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How to select tree nodes in TreeView using code behind
The TreeView component provides support to select tree nodes in both client-side and server-side. You can select the tree nodes using the SelectedNode property of TreeView component. The following code sample demonstrates how to select the tree nodes using code behind.
<ej:TreeView ID="TreeView1" runat="server" DataTextField="Text" DataIdField="Id" DataParentIdField="Parent" DataExpandedField="Expanded" DataHasChildField="HasChild"></ej:TreeView>
Select tree nodes using the SelectedNode property
protected void Page_Load(object sender, EventArgs e)
{
List<LoadData> treeData = new List<LoadData>();
treeData.Add(new LoadData { Id = 1, Parent = 0, Text = "Sendeos", Expanded = true });
treeData.Add(new LoadData { Id = 2, Parent = 1, Text = "Masroig" });
treeData.Add(new LoadData { Id = 3, Parent = 1, Text = "Brazal Foig" });
treeData.Add(new LoadData { Id = 4, Parent = 1, Text = "Rec Nou" });
TreeView1.Fields.DataSource = treeData;
if (!IsPostBack)
TreeView1.SelectedNode = 0;
else
TreeView1.SelectedNode = 1;
}
