制作动态的TreeView代码,CSharp代码库,德仔网

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【CSharp】制作动态的TreeView

作者:东昌 / 发布于2015/11/13/ 776


	首先向服务器发送请求：

	DataTable dt = DeserializeDataTable(GetMenuData(DefineConst.guser));//向服务器发送请求获得datatable对象
	/// <summary>
	 /// 反序列化DataTable
	 /// </summary>
	 /// <param name="pXml">序列化的DataTable</param>
	 /// <returns>DataTable</returns>
	 public static DataTable DeserializeDataTable(string pXml)
	 {
	 DataTable dt = new DataTable();
	 try
	 {
	 StringReader strReader = new StringReader(pXml);
	 XmlReader xmlReader = XmlReader.Create(strReader);
	 XmlSerializer serializer = new XmlSerializer(typeof(DataTable));
	
	 dt = serializer.Deserialize(xmlReader) as DataTable;

	 return dt;
	 }
	 catch (Exception e)
	 {
	 return dt;
	 }
	 }

	

	

	服务器处理内容：

	public string GetMenuData(string userid)
	 {
	 string groupid = DefineConst.gusergroupid;

	 string sql = @"select rightid,rightname,form_id,parentid
	 from mix_right_info";

	 sql = string.Format(sql, groupid, userid);

	 DataSet ds =getSet(sql);

	 DataTable dt = new DataTable();

	 if (ds.Tables[0] != null && ds.Tables[0].Rows.Count > 0)
	 {
	 dt = ds.Tables[0];
	 }

	 dt.TableName = "TreeView";
	 return SerializeDataTableXml(dt);
	 }

	 /// <summary>
	 /// 序列化DataTable
	 /// </summary>
	 /// <param name="pDt">包含数据的DataTable</param>
	 /// <returns>序列化的DataTable</returns>
	 public static string SerializeDataTableXml(DataTable dt)
	 {
	 // 序列化DataTable
	 StringBuilder sb = new StringBuilder();
	 XmlWriter writer = XmlWriter.Create(sb);
	 XmlSerializer serializer = new XmlSerializer(typeof(DataTable));
	 serializer.Serialize(writer, dt);
	 writer.Close();

	 return sb.ToString();
	 }

	

	

	客户端对DataTable操作生成树状结构：

	CreateMainMenu(dt, tvmenu)
	 /// <summary>
	 /// 生成树形菜单
	 /// </summary>
	 /// <param name="dt">datetable</param>
	 /// <param name="tv">treeview</param>
	 public static bool CreateMainMenu(DataTable dt, TreeView tv)
	 {
	 string parentid = "";
	 foreach (DataRow dr in dt.Rows)
	 {
	 if (dr[3].ToString() == "1")
	 {
	 TreeNode tn = new TreeNode();
	 tn.Name = dr[0].ToString();
	 tn.Text = dr[1].ToString();
	 tn.Tag = dr[2].ToString();
	 parentid = dr[3].ToString();
	 tv.Nodes.Add(tn);
	 tn.ImageIndex = 0;
	 AddSubMenu(tn, dt, dr);
	 }
	 }
	 return true;
	 }
	 /// <summary>
	 /// 生成子菜单
	 /// </summary>
	 /// <param name="tn"></param>
	 /// <param name="dt"></param>
	 /// <param name="dr"></param>
	 private static void AddSubMenu(TreeNode tn, DataTable dt, DataRow dr)
	 {
	 string parentid = "";
	 foreach (DataRow ddr in dt.Rows)
	 {
	 if (ddr[3].ToString() == dr[0].ToString())
	 {
	 //ddr为dr的子节点
	 TreeNode ttn = new TreeNode();
	 ttn.Name = ddr[0].ToString();//ttn.Name = ddr["窗体名称"].ToString();
	 ttn.Text = ddr[1].ToString();//ttn.Text = ddr["权限名称"].ToString();
	 parentid = ddr[3].ToString();//parentid = ddr["父级权限"].ToString();
	 ttn.Tag = ddr[2].ToString();
	 ttn.ImageIndex = 0;
	 ttn.SelectedImageIndex = 1;
	 tn.Nodes.Add(ttn);
	 AddSubMenu(ttn, dt, ddr);
	 }
	 }
	 }

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