ASP.NET MVC easyUI-datagrid 的当前页合计and总合计

一、HTML代码

 <table id="dg" class="easyui-datagrid" style="width: 100%; height: 400px;" data-options="">
                 <thead>
                     <tr>
                         <th data-options="field:'DeviceId',checkbox:true"></th>
                         <th data-options="field:'DeviceName', width:120,align:'center'" >名称</th>
                         <th data-options="field:'DeviceUnitName', width:80,align:'center'">单位</th>
                         <th data-options="field:'MakePlace', width:120,align:'center'">产地</th>
                           <th data-options="field:'OriginalValue',width:90,align:'center'">资产原值</th>
                         <th data-options="field:'BuyTime', width:120,align:'center'">购置日期</th>

                     </tr>
                 </thead>
             </table>

二、JS代码：showFooter: true,代表grid添加总合计行。

 $(".easyui-datagrid").datagrid({
                 rownumbers: true,
                 singleSelect: false,
                 fitColumns: false,
                 idField: 'DeviceId',
                 method: 'post',
                 url: '/Admin/Report/DeviceDetialListSearch',
                 remoteSort: false,
                 multiSort: false,
                showFooter: true,
                 pagination: true,
                 pageSize: ,
                 pageList: [,,],
                 queryParams: {
                     'DeviceIdList':"",
                 'DeviceName':$("#DeviceName").combobox('getValue'),

                 },
                 onLoadSuccess: function () {
                     //$("#dg").datagrid('clearChecked');//清除复选框
                     //$("#dg").datagrid('load');
                 }
             });

三、后台Controller函数 DeviceDetialListSearch(); StringBuilder jsonBuilder 就是要添加的Footer。和分页一起整合成Json传到前台datagrid，会自动识别。PageCount 是当前页行数，PageValues就是当前页 原值那一列 OriginalValue的总合计。SearchForDetail()求得是当前页的数据。SearchForDetailSum()求得是总合计。

  public ActionResult DeviceDetialListSearch()
         {
             DataTable dt = new DataTable();
             FADeviceInfoModel InfoModel = new FADeviceInfoModel();
             string DeviceIdList = Request["DeviceIdList"];

             int pageSize = int.Parse(Request["rows"]);
             int nowPage = int.Parse(Request["page"]);
             int recordCount = ;  //搜索条件下的总记录数量
             dt = InfoModel.SearchForDetail(pageSize, nowPage, out recordCount, DeviceIdList,Request["DeviceName"]);
             //当前页统计
             string PageValues = "";
             int PageCount = ;
             if (dt != null)
             {
                 PageValues = dt.Compute("Sum(OriginalValue)", "").ToString();
                 PageCount = dt.Rows.Count;
             }

             DataTable DtTotal = InfoModel.SearchForDetailSum(DeviceIdList,Request["DeviceName"]);

             StringBuilder jsonBuilder = new StringBuilder();
             # region 当前页总合计
             jsonBuilder.Append("{");
             jsonBuilder.Append("\"");
             jsonBuilder.Append("DeviceName");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append("当前页总合计");
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("DeviceUnitName");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append("数量");
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("MakePlace");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append(PageCount);
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("OriginalValue");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append("原值");
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("BuyTime");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append(PageValues);
             jsonBuilder.Append("\"");
             jsonBuilder.Append("},");
             #endregion

             #region 总合计
             jsonBuilder.Append("{");
             jsonBuilder.Append("\"");
             jsonBuilder.Append("DeviceName");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append("总合计");
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("DeviceUnitName");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append("数量");
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("MackePlace");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append(DtTotal.Rows[]["SumCount"]);
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("OriginalValue");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append("原值");
             jsonBuilder.Append("\",");

             jsonBuilder.Append("\"");
             jsonBuilder.Append("BuyTime");
             jsonBuilder.Append("\":\"");
             jsonBuilder.Append(DtTotal.Rows[]["SumOriginalValue"]);
             jsonBuilder.Append("\"");
             jsonBuilder.Append("}");
             #endregion 

             return Content(MyJson.DataTableToJsonByPage(dt, recordCount, jsonBuilder.ToString()));
         }

