Dynamic TreeView Creation

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Dynamic treeviews can be created on the server side or client side. When creating a dynamic treeview on the server side, use a constructor to dynamically create a new instance of the C1TreeView class. For example:

Visual Basic	Copy Code
Namespace TreeViewQuickStart Public Partial Class MainPage Inherits UserControl Public Sub New() InitializeComponent() InitializeTreeView() End Sub Private Sub InitializeTreeView() ' Remove items that were added at design time Tree.Items.Clear() Dim booklist As New C1TreeViewItem() booklist.Header = "Book List" Tree.Items.Add(booklist) ' Adding child items Dim language As New C1TreeViewItem() language.Header = "Language Books" booklist.Items.Add(language) ' Adding child items Dim security As New C1TreeViewItem() security.Header = "Security Books" booklist.Items.Add(security) ' Adding child items Dim classic As New C1TreeViewItem() classic.Header = "Classic Books" booklist.Items.Add(classic) ' Adding child items Dim subclassic As New C1TreeViewItem() subclassic.Header = "Catch-22" classic.Items.Add(subclassic) Dim subclassic2 As New C1TreeViewItem() subclassic2.Header = "The Great Gatsby" classic.Items.Add(subclassic2) End Sub End Class End Namespace

Visual Basic

Copy Code

Namespace TreeViewQuickStart
    Public Partial Class MainPage
        Inherits UserControl
        Public Sub New()
            InitializeComponent()
              
            InitializeTreeView()
        End Sub
        Private Sub InitializeTreeView()
          
            ' Remove items that were added at design time
          
            Tree.Items.Clear()
          
            Dim booklist As New C1TreeViewItem()
            booklist.Header = "Book List"
            Tree.Items.Add(booklist)
          
            ' Adding child items
            Dim language As New C1TreeViewItem()
            language.Header = "Language Books"
            booklist.Items.Add(language)
          
            ' Adding child items
            Dim security As New C1TreeViewItem()
            security.Header = "Security Books"
            booklist.Items.Add(security)
          
            ' Adding child items
            Dim classic As New C1TreeViewItem()
            classic.Header = "Classic Books"
            booklist.Items.Add(classic)
          
            ' Adding child items
            Dim subclassic As New C1TreeViewItem()
            subclassic.Header = "Catch-22"
            classic.Items.Add(subclassic)
            Dim subclassic2 As New C1TreeViewItem()
            subclassic2.Header = "The Great Gatsby"
            classic.Items.Add(subclassic2)
        End Sub
    End Class
End Namespace

C#	Copy Code
namespace TreeViewQuickStart { public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); InitializeTreeView(); } void InitializeTreeView() { // Remove items that were added at design time Tree.Items.Clear(); C1TreeViewItem booklist = new C1TreeViewItem(); booklist.Header = "Book List"; Tree.Items.Add(booklist); // Adding child items C1TreeViewItem language = new C1TreeViewItem(); language.Header = "Language Books"; booklist.Items.Add( language ); // Adding child items C1TreeViewItem security = new C1TreeViewItem(); security.Header = "Security Books"; booklist.Items.Add(security); // Adding child items C1TreeViewItem classic = new C1TreeViewItem(); classic.Header = "Classic Books"; booklist.Items.Add(classic); // Adding child items C1TreeViewItem subclassic = new C1TreeViewItem(); subclassic.Header = "Catch-22"; classic.Items.Add(subclassic); C1TreeViewItem subclassic2 = new C1TreeViewItem(); subclassic2.Header = "The Great Gatsby"; classic.Items.Add(subclassic2); } } }

Copy Code

namespace TreeViewQuickStart
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            InitializeTreeView();
          
        }
       void InitializeTreeView()
       {

            // Remove items that were added at design time

            Tree.Items.Clear();
          
            C1TreeViewItem booklist = new C1TreeViewItem();
            booklist.Header = "Book List";
           Tree.Items.Add(booklist);
           // Adding child items
          C1TreeViewItem language = new C1TreeViewItem();
          language.Header = "Language Books";
          booklist.Items.Add( language );

         // Adding child items
         C1TreeViewItem security = new C1TreeViewItem();
         security.Header = "Security Books";
         booklist.Items.Add(security);

        // Adding child items
        C1TreeViewItem classic = new C1TreeViewItem();
        classic.Header = "Classic Books";
        booklist.Items.Add(classic);

       // Adding child items
       C1TreeViewItem subclassic = new C1TreeViewItem();
       subclassic.Header = "Catch-22";
       classic.Items.Add(subclassic);
       C1TreeViewItem subclassic2 = new C1TreeViewItem();
       subclassic2.Header = "The Great Gatsby";
       classic.Items.Add(subclassic2);        
}    
    }
}