使用Treeview控件进行数据绑定 [英] databinding with treeview control

问题描述

我在我的一个应用程序上使用c#wpf .net framework 3.5

Hi, i am using c# wpf .net framework 3.5 on one of my apps

我正在尝试在运行时在Treeview控件中填充分层树

I am tring to populate a hierarchical tree at runtime in a treeview control

让我们以以下示例为例:

Lets take the following for example:

private void taxonomy_populate_click(object sender, RoutedEventArgs e)
        {
            taxonomytree.Items.Clear();
            treeviewitem tviI = new treeviewitem() { Header = "I", tid = 1 };
            treeviewitem tviIA = new treeviewitem() { Header = "I.A", tid = 2 };
            treeviewitem tviIA1 = new treeviewitem() { Header = "I.A.1", tid = 3 };
            treeviewitem tviIA2 = new treeviewitem() { Header = "I.A.2", tid = 4 };
            treeviewitem tviIB = new treeviewitem() { Header = "I.B", tid = 5 };

            tviI.Items.Add(tviIA);
            tviIA.Items.Add(tviIA1);
            tviIA.Items.Add(tviIA2);
            tviI.Items.Add(tviIB);

            taxonomytree.Items.Add(tviI);

            //TreeViewItem ti = new TreeViewItem() { Header = "HI" };
            //this.taxonomytree.Items.Add(ti);
        }

我举了这个例子，因为如果我可以使其与这段代码一起工作，那么我可以为了方便起见将代码片段更改为外观

I took this example because if i can make it work with this code then i can change the code fragment to a look for my convenience

 

现在我有一个树状视图

我希望树形视图控件显示数据集中的数据，如下所示:

i want the tree view control to display data from a dataset, something like the following:

public class Taxonomy
    {
        private string _name;
        private string _tid;

        public string Tid
        {
            get { return _tid; }
            set { _tid = value; }
        }

        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }

        public Taxonomy(string name, string tid)
        {
            Name = name;
            Tid = tid;
        }
    }

此处的名称"将是在程序中显示的那个，并且将"tid"显示在程序中.是保留在背景中的东西，当有人单击树视图中的特定节点时将激活并使用

here the "name" would be the one displayed in the program and "tid" is something kept in background that will be activated and used when someone clicks on a particular node in the tree view

 

在分配Treeview控件的属性以及绑定数据时遇到问题

I am having problems in assigning the treeview control the properties and in binding the data

有人可以帮我实现这一目标

can some one help me how to achieve this

 

例如，在上一个示例中，我能够使用:p来实现ListView控件的相同功能:

for example in a previous example i was able to achieve the same for a ListView control using :

                        <ListView ItemsSource="{Binding UserCollection}" SelectedItem="{Binding SelectedUserInfo}" >

然后在主程序中绑定Usercollection和SelectedUserInfo

and then bind the Usercollection and SelectedUserInfo in the main program

 

还有一件事，我想使用c#而不是xaml来实现

One more thing , i want to use c# and not xaml to achieve

 

请帮助！

 

 

 

 

推荐答案

确定

这就是陷阱

我能够在以下事件处理程序的帮助下填充树视图(实际上是我想要的一个按钮):

i am able to populate the treeview with the help of following eventhandler (a button actually, which is what i want):

private void taxonomy_populate_click(object sender, RoutedEventArgs e)
        {
            taxonomytree.Items.Clear();
            treeviewitem tviI = new treeviewitem() { Header = "I", tid = 1 };
            treeviewitem tviIA = new treeviewitem() { Header = "I.A", tid = 2 };
            treeviewitem tviIA1 = new treeviewitem() { Header = "I.A.1", tid = 3 };
            treeviewitem tviIA2 = new treeviewitem() { Header = "I.A.2", tid = 4 };
            treeviewitem tviIB = new treeviewitem() { Header = "I.B", tid = 5 };

            tviI.Items.Add(tviIA);
            tviIA.Items.Add(tviIA1);
            tviIA.Items.Add(tviIA2);
            tviI.Items.Add(tviIB);

            taxonomytree.Items.Add(tviI);
        }

我已经创建了一个上下文菜单，如下所示:

and i have made a context menu, something like this:

private void Delete_taxonomy(object sender, RoutedEventArgs e)
        {
            try {
                Taxonomy taxo = taxonomytree.SelectedItem as Taxonomy;
                if (taxo != null)
                {
                    System.Windows.Forms.MessageBox.Show("" + taxo.Tid);
                }                
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(""+ex.Message);
            }
            
        }

在这里，我向每个对象发送两个属性:标头和tid

Here i am sending each object with two properties : Header and a tid

我希望标题显示在最终用户的树状视图中，当他单击特定的上下文菜单时，必须分别使用该标题的提示

I want the header to be displayed to the end user in the treeview and when he click a particular context menu the tid must be used respective of that header

 

这可能吗

 

请帮助

 

 

 

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