TextBox下拉绑定TreeView进行选择

<div style="position: relative">
                        <asp:TextBox ID="txtDepartment" runat="server" ReadOnly="true" Text="总部" onclick="document.getElementById('div_treeview').style.display = 'block'"></asp:TextBox>
                        <div runat="server" id="div_treeview">
                            <asp:TreeView ID="Bumen_TreeView" runat="server" BackColor="#f7f3ef" OnSelectedNodeChanged="Bumen_TreeView_SelectedNodeChanged">
                            </asp:TreeView>
                            <asp:HiddenField ID="Hid_DeptID" runat="server" Value="" />
                        </div>

                    </div>

pageload里面：

div_treeview.Style.Add(HtmlTextWriterStyle.BackgroundColor, "#ddd");
        div_treeview.Style.Add(HtmlTextWriterStyle.Display, "none");
        div_treeview.Style.Add(HtmlTextWriterStyle.Position, "absolute");


        if (!IsPostBack)
        {
            Bumen_TreeView.Nodes.Add(new EmployeeInfo().initBumenTree(Bumen_TreeView, Hid_DeptID.Value));
        }

定义选择时值的获取：

protected void Bumen_TreeView_SelectedNodeChanged(object sender, EventArgs e)
    {
        Hid_DeptID.Value = Bumen_TreeView.SelectedValue;
        txtDepartment.Text = Bumen_TreeView.SelectedNode.Text;
    }