添加项目文件。

HT.Cloud.Service/ChartsManage/HistoryChartsService.cs

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+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+using HT.Cloud.Code;
+using SqlSugar;
+using HT.Cloud.DataBase;
+using HT.Cloud.Domain.ChartsManage;
+using Serenity.Services;
+using iTextSharp.text;
+using HT.Cloud.Domain.DevicesManage;
+using Microsoft.AspNetCore.Mvc;
+
+namespace HT.Cloud.Service.ChartsManage
+{
+    /// <summary>
+    /// 创 建：cdl
+    /// 日 期：2023-02-23 11:10
+    /// 描 述：历史趋势服务类
+    /// </summary>
+    public class HistoryChartsService : BaseService<HistoryChartsEntity>, IDenpendency
+    {
+        public HistoryChartsService(ISqlSugarClient context) : base(context)
+        {
+        }
+
+        public async Task<string> GetAllSubsystemTag()
+        {
+            List<SubsysytemNameList> subsystems = new List<SubsysytemNameList>();
+            var grouped = _context.Queryable<MetaTagEntity>().ToList();
+            List<string> list_name_two = grouped.Select(t => t.Subsystem).GroupBy(c => c).Select(c => c.First()).ToList();
+            int i = 0;
+            foreach (var Meta_Tag in list_name_two)
+            {
+                subsystems.Add(new SubsysytemNameList() { Lable = "a" + i, Value = Meta_Tag });
+                i++;
+            }
+            return subsystems.ToJson();
+        }
+
+        public async Task<string> GetSubsystemAllTag(string subsysytemName)
+        {
+            
+            var subsysname = subsysytemName;
+            var response = _context.Queryable<MetaTagEntity>().Where(x => x.Subsystem == subsysname).Select(x => new { x.TagID, x.Description, x.Units }).ToList();
+            var reList = new List<SubAllTagReturn>();
+            foreach (var subsystem in response)
+            {
+                reList.Add(
+                    new SubAllTagReturn()
+                        {
+                            TagID =(short)subsystem.TagID,
+                            Description = subsystem.Description + $"({subsystem.Units})",
+                            Units = subsystem.Units
+                        }
+                    );
+            }
+            return reList.ToJson();
+        }
+
+        public async Task<string> GetChartsTagValue(short tagid,string startdt, string enddt, int timeinterval)
+        {
+            SugarParameter[] sqlParameters =
+            {
+                new SugarParameter("@enddt",enddt),
+                new SugarParameter("@Htagid",tagid),
+                new SugarParameter("@startdt",startdt),
+                new SugarParameter("@timeinterval",timeinterval)
+            };
+            var dt = _context.Ado.UseStoredProcedure().GetDataTable("Query_Group_Tag", sqlParameters);
+            //*
+            //var ds = db.SqlQuery("Query_Report_Period", sqlParameters);///
+            
+            var valuelist = DataTableConvertModel<HDATETIMEVALUE>.ConvertDataTableToList(dt);
+            var resultlist = new List<ChartData>();
+            foreach (var value in valuelist)
+            {
+                resultlist.Add(new ChartData()
+                {
+                    name = value.HDATETIME,
+                    value = value.VALUE
+                });
+            }
+            return resultlist.ToJson();
+        }
+
+        public class SubsysytemNameList
+        {
+            public string Lable { get; set; }
+            public string Value { get; set; }
+        }
+
+        public class SubAllTagReturn
+        {
+            //x.TagID, x.Description, x.Units
+            public short TagID { get; set; }
+            public string Description { get; set; }
+            public string Units { get; set; }
+        }
+
+        public class ChartData
+        {
+            public decimal value { get; set; }
+            public String name { get; set; }
+        }
+
+        public class HDATETIMEVALUE
+        {
+            public String HDATETIME { get; set; }
+            public decimal VALUE { get; set; }
+        }
+    }
+}