NavBarGroup.Items Property

Gets the collection of items within the group and provides indexed access to them.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v19.2.dll

Declaration

C#

public NavBarItemCollection Items { get; }

VB.NET

Public ReadOnly Property Items As NavBarItemCollection

Property Value

Type	Description
NavBarItemCollection	A NavBarItemCollection object representing the collection of the group’s items.

Remarks

The Items property provides access to a collection that contains all the items of the current group. This collection provides standard means to manipulate (add or remove) items within a group. A particular item can be accessed using index notation.

If you need to obtain a collection that holds all the items of the navbar control, you can use the ASPxNavBar.Items property.

Example

This example demonstrates how to modify the ASPxNavBar‘s group header content.

C#

using DevExpress.Web.ASPxNavBar;
...
protected void Page_Load(object sender, EventArgs e) {
     NavBarGroup group1 = new NavBarGroup("group1", "group1");
     NavBarItem item1 = new NavBarItem("item1", "item1");

     ASPxNavBar1.Groups.Add(group1);
     group1.Items.Add(item1);

     group1.HeaderTemplate = new MyTemplate();
     group1.HeaderTemplateCollapsed = new MyTemplate1();

}

public class MyTemplate : ITemplate {
     void ITemplate.InstantiateIn(Control container) {
          Label label = new Label();
          label.Text = "The group is expanded";
          container.Controls.Add(label);
     }
}

public class MyTemplate1 : ITemplate {
     void ITemplate.InstantiateIn(Control container) {
          Label label2 = new Label();
          label2.Text = "The group is collapsed";
          container.Controls.Add(label2);
     }
}

VB.NET

Imports DevExpress.Web.ASPxNavBar
... 
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
     Dim group1 As New NavBarGroup("group1", "group1")
     Dim item1 As New NavBarItem("item1", "item1")

     ASPxNavBar1.Groups.Add(group1)
     group1.Items.Add(item1)

     group1.HeaderTemplate = New MyTemplate()
     group1.HeaderTemplateCollapsed = New MyTemplate1()

End Sub

Public Class MyTemplate
     Implements ITemplate
     Private Sub InstantiateIn(ByVal container As Control) Implements ITemplate.InstantiateIn
          Dim label As New Label()
          label.Text = "The group is expanded"
          container.Controls.Add(label)
     End Sub
End Class

Public Class MyTemplate1
     Implements ITemplate
     Private Sub InstantiateIn(ByVal container As Control) Implements ITemplate.InstantiateIn
          Dim label2 As New Label()
          label2.Text = "The group is collapsed"
          container.Controls.Add(label2)
     End Sub
End Class

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Items property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

XAF_how-to-change-navigation-control-appearance-e240/CS/CustomizeNavigationControl.Module.Web/Controllers/WebCustomizeNavBarController.cs#L25

foreach(NavBarGroup group in navBar.Groups) {
    foreach(NavBarItem item in group.Items) {
        if(item is NavBarTreeViewItem) {

VB.NET

XAF_how-to-change-navigation-control-appearance-e240/VB/CustomizeNavigationControl.Module.Web/Controllers/WebCustomizeNavBarController.vb#L27

For Each group As NavBarGroup In navBar.Groups
    For Each item As NavBarItem In group.Items
        If TypeOf item Is NavBarTreeViewItem Then