NavBarGroup.Expanded Property

Gets or sets a value specifying whether the group is expanded.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v23.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

[DefaultValue(true)]
public bool Expanded { get; set; }

VB.NET

<DefaultValue(True)>
Public Property Expanded As Boolean

Property Value

Type	Default	Description
Boolean	true	true if the group is expanded, otherwise false.

Remarks

Use the Expanded property to expand and collapse groups. The expansion state of a group can be changed if the navbar’s ASPxNavBar.AllowExpanding and the group’s NavBarGroup.AllowExpanding properties are both set to true.

Example

C#

public partial class ASPxperience_LoadOnCallback : System.Web.UI.Page {
     protected void LoadGroupContent(NavBarGroup group) {
         Control control = null;
         if(group.Expanded && group.ContentTemplate == null) {
             switch(group.Name) {
                 case "Group1":
                 case "Group2":
                     control = LoadControl("UserControl.ascx");
                     break;
             }
             group.ContentTemplate = control as ITemplate;
         }
     }
     protected void LoadExpandedGroups() {
         for(int i = 0; i < ASPxNavBar1.Groups.Count; i++)
             LoadGroupContent(ASPxNavBar1.Groups[i]);
     }

     protected void Page_Load(object sender, EventArgs e) {
         LoadExpandedGroups();
     }
     protected void ASPxNavBar1_ExpandedChanged(object source, 
     DevExpress.Web.NavBarGroupEventArgs e) {
         LoadGroupContent(e.Group);
     }
}

VB.NET

Partial Public Class ASPxperience_LoadOnCallback
    Inherits System.Web.UI.Page
     Protected Sub LoadGroupContent(ByVal group As NavBarGroup)
         Dim control As Control = Nothing
         If group.Expanded AndAlso group.ContentTemplate Is Nothing Then
             Select Case group.Name
                 Case "Group1", "Group2"
                     control = LoadControl("UserControl.ascx")
             End Select
             group.ContentTemplate = TryCast(control, ITemplate)
         End If
     End Sub
     Protected Sub LoadExpandedGroups()
         For i As Integer = 0 To ASPxNavBar1.Groups.Count - 1
             LoadGroupContent(ASPxNavBar1.Groups(i))
         Next i
     End Sub

     Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
         LoadExpandedGroups()
     End Sub
     Protected Sub ASPxNavBar1_ExpandedChanged(ByVal source As Object, ByVal e As DevExpress.Web.NavBarGroupEventArgs)
         LoadGroupContent(e.Group)
     End Sub
End Class