本文实例讲述了C# TreeView无限目录树实现方法。分享给大家供大家参考，具体如下：
#region 绑定客户树 protected void bindTreeView() { TreeView1.Nodes.Clear(); string userid = Session["UserID"].ToString(); string sqlwr = new SY_ADMINUSER().GetUserIDListByLoginUser(userid, "CUSTOMERSERVICE", false); DataTable dt = Maticsoft.DBUtility.DbHelperOra.Query("Select PARENTID,CUSTOMERID,CUSTOMERSHORT,CUSTOMERSERVICE from CU_CUSTOMER where ISDELETE='0' " + sqlwr + " order by CUSTOMERSHORT ").Tables[0]; //定义临时树节点 TreeNode tmpNd; //特殊处理 foreach (DataRow dr in dt.Rows) { DataRow[] drs = dt.Select("CUSTOMERID='" + dr["PARENTID"] + "'"); if (drs.Length == 0) //无上级节点 { dr["PARENTID"] = "0"; } } dt.AcceptChanges(); //从DataTable中得到所有父节点为null的DataRow形成的数组 DataRow[] rows = dt.Select("PARENTID='0'"); //遍历根节点数组 foreach (DataRow row in rows) { tmpNd = new TreeNode(); //给根节点赋值 tmpNd.Value = row["CUSTOMERID"].ToString(); tmpNd.Text = row["CUSTOMERSHORT"].ToString(); tmpNd.Expanded = true; //将节点加入到树中 TreeView1.Nodes.Add(tmpNd); AddTree(dt, TreeView1, tmpNd, row["CUSTOMERID"].ToString()); } } public void AddTree(DataTable dt, TreeView tv, TreeNode pNode, string CUSTOMERID) { DataRow[] rows = dt.Select("PARENTID='" + CUSTOMERID + "'"); TreeNode tmpNd; foreach (DataRow row in rows) { tmpNd = new TreeNode(); //给根节点赋值 tmpNd.Value = row["CUSTOMERID"].ToString(); tmpNd.Text = row["CUSTOMERSHORT"].ToString(); tmpNd.Expanded = true; pNode.ChildNodes.Add(tmpNd); //将节点加入到树中 //TreeView1.Nodes.Add(pNode); AddTree(dt, TreeView1, tmpNd, row["CUSTOMERID"].ToString()); } } #endregion
希望本文所述对大家C#程序设计有所帮助。
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