{"id":23964,"date":"2024-03-16T02:19:42","date_gmt":"2024-03-16T02:19:42","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/data-binding-and-dynamic-addition-of-data-in-treeview-control-in-wpf\/"},"modified":"2024-03-22T02:32:39","modified_gmt":"2024-03-22T02:32:39","slug":"data-binding-and-dynamic-addition-of-data-in-treeview-control-in-wpf","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/data-binding-and-dynamic-addition-of-data-in-treeview-control-in-wpf\/","title":{"rendered":"Data binding and dynamic addition of data in TreeView control in WPF."},"content":{"rendered":"<p>You can achieve data binding and dynamically adding data to the TreeView control in WPF by following these steps:<\/p>\n<ol>\n<li>Define the TreeView control in XAML.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">TreeView<\/span> <span class=\"hljs-attr\">x:Name<\/span>=<span class=\"hljs-string\">\"MyTreeView\"<\/span> <span class=\"hljs-attr\">ItemsSource<\/span>=<span class=\"hljs-string\">\"{Binding TreeData}\"<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">TreeView.ItemTemplate<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">HierarchicalDataTemplate<\/span> <span class=\"hljs-attr\">ItemsSource<\/span>=<span class=\"hljs-string\">\"{Binding Children}\"<\/span>&gt;<\/span>\r\n            <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">TextBlock<\/span> <span class=\"hljs-attr\">Text<\/span>=<span class=\"hljs-string\">\"{Binding Name}\"<\/span> \/&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">HierarchicalDataTemplate<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">TreeView.ItemTemplate<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">TreeView<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>Define data model and data source in the backend code.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">TreeNode<\/span>\r\n{\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-built_in\">string<\/span> Name { <span class=\"hljs-keyword\">get<\/span>; <span class=\"hljs-keyword\">set<\/span>; }\r\n    <span class=\"hljs-keyword\">public<\/span> ObservableCollection&lt;TreeNode&gt; Children { <span class=\"hljs-keyword\">get<\/span>; <span class=\"hljs-keyword\">set<\/span>; }\r\n}\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">ViewModel<\/span>\r\n{\r\n    <span class=\"hljs-keyword\">public<\/span> ObservableCollection&lt;TreeNode&gt; TreeData { <span class=\"hljs-keyword\">get<\/span>; <span class=\"hljs-keyword\">set<\/span>; }\r\n\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title\">ViewModel<\/span>()<\/span>\r\n    {\r\n        <span class=\"hljs-comment\">\/\/ \u521d\u59cb\u5316\u6570\u636e\u6e90<\/span>\r\n        TreeData = <span class=\"hljs-keyword\">new<\/span> ObservableCollection&lt;TreeNode&gt;\r\n        {\r\n            <span class=\"hljs-keyword\">new<\/span> TreeNode\r\n            {\r\n                Name = <span class=\"hljs-string\">\"Parent 1\"<\/span>,\r\n                Children = <span class=\"hljs-keyword\">new<\/span> ObservableCollection&lt;TreeNode&gt;\r\n                {\r\n                    <span class=\"hljs-keyword\">new<\/span> TreeNode { Name = <span class=\"hljs-string\">\"Child 1\"<\/span> },\r\n                    <span class=\"hljs-keyword\">new<\/span> TreeNode { Name = <span class=\"hljs-string\">\"Child 2\"<\/span> }\r\n                }\r\n            },\r\n            <span class=\"hljs-keyword\">new<\/span> TreeNode\r\n            {\r\n                Name = <span class=\"hljs-string\">\"Parent 2\"<\/span>,\r\n                Children = <span class=\"hljs-keyword\">new<\/span> ObservableCollection&lt;TreeNode&gt;\r\n                {\r\n                    <span class=\"hljs-keyword\">new<\/span> TreeNode { Name = <span class=\"hljs-string\">\"Child 3\"<\/span> },\r\n                    <span class=\"hljs-keyword\">new<\/span> TreeNode { Name = <span class=\"hljs-string\">\"Child 4\"<\/span> }\r\n                }\r\n            }\r\n        };\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>Set the data context in the constructor of the window or page and dynamically add data.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title\">MainWindow<\/span>()<\/span>\r\n{\r\n    InitializeComponent();\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u6570\u636e\u4e0a\u4e0b\u6587<\/span>\r\n    DataContext = <span class=\"hljs-keyword\">new<\/span> ViewModel();\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u52a8\u6001\u6dfb\u52a0\u6570\u636e<\/span>\r\n    TreeNode newNode = <span class=\"hljs-keyword\">new<\/span> TreeNode { Name = <span class=\"hljs-string\">\"New Node\"<\/span> };\r\n    ((ViewModel)DataContext).TreeData.Add(newNode);\r\n}\r\n<\/code><\/pre>\n<p>By following the above steps, the TreeView control can achieve data binding and dynamically add data in the background.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You can achieve data binding and dynamically adding data to the TreeView control in WPF by following these steps: Define the TreeView control in XAML. &lt;TreeView x:Name=&#8221;MyTreeView&#8221; ItemsSource=&#8221;{Binding TreeData}&#8221;&gt; &lt;TreeView.ItemTemplate&gt; &lt;HierarchicalDataTemplate ItemsSource=&#8221;{Binding Children}&#8221;&gt; &lt;TextBlock Text=&#8221;{Binding Name}&#8221; \/&gt; &lt;\/HierarchicalDataTemplate&gt; &lt;\/TreeView.ItemTemplate&gt; &lt;\/TreeView&gt; Define data model and data source in the backend code. public class TreeNode { public [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-23964","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Data binding and dynamic addition of data in TreeView control in WPF. - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/data-binding-and-dynamic-addition-of-data-in-treeview-control-in-wpf\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Data binding and dynamic addition of data in TreeView control in WPF.\" \/>\n<meta property=\"og:description\" content=\"You can achieve data binding and dynamically adding data to the TreeView control in WPF by following these steps: Define the TreeView control in XAML. &lt;TreeView x:Name=&quot;MyTreeView&quot; ItemsSource=&quot;{Binding TreeData}&quot;&gt; &lt;TreeView.ItemTemplate&gt; &lt;HierarchicalDataTemplate ItemsSource=&quot;{Binding Children}&quot;&gt; &lt;TextBlock Text=&quot;{Binding Name}&quot; \/&gt; &lt;\/HierarchicalDataTemplate&gt; &lt;\/TreeView.ItemTemplate&gt; &lt;\/TreeView&gt; Define data model and data source in the backend code. public class TreeNode { public [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/data-binding-and-dynamic-addition-of-data-in-treeview-control-in-wpf\/\" 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