NodeDataBound

The NodeDataBound fires for every Node that is bound to data. Use the RadSiteMapNodeEventArgs to access the properties of the bound Node. Use the Node's DataItem property to access the underlying object or data row being bound to.

Binding to a database:

C#

protected void RadSiteMap1_NodeDataBound(object sender, RadSiteMapNodeEventArgs e) 
{ 
    DataRowView nodeData = e.Node.DataItem as DataRowView; 
    e.Node.ToolTip = nodeData["tooltipColumn"].ToString(); 
}

VB.NET

Protected Sub RadSiteMap1_NodeDataBound(ByVal sender As Object, ByVal e As RadSiteMapNodeEventArgs)
    Dim nodeData As DataRowView = TryCast(e.Node.DataItem, DataRowView)
    e.Node.ToolTip = nodeData("tooltipColumn").ToString()
End Sub

Binding to SiteMapDataSource:

C#

protected void RadSiteMap1_NodeDataBound(object sender, Telerik.Web.UI.RadSiteMapNodeEventArgs e)
{ 
    SiteMapNode sitemapNode = e.Node.DataItem as SiteMapNode; 
    e.Node.ToolTip = sitemapNode.Title + " - " + sitemapNode.Url; 
}

VB.NET

Protected Sub RadSiteMap1_NodeDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadSiteMapNodeEventArgs)
    Dim sitemapNode As SiteMapNode = TryCast(e.Node.DataItem, SiteMapNode)
    e.Node.ToolTip = sitemapNode.Title + " - " + sitemapNode.Url
End Sub