用連結串列實現揹包，佇列，棧
阿新 • • 發佈：2020-11-04
public class LayUiTableInfo { public int code { get; set; } public string msg { get; set; } public int count { get; set; } public DataTable data { get; set; } }
第二個方法是網上找的, 修改了一下,可以直接碰到複雜一點的聯查 ,還有前端的搜尋,總之就是拼接好sql語句 方法2 效率高於是就用了方法2
/// <summary> ///分頁查詢函式 /// </summary> /// <param name="connStr">資料庫連線字串</param> /// <param name="strSql">sql語句</param> /// <param name="Params">引數</param> /// <param name="pageSize">每頁條數</param> /// <param name="pageIndex">頁碼</param>/// <param name="order">排序欄位</param> /// <param name="sort">排序放</param> /// <returns>備註：查詢效率偏低</returns> public DataTable Pagination(string strSql, List<SqlParameter> Params, int pageSize, int pageIndex, string order, string sort) { SqlConnection conn= new SqlConnection(connStr); SqlCommand cmd = new SqlCommand(); SqlDataAdapter ada = new SqlDataAdapter(cmd); DataTable dt = new DataTable(); cmd.Connection = conn; string sqlFinal = string.Format(@"WITH tmp2 as( SELECT ROW_NUMBER() OVER(ORDER BY {1} {2}) AS rownum,* from ({0}) tmp1) select (select count(*) from tmp2)total,* from tmp2 where tmp2.rownum BETWEEN @startRow and @endRow", strSql, order, sort); Params.Add(new SqlParameter("@startRow", (pageIndex - 1) * pageSize + 1) { SqlDbType = SqlDbType.Int }); Params.Add(new SqlParameter("@endRow", pageIndex * pageSize) { SqlDbType = SqlDbType.Int }); cmd.CommandText = sqlFinal; for (int i = 0; i < Params.Count; i++) { cmd.Parameters.Add(Params[i]); } ada.Fill(dt); return dt; } /// <summary> /// 分頁查詢函式 /// </summary> /// <param name="connStr">資料庫連線字串</param> /// <param name="strSql">sql語句</param> /// <param name="Params">引數</param> /// <param name="pageSize">每頁條數</param> /// <param name="pageIndex">頁碼</param> /// <param name="order">排序欄位</param> /// <param name="sort">排序放</param> /// <returns>備註：查詢效率高，但是會建臨時表</returns> public static DataTable Pagination2(string strSql, int pageSize, int pageIndex, string order, string sort) { SqlConnection conn = new SqlConnection(connStr); SqlCommand cmd = new SqlCommand(); SqlDataAdapter ada = new SqlDataAdapter(cmd); DataTable dt = new DataTable(); cmd.Connection = conn; string sqlFinal = string.Format(@"SELECT ROW_NUMBER() OVER(ORDER BY {1} {2}) AS rownum,* into #tmp2 from ({0}) tmp1; select (select count(*) from #tmp2)total,* from #tmp2 where #tmp2.rownum BETWEEN @startRow and @endRow", strSql, order, sort); List<SqlParameter> Params = new List<SqlParameter>(); Params.Add(new SqlParameter("@startRow", (pageIndex - 1) * pageSize + 1) { SqlDbType = SqlDbType.Int }); Params.Add(new SqlParameter("@endRow", pageIndex * pageSize) { SqlDbType = SqlDbType.Int }); cmd.CommandText = sqlFinal; for (int i = 0; i < Params.Count; i++) { cmd.Parameters.Add(Params[i]); } ada.Fill(dt); return dt; }
三,引用config
static string connStr = ConfigurationManager.ConnectionStrings["CMSConnectionString"].ToString();
四 控制器端 加搜尋,功能
[HttpGet] public IHttpActionResult TerminalList() { object rt = null; //if (AuthenticationHelper.IsAuthenticated()) //{ try { int page = QueryHelper.GetInteger("page", 1); //每頁條數 int limit = QueryHelper.GetInteger("limit", 10); //排序欄位 string field = QueryHelper.GetString("field", string.Empty); //排序方式 string order = QueryHelper.GetString("order", string.Empty); //返回列名 string columns = "*"; //表名 string tablename = "AutoWscl_Terminal"; string orderby = "TerminalID"; string where = " 1=1 "; string terminalName = QueryHelper.GetString("terminalName", string.Empty); string portType = QueryHelper.GetString("portType", string.Empty); string messageFlag = QueryHelper.GetString("messageFlag", string.Empty); int isMaster = QueryHelper.GetInteger("isMaster", -1); //裝置名 if (!string.IsNullOrEmpty(terminalName)) { where += " and terminalName like N'%" + SqlHelper.EscapeLikeText(terminalName) + "%'"; } //裝置型別 if (!string.IsNullOrEmpty(portType)) { where += " and portType='" + SqlHelper.EscapeQuotes(portType) + "'"; } //裝置標識 if (!string.IsNullOrEmpty(messageFlag)) { where += " and MessageFlag like N'%" + SqlHelper.EscapeLikeText(SqlHelper.EscapeQuotes(messageFlag)) + "%'"; } //是否是主裝置 if (isMaster != -1) { where += " and isMaster=" +isMaster; } if (!string.IsNullOrEmpty(order) && !string.IsNullOrEmpty(field)) { orderby = field + " " + order; } rt =new TerminalService().GetTableJson(tablename, columns, where, orderby, page, limit); } catch (Exception ex) { rt = ex.Message; } //} //else //{ // rt = "請重新登陸！"; //} return Json(rt); }
