添加项目文件。

Service/Implement/BaseService.cs

@@ -0,0 +1,132 @@
+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
+{
+    public class BaseService<TEntity> : IBaseService<TEntity> where TEntity : BaseEntity, new()
+    {
+        protected readonly SqlSugarRepository<TEntity> _repository;
+
+        public BaseService(SqlSugarRepository<TEntity> repository)
+        {
+            _repository = repository;
+        }
+
+        /// <summary>
+        /// 查询全部
+        /// </summary>
+        public virtual async Task<Result<List<TEntity>>> GetAllAsync()
+        {
+            try
+            {
+                var list = await _repository.Entities.ToListAsync();
+                return Result<List<TEntity>>.Success(list);
+            }
+            catch (Exception ex)
+            {
+                return Result<List<TEntity>>.Error("查询所有数据失败", ex);
+            }
+        }
+        /// <summary>
+        /// 根据日期查询全部
+        /// </summary>
+        public virtual async Task<Result<List<TEntity>>> GetAllAsyncByDate(DateTime? startDate, DateTime? endDate)
+        {
+            try
+            {
+                var list = await _repository.Entities.Where(x => x.CreateTime >= startDate && x.CreateTime <= endDate).ToListAsync();
+                return Result<List<TEntity>>.Success(list);
+            }
+            catch (Exception ex)
+            {
+                return Result<List<TEntity>>.Error("查询所有数据失败", ex);
+            }
+        }
+
+        /// <summary>
+        /// 分页查询
+        /// </summary>
+        public virtual async Task<Result<List<TEntity>>> GetPagedAsync(int pageIndex, int pageSize, RefAsync<int> total)
+        {
+            try
+            {
+                var list = await _repository.Entities
+                                            .OrderBy(d => d.Id)
+                                            .ToPageListAsync(pageIndex, pageSize, total);
+                total.Value = (int)Math.Ceiling((double)total.Value / pageSize);
+                return Result<List<TEntity>>.Success(list);
+            }
+            catch (Exception ex)
+            {
+                return Result<List<TEntity>>.Error("分页查询数据失败", ex);
+            }
+        }
+
+        /// <summary>
+        /// 分页查询，并可以根据日期范围进行过滤
+        /// </summary>
+        public virtual async Task<Result<List<TEntity>>> GetPagedAsync(int pageIndex, int pageSize, RefAsync<int> total, DateTime? startDate, DateTime? endDate)
+        {
+            try
+            {
+                var list = await _repository.Entities
+                                            .Where(x=>x.CreateTime>=startDate&&x.CreateTime <= endDate)
+                                            .OrderBy(d => d.Id)
+                                            .ToPageListAsync(pageIndex, pageSize, total);
+                total.Value = (int)Math.Ceiling((double)total.Value / pageSize);
+                return Result<List<TEntity>>.Success(list);
+            }
+            catch (Exception ex)
+            {
+                return Result<List<TEntity>>.Error("分页查询数据失败", ex);
+            }
+        }
+
+        /// <summary>
+        /// 插入单条数据
+        /// </summary>
+        public virtual async Task<Result<bool>> InsertAsync(TEntity entity)
+        {
+            try
+            {
+                var result = await _repository.Context.Insertable(entity).ExecuteCommandAsync();
+                return Result<bool>.Success(result > 0);
+            }
+            catch (Exception ex)
+            {
+                return Result<bool>.Error("插入数据失败", ex);
+            }
+        }
+        /// <summary>
+        /// 删除单条数据（根据 Id）
+        /// </summary>
+        /// <param name="id">主键 Id</param>
+        public virtual async Task<Result<bool>> DeleteAsync(long id)
+        {
+            if (id <= 0)
+                return Result<bool>.Error("主键 Id 无效，无法删除");
+
+            try
+            {
+                // 删除实体
+                var result = await _repository.Context
+                                                .Deleteable<TEntity>()
+                                                .Where(x => x.Id == id)
+                                                .ExecuteCommandAsync();
+
+                return Result<bool>.Success(result > 0);
+            }
+            catch (Exception ex)
+            {
+                return Result<bool>.Error("删除数据失败", ex);
+            }
+        }
+
+    }
+}

Service/Interface/IBaseService.cs

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+using Model;
+using SqlSugar;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Service.Interface
+{
+    /// <summary>
+    /// 泛型基础服务接口（返回 Result 封装）
+    /// </summary>
+    /// <typeparam name="TEntity">实体类型</typeparam>
+    public interface IBaseService<TEntity> where TEntity : class, new()
+    {
+        /// <summary>
+        /// 查询全部
+        /// </summary>
+        /// <returns>返回包含数据的 Result</returns>
+        Task<Result<List<TEntity>>> GetAllAsync();
+
+        /// <summary>
+        /// 根据日期查询全部
+        /// </summary>
+        /// <param name="startDate">开始日期</param>
+        /// <param name="endDate">结束日期</param>
+        /// <returns>返回包含日期范内的数据的 Result</returns>
+        Task<Result<List<TEntity>>> GetAllAsyncByDate(DateTime? startDate, DateTime? endDate);
+
+        /// <summary>
+        /// 插入单条数据
+        /// </summary>
+        /// <param name="entity"></param>
+        /// <returns>返回操作是否成功的 Result</returns>
+        Task<Result<bool>> InsertAsync(TEntity entity);
+
+        /// <summary>
+        /// 分页查询
+        /// </summary>
+        /// <param name="pageIndex">页码（从1开始）</param>
+        /// <param name="pageSize">每页数量</param>
+        /// <param name="total">总条数（输出参数）</param>
+        /// <returns>返回包含分页数据的 Result</returns>
+        Task<Result<List<TEntity>>> GetPagedAsync(int pageIndex, int pageSize, RefAsync<int> total);
+
+        /// <summary>
+        /// 分页查询，并根据日期范围进行过滤
+        /// </summary>
+        /// <param name="pageIndex">页码（从1开始）</param>
+        /// <param name="pageSize">每页数量</param>
+        /// <param name="total">总条数（输出参数）</param>
+        /// <param name="startDate">开始日期</param>
+        /// <param name="endDate">结束日期</param>
+        /// <returns>返回包含分页数据的 Result</returns>
+        Task<Result<List<TEntity>>> GetPagedAsync(int pageIndex, int pageSize, RefAsync<int> total, DateTime? startDate, DateTime? endDate);
+    }
+}

Service/Service.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ORM\ORM.csproj" />
+  </ItemGroup>
+
+</Project>