How to turn off the scrollbars for treeview control?

You can turn off the scroll bars by using the property hidden in the style attribute of Treeview in the following way:

C#

protected void TreeView1_NodeExpanded1(object sender, TreeViewNodeEventArgs e)

    {

TreeView1.Attributes.CssStyle.Add(HtmlTextWriterStyle.Overflow, "hidden");

e.Node.Items.Add(this.BuildTree());

        TreeViewNode node = new TreeViewNode();

        node.Text = "LoadOnDemand";

node.ShowCheckBox = true;

        node.Checked = true;

node.ExpandMode = TreeViewNodeExpandMode.ServerSideCallback;

e.Node.Items.Add(node);

}

VB

Protected Sub TreeView1_NodeExpanded1(ByVal sender As Object, ByVal e As TreeViewNodeEventArgs)

TreeView1.Attributes.CssStyle.Add(HtmlTextWriterStyle.Overflow, "hidden")

e.Node.Items.Add(Me.BuildTree())

Dim node As TreeViewNode = New TreeViewNode()

node.Text = "LoadOnDemand"

node.ShowCheckBox = True

node.Checked = True

node.ExpandMode = TreeViewNodeExpandMode.ServerSideCallback

e.Node.Items.Add(node)

End Sub

Please refer the sample in the following link which illustrates the above:

http://websamples.syncfusion.com/samples/Tools.Web/6.1.0.34/42014/main.htm