Creating Items at Runtime

• Dec 17, 2020
• 2 minutes to read

In an Unbound Mode, ASPxMenu allows you to create items with specified settings at runtime, using the MenuItemCollection.Add methods. You can create all the items at one time or create items dynamically on demand.

The code sample below demonstrates how to populate an ASPxMenu control with items manually, in unbound mode. The image below shows the result.

C#

protected void Page_Load(object sender, EventArgs e)
{
     if (!IsPostBack) {
          CreateMenu();
     }
}

//Create Menu initial structure. 
void CreateMenu() {
     string[] Items = { "Home", "News", "Products", "Client Center" };
     foreach (string ItemText in Items) {
          MyMenu.Items.Add(ItemText);
     }
     MyMenu.Items.FindByText("News").Items.Add("Subscriptions");
     MenuItem[] ProductsItems = { 
          new MenuItem("Downloads"), 
          new MenuItem("Support"), 
          new MenuItem("Order") 
     };
     MyMenu.Items.FindByText("Products").Items.Add(ProductsItems);
}

//Add a new item
protected void btnAddItem_Click(object sender, EventArgs e) {
     if ((MyMenu.SelectedItem != null) && (tbItemName.Text != "")) {
          MyMenu.SelectedItem.Items.Add(tbItemName.Text);
     }
} 

VB.NET

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
     If (Not IsPostBack) Then
          CreateMenu()
     End If
End Sub

'Create Menu initial structure. 
Private Sub CreateMenu()
     Dim Items() As String = { "Home", "News", "Products", "Client Center" }
     For Each ItemText As String In Items
          MyMenu.Items.Add(ItemText)
     Next ItemText
     MyMenu.Items.FindByText("News").Items.Add("Subscriptions")
     Dim ProductsItems() As MenuItem = { New MenuItem("Downloads"), New MenuItem("Support"), New MenuItem("Order") }
     MyMenu.Items.FindByText("Products").Items.Add(ProductsItems)
End Sub

'Add a new item
Protected Sub btnAddItem_Click(ByVal sender As Object, ByVal e As EventArgs)
     If (MyMenu.SelectedItem IsNot Nothing) AndAlso (tbItemName.Text <> "") Then
          MyMenu.SelectedItem.Items.Add(tbItemName.Text)
     End If
End Sub

ASPX

<dx:ASPxMenu ID="MyMenu" runat="server" AllowSelectItem="True">
</dx:ASPxMenu>
<br />
<dx:ASPxTextBox ID="tbItemName" runat="server" Width="170px">
</dx:ASPxTextBox>
<br />
<dx:ASPxButton ID="btnAddItem" runat="server" onclick="btnAddItem_Click" Text="Add Subitem">
</dx:ASPxButton>