItemClick;
    }

    public class ProjectObject
    {
        public string Name { get; set; }
        public string Executor { get; set; }
    }

    private void buildTree (List<MailboxHelper.Folder> lstMailBoxHelper)
    {
        TreeListNode rootNode = CreateRootNode(new ProjectObject() { Name = lstMailBoxHelper[0].displayName, Executor = lstMailBoxHelper[1].displayName });
        TreeListNode childNode = CreateChildNode(rootNode, new ProjectObject() { Name = lstMailBoxHelper[2].displayName, Executor = lstMailBoxHelper[1].displayName });
        CreateChildNode(childNode, new ProjectObject() { Name = lstMailBoxHelper[3].displayName, Executor = lstMailBoxHelper[1].displayName });
    }

    private TreeListNode CreateRootNode(object dataObject)
    {
        TreeListNode rootNode = new TreeListNode(dataObject);
        treeListView1.Nodes.Add(rootNode);
        return rootNode;
    }

    private TreeListNode CreateChildNode (TreeListNode parentNode, object dataObject)
    {
        TreeListNode childNode = new TreeListNode(dataObject);
        parentNode.Nodes.Add(childNode);
        return childNode;
    }

Answer 1

您不能在xaml中引用嵌套类。下面是MSDN关于嵌套类的说法

http://msdn.microsoft.com/en-us/library/ms753379.aspx

  

您的自定义类不能是嵌套类。嵌套类和   ＆＃34;点＆＃34;在他们的一般CLR使用语法中干扰其他WPF   和/或XAML功能，例如附加属性。

您可以从Window类

中取出ProjectObject课程

namespace PstImporter
  {

     public class ProjectObject
    {
        public string Name { get; set; }
        public string Executor { get; set; }
    }
  }

然后你可以参考它

xmlns:local="clr-namespace:PstImporter"

<local:ProjectObject>