后台SQL的信息：
html:(body内)
<body>
<form id="form1" runat="server">
<asp:TreeView ID="tvMenu" runat="server" ImageSet= "Faq" ShowLines="True" ExpandDepth="1" Target="middle" Height="324px" OnLoad="tvMenu_Load" Width="385px" >
<ParentNodeStyle Font-Bold="False" ForeColor ="Red" />
<HoverNodeStyle Font-Underline="True" ForeColor="Blue" />
<SelectedNodeStyle Font-Underline="True" HorizontalPadding="0px" VerticalPadding="0px" ForeColor = "Green" ImageUrl="~/Images/bt_mline_on.gif"/>
<NodeStyle Font-Names="Tahoma" Font-Size="8pt" ForeColor="DarkBlue" HorizontalPadding="5px"
NodeSpacing="0px" VerticalPadding="0px" />
<RootNodeStyle BorderStyle="Dashed" />
</asp:TreeView>
</form>
</body>
cs代码:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class treeviewdg : System.Web.UI.Page
{
SqlConnection Conn = new SqlConnection("server=A3161228A954417;database=SMS;uid=sa;pwd=sa");
DataSet ds;
protected void Page_Load(object sender, EventArgs e)
{
}
private DataSet createDataSet()
{
ds = new DataSet();
string sqlStr = "select * from Tree ";
SqlDataAdapter cmdSelect = new SqlDataAdapter(sqlStr, Conn);
cmdSelect.Fill(ds, "Tree");
return ds;
}
protected void InitTree(TreeNodeCollection Nds, string parentId)//用递归方法动态生成节点
{
DataView dv = new DataView();
TreeNode tmpNode;
dv.Table = ds.Tables["Tree"];
dv.RowFilter = "pat_id=" + "'" + parentId + "'";
foreach (DataRowView drv in dv)
{
tmpNode = new TreeNode();
tmpNode.Value = drv["node_id"].ToString();
tmpNode.Text = drv["node_name"].ToString();
tmpNode.NavigateUrl =drv["url"].ToString();
Nds.Add(tmpNode);
this.InitTree(tmpNode.ChildNodes, tmpNode.Value);
}
}
protected void tvMenu_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
tvMenu.Dispose();
Conn.Open();
this.createDataSet();
Conn.Close();
this.InitTree(tvMenu.Nodes, "0");
}
}
}
html:(body内)
<body> <form id="form1" runat="server"> <asp:TreeView ID="tvMenu" runat="server" ImageSet= "Faq" ShowLines="True" ExpandDepth="1" Target="middle" Height="324px" OnLoad="tvMenu_Load" Width="385px" > <ParentNodeStyle Font-Bold="False" ForeColor ="Red" /> <HoverNodeStyle Font-Underline="True" ForeColor="Blue" /> <SelectedNodeStyle Font-Underline="True" HorizontalPadding="0px" VerticalPadding="0px" ForeColor = "Green" ImageUrl="~/Images/bt_mline_on.gif"/> <NodeStyle Font-Names="Tahoma" Font-Size="8pt" ForeColor="DarkBlue" HorizontalPadding="5px" NodeSpacing="0px" VerticalPadding="0px" /> <RootNodeStyle BorderStyle="Dashed" /> </asp:TreeView> </form></body>using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class treeviewdg : System.Web.UI.Page{
SqlConnection Conn = new SqlConnection("server=A3161228A954417;database=SMS;uid=sa;pwd=sa"); DataSet ds; protected void Page_Load(object sender, EventArgs e) {
} private DataSet createDataSet() { ds = new DataSet(); string sqlStr = "select * from Tree "; SqlDataAdapter cmdSelect = new SqlDataAdapter(sqlStr, Conn); cmdSelect.Fill(ds, "Tree"); return ds; } protected void InitTree(TreeNodeCollection Nds, string parentId)//用递归方法动态生成节点 { DataView dv = new DataView(); TreeNode tmpNode; dv.Table = ds.Tables["Tree"]; dv.RowFilter = "pat_id=" + "'" + parentId + "'"; foreach (DataRowView drv in dv) { tmpNode = new TreeNode(); tmpNode.Value = drv["node_id"].ToString(); tmpNode.Text = drv["node_name"].ToString(); tmpNode.NavigateUrl =drv["url"].ToString(); Nds.Add(tmpNode); this.InitTree(tmpNode.ChildNodes, tmpNode.Value); } } protected void tvMenu_Load(object sender, EventArgs e) { if (!IsPostBack) { tvMenu.Dispose(); Conn.Open(); this.createDataSet(); Conn.Close(); this.InitTree(tvMenu.Nodes, "0"); } }}
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