添加项目文件。

Service/Implement/MonitorValueService.cs

@@ -0,0 +1,71 @@
+using Model;
+using Model.Entity;
+using ORM;
+using Service.Interface;
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Service.Implement
+{
+    /// <summary>
+    /// 监测数值记录服务实现
+    /// </summary>
+    public class MonitorValueService : BaseService<MonitorValueEntity>, IMonitorValueService
+    {
+        // 继承父类构造函数，注入 SqlSugar 仓储
+        public MonitorValueService(SqlSugarRepository<MonitorValueEntity> repository) : base(repository)
+        {
+        }
+
+        /// <summary>
+        /// 批量插入监测数据
+        /// </summary>
+        public async Task<Result<bool>> InsertRangeAsync(List<MonitorValueEntity> entities)
+        {
+            if (entities == null || entities.Count == 0)
+                return Result<bool>.Success(true);
+
+            try
+            {
+                // 使用 SqlSugar 的批量插入，底层会转换为 BulkCopy 或是批量 SQL，速度极快
+                var result = await _repository.Context.Insertable(entities).ExecuteCommandAsync();
+                return Result<bool>.Success(result > 0);
+            }
+            catch (Exception ex)
+            {
+                return Result<bool>.Error("批量插入监测数据失败", ex);
+            }
+        }
+
+        /// <summary>
+        /// 根据监测通道名称，分页查询历史记录
+        /// </summary>
+        public async Task<Result<List<MonitorValueEntity>>> GetPagedByNameAsync(string monitorName, int pageIndex, int pageSize, RefAsync<int> total)
+        {
+            try
+            {
+                var query = _repository.Entities;
+
+                // 如果传了名字则按名字过滤
+                if (!string.IsNullOrEmpty(monitorName))
+                {
+                    query = query.Where(x => x.MonitorName == monitorName);
+                }
+
+                var list = await query
+                    .OrderByDescending(d => d.CreateTime) // 监测项通常优先看最新的数据
+                    .ToPageListAsync(pageIndex, pageSize, total);
+
+                // 计算总页数
+                total.Value = (int)Math.Ceiling((double)total.Value / pageSize);
+                return Result<List<MonitorValueEntity>>.Success(list);
+            }
+            catch (Exception ex)
+            {
+                return Result<List<MonitorValueEntity>>.Error($"根据名称 [{monitorName}] 分页查询数据失败", ex);
+            }
+        }
+    }
+}