四、Model函数：SearchForDetail()求得是当前页的数据。

  public DataTable SearchForDetail(int pageSize, int nowPage, out int recordCount, string DeviceIdList, string DeviceName)
         {
             string sqlCondition = " ";
             if (DeviceIdList != null && !DeviceIdList.Equals(""))
                 sqlCondition += " and FADeviceInfo.DeviceId not in (" + DeviceIdList + ")";
             if (DeviceName != null && !DeviceName.Equals(""))
                 sqlCondition += " and (FADeviceInfo.DeviceName like '%" + DeviceName + "%' or FADeviceInfo.DeviceInputCode like '%" + DeviceName + "%')";

             string sqlOn = " left join FADepartment on FADeviceInfo.DepartmentId=FADepartment.DepartmentId ";
             sqlOn += " left join FADeviceUnit on FADeviceInfo.DeviceUnitId=FADeviceUnit.DeviceUnitId ";

             string sqlOrder = " order by DeviceId desc ";
             string sqlResult = " DeviceId,DeviceStatus,DeviceCode,DeviceName,DepartmentName,DeviceSpec,DeviceUnitName,OriginalValue,MakePlace,BuyTime,FinancialCode ";

             string sqlSon = "(select top " + (nowPage - ) * pageSize + " DeviceId from FADeviceInfo " + sqlOn + " where 1 = 1 " + sqlCondition + sqlOrder + ")";
             string sql = " select top " + pageSize + sqlResult + " from FADeviceInfo  " + sqlOn + " where DeviceId not in " + sqlSon + sqlCondition + sqlOrder;
             string sqlCount = "select count(*) from FADeviceInfo " + sqlOn + " where 1 = 1 " + sqlCondition;

             DataTable dataTable = new DataTable();
             dataTable = db.MyExecuteQuery(sql);
             recordCount =db.GetCount(sqlCount);
             return dataTable;
         }

SearchForDetailSum()求得是总合计。

 public DataTable SearchForDetailSum(string DeviceIdListe, string DeviceName)
        {
            string sqlCondition = " 1=1 ";
            if (DeviceIdList != null && !DeviceIdList.Equals(""))
                sqlCondition += " and FADeviceInfo.DeviceId not in (" + DeviceIdList + ")";
            if (DeviceName != null && !DeviceName.Equals(""))
                sqlCondition += " and (FADeviceInfo.DeviceName like '%" + DeviceName + "%' or FADeviceInfo.DeviceInputCode like '%" + DeviceName + "%')";

            string sql = " select sum(OriginalValue) as SumOriginalValue,count(*) as SumCount from FADeviceInfo " +
                         " left join FADepartment on FADeviceInfo.DepartmentId=FADepartment.DepartmentId " +
                         " left join FADeviceUnit on FADeviceInfo.DeviceUnitId=FADeviceUnit.DeviceUnitId " +
                         " where " + sqlCondition;

            DataTable dataTable = new DataTable();
            dataTable = db.MyExecuteQuery(sql);
            return dataTable;
        }

五、table转Json函数：参数Footer 就是在 Controller ：DeviceDetialListSearch()函数里拼接的stringBuilder，总合计和当前页合计要怎么写怎么统计，可以自己去拼接，然后传到转换函数里来。

 public static string DataTableToJsonByPage(DataTable dt, int total, string footer)
         {
             StringBuilder jsonBuilder = new StringBuilder();
             //添加表格总行数
             jsonBuilder.Append("{\"total\":" + total + ",\"rows\":");
             //添加行数据
             jsonBuilder.Append("[");
             for (int i = ; i < dt.Rows.Count; i++)
             {
                 jsonBuilder.Append("{");
                 for (int j = ; j < dt.Columns.Count; j++)
                 {
                     jsonBuilder.Append("\"");
                     jsonBuilder.Append(dt.Columns[j].ColumnName);
                     jsonBuilder.Append("\":\"");
                     jsonBuilder.Append(dt.Rows[i][j].ToString());
                     jsonBuilder.Append("\",");
                 }
                 jsonBuilder.Remove(jsonBuilder.Length - , );
                 jsonBuilder.Append("},");
             }
             if (dt.Rows.Count != )
             {
                 jsonBuilder.Remove(jsonBuilder.Length - , );
             }
             jsonBuilder.Append("]");
             //添加Footer
             jsonBuilder.Append(",\"footer\":[");
             jsonBuilder.Append(footer);
             jsonBuilder.Append("]}");

             jsonBuilder = jsonBuilder.Replace("\n", "").Replace("\r", "");
             return jsonBuilder.ToString();
         }

六丶看看效果图