TreeViewNodeCollection.Add(String, String, String) Method

Adds a new node to the collection and specifies the node’s display text, name and associated image.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

public TreeViewNode Add(
    string text,
    string name,
    string imageUrl
)

VB.NET

Public Function Add(
    text As String,
    name As String,
    imageUrl As String
) As TreeViewNode

Parameters

Name	Type	Description
text	String	A String value specifying the node’s display text. Initializes the node’s TreeViewNode.Text property.
name	String	A String value specifying the name which identifies the created node. Initializes the node’s TreeViewNode.Name property.
imageUrl	String	A String value specifying the path to the node image. Initializes the ImagePropertiesBase.Url property of the node’s TreeViewNode.Image.

Returns

Type	Description
TreeViewNode	A TreeViewNode object representing the newly created node.

Remarks

Use the Add method to add a new node with the specified settings to the end of the TreeViewNodeCollection object.

Example

The code below adds a new node to the ASPxTreeView’s child node collection, initializes its Text property, and then adds child nodes with different sets of defined parameters to the added node.

The image below shows the result:

C#

using DevExpress.Web.ASPxTreeView;

public partial class MyMail : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e) {
    }
    protected void Create_Nodes() {
        TreeViewNode node = ASPxTreeView1.Nodes.Add();
        node.Text = "MyMail";
        node.Nodes.Add("Inbox", "Mail1", "~/Images/Inbox.png", "Inbox.aspx", "_self");
        node.Nodes.Add("Outbox", "Mail2", "~/Images/Outbox.png", "Outbox.aspx");
        node.Nodes.Add("Deleted Items", "Mail3", "~/Images/Deleted.png");
        node.Nodes.Add("Draft", "Mail4");
        node.Nodes.Add("Junk E-mail");
    }
}

ASPX

<dx:ASPxTreeView ID="ASPxTreeView1" runat="server">
</dx:ASPxTreeView>