五 前端 layui
Html Body: <div class="layui-form"> <!--搜尋條--> <div class="layui-form-item"> <div class="layui-inline"> <label class="layui-form-label">裝置管理</label> <div class="layui-input-inline"> <input type="text" autocomplete="off" id="terminalName" required lay-verify="required" placeholder="請裝置名稱" autocomplete="off" class="layui-input"> </div> <div class="layui-input-inline"> <select id="isMaster" width="20px"> <option value='' disabled selected style='display:none;'>是否是主裝置</option> <option value='1'>是</option> <option value='0'>否</option> </select> </div> </div> <!-- <div class="layui-inline"> <label class="layui-form-label">活動狀態</label> <div class="layui-input-inline"> <select id="Status" lay-verify="required"> <option value="">全部</option> <option value="0">未啟用</option> <option value="1">啟用</option> </select> </div> </div>--> <div class="layui-inline"> <button class="layui-btn" data-type="chaxun" id="chaxun">查詢</button> </div> </div><!--搜尋條結束--> <div> <button class="layui-btn" data-type="addNew" id="addNew">新增新地址</button> </div> <table class="layui-hide" id="LAY_table_user" lay-filter="user"></table> </div> Html Footer: <script src="xxxxy/jquery-2.2.2.min.js"></script> <script type="text/html" id="barDemo"> <a class="layui-btn layui-btn-xs" lay-event="edit">編輯</a> <a class="layui-btn layui-btn-danger layui-btn-xs" lay-event="del">刪除</a> </script> <script> layui.use('table', function(){ var table = layui.table; var $ = layui.$;//等同於jquery //方法級渲染 table.render({ elem: '#LAY_table_user'//table元素的ID ,id: 'testReload'//容器的ID ,url: '/xxxxrminalList' ,height:$(window).height()/2+80 , cols: [[ xxx { field: "terminalCMD", title: "裝置命令", width: 120 }, { field: "messageFlag", title: "裝置標識", width: 200 }, { field: "parentlocation", title: "位置", width: 200 }, { field: "LocationName", title: "採集點", width: 200 }, { title: "操作", width: 180, align: "center", fixed: "right", templet: "#barDemo"} ]] ,page: true ,limits: [10,20,30] ,limit: 10 ,where: { terminalName:$('#terminalName').val(), isMaster:$('#isMaster').val() } }); //監聽工具條 table.on('tool(user)', function(obj){ var data = obj.data; if(obj.event === 'edit'){ window.location.href="/Mxxxxl/edit.aspx?TerminalID="+data.TerminalID; } else if(obj.event === 'del'){ layer.confirm('確定要刪除該地址?', function(index){ //do something deleteActive(data.TerminalID,table); layer.close(index); }); } }); //監聽工具條結束 //監聽排序 table.on('sort(user)', function(obj){ //注：tool是工具條事件名，test是table原始容器的屬性 lay-filter="對應的值" table.reload('testReload', {//重新整理列表 initSort: obj //記錄初始排序，如果不設的話，將無法標記表頭的排序狀態。 layui 2.1.1 新增引數 ,where: { //請求引數 field: obj.field //排序欄位 ,order: obj.type //排序方式 } }); }); //監聽排序結束 //查詢 $("#chaxun").click(function(){ table.reload('testReload', {//重新整理列表 where: { terminalName:$('#terminalName').val(), isMaster:$('#isMaster').val() },page: { curr: 1 //重新從第 1 頁開始 } }); }) $("#addNew").click(function(){ window.location.href="/Managexx.aspx"; }) }); function deleteActive(TerminalID,table){ var indexload = layer.load(1, { shade: [0.3,'#000'], success: function(layero, indexload){ $.ajax({ type: 'Get', async: false, dataType: 'json', url: '/xxal/DelTerminal', data: { TerminalID: TerminalID},//$("form").serialize(), /* processData: false, // 告訴jQuery不要去處理髮送的資料 contentType: false, // 告訴jQuery不要去設定Content-Type請求頭*/ success: function (data) { if(data.res == "ok"){ layer.alert("刪除成功!", function(index){ layer.close(index); layer.close(indexload); table.reload('testReload', { where: { terminalName:$('#terminalName').val() ,Status:$('#Status').val() } }); }); } else{ layer.alert(data.res, function(index){ layer.close(index); layer.close(indexload); table.reload('testReload', { where: { terminalName:$('#terminalName').val() , isMaster:$('#isMaster').val() } }); }); } }, error:function(e){ layer.alert("刪除失敗，請重試!", function(index){ //do something layer.close(index); layer.close(indexload); table.reload('testReload', { where: { terminalName:$('#terminalName').val() , isMaster:$('#isMaster').val() } }); }); } }); } }); } </script>
service 端就是些sql呼叫分頁方法的 忽略