C# 生成自定義美化DropDownList 下拉框
阿新 • • 發佈:2019-01-02
效果圖:
ASPX程式碼:
<asp:DropDownList ID="drpZhiWutSort" runat="server"></asp:DropDownList>
C#程式碼:
using (LeaderTripDataContext db = new LeaderTripDataContext()) { var getSoStatus = from p in db.ZhiWuList where p.isshow=='Y' select new { p.menuid, p.menuname, p.fathermenuid, p.isshow }; if (getSoStatus.Count() <= 0) { ZhiWuList insert = new ZhiWuList { menuname = "公司職務", fathermenuid = -1, sortid = 1,isshow='Y', addTime = DateTime.Now }; db.ZhiWuList.InsertOnSubmit(insert); db.SubmitChanges(); } DataTable dtSort = SearchDataClass.ToDataTable(getSoStatus); //新增根目錄 DataRow[] drs = dtSort.Select("fathermenuid=-1"); for (var i = 0; i < drs.Length; i++) { string nodeid = drs[i]["menuid"].ToString(); string text = drs[i]["menuname"].ToString(); text = "╋" + text; this.drpZhiWutSort.Items.Add(new ListItem(text, nodeid)); int sonparentid = int.Parse(nodeid); addOtherDll("", sonparentid, dtSort, 1, drpZhiWutSort); } drpZhiWutSort.DataBind(); drpZhiWutSort.Items.Insert(0, new ListItem("-請選擇職務-")); } }
addOtherDll 引用的方法:
//<param name="Pading">空格</param> //<param name="DirId">父路徑ID</param> //<param name="datatable">返回的datatable</param> //<param name="deep">樹形的深度</param> public static void addOtherDll(string Pading, int DirId, DataTable datatable, int deep, DropDownList ddl) { DataRow[] rowlist = datatable.Select("fathermenuid='" + DirId + "'"); foreach (DataRow row in rowlist) { string strPading = ""; for (int j = 0; j < deep; j++) { strPading += " "; //用全形的空格 } //新增節點 ListItem li = new ListItem(strPading + "|--" + row["menuname"].ToString(), row["menuid"].ToString()); ddl.Items.Add(li); //遞迴呼叫addOtherDll函式,在函式中把deep加1 addOtherDll(strPading, Convert.ToInt32(row["menuid"]), datatable, deep + 1, ddl); } }