FreeSql.Extensions.BaseEntity v3.5.208 — nugetz
2881099/ FreeSql.Extensions.BaseEntity v3.5.208 .NET FW4.0 .NET FW4.5 .NET Std2.0
BaseEntity 是一种极简单的 CodeFirst 开发方式，特别对单表或多表CRUD，利用继承节省了每个实体类的重复属性（创建时间、ID等字段），软件删除等功能，进行 crud 操作时不必时常考虑仓储的使用.
Get Started dotnet CLI PackageReference Package Manager
$ dotnet add package FreeSql.Extensions.BaseEntityReadme <h1 align="center"> 🦄 FreeSql, The First AOT ORM!</h1><div align="center">
FreeSql is a powerful O/RM component, supports .NET Core 2.1+, .NET Framework 4.0+, Xamarin, And AOT.
<p>
<span>English</span> |
<a href="README.zh-CN.md">中文</a>
</p>
</div>
🛠 Support CodeFirst data migration.
💻 Support DbFirst import entity class from database, or use Generation Tool .
⛳ Support advanced type mapping, such as PostgreSQL array type, etc.
🌲 Support expression functions, and customizable analysis.
🏁 Support one-to-many and many-to-many navigation properties, include and lazy loading.
📃 Support Read/Write separation, Splitting Table/Database, Global filters, Optimistic and pessimistic locker.
🌳 Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite/Firebird/达梦/人大金仓/南大通用/虚谷/神舟通用/翰高/ClickHouse/DuckDB/TDengine/QuestDB/MsAccess, etc.
<p align="center">
<img src="https://github.com/dotnetcore/FreeSql/raw/master/functions13.png"/>
</p>
<a href="https://contributors-img.web.app/image?repo=dotnetcore/FreeSql">
<img src="https://contributors-img.web.app/image?repo=dotnetcore/FreeSql" />
</a>
QQ Groups：561616019(available) 、4336577(full)、8578575(full)、52508226(full)
📚 Documentation
Please select a development mode:
Some open source projects that use FreeSql:
🚀 Quick start
dotnet add package FreeSql.Provider.Sqlite
static IFreeSql fsql = new FreeSql.FreeSqlBuilder()
.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=document.db")
.UseAutoSyncStructure(true) //automatically synchronize the entity structure to the database
.Build(); //be sure to define as singleton mode
class Song {
[Column(IsIdentity = true)]
public int Id { get; set; }
public string Title { get; set; }
public string Url { get; set; }
public DateTime CreateTime { get; set; }
public ICollection<Tag> Tags { get; set; }
}
class Song_tag {
public int Song_id { get; set; }
public Song Song { get; set; }
public int Tag_id { get; set; }
public Tag Tag { get; set; }
}
class Tag {
[Column(IsIdentity = true)]
public int Id { get; set; }
public string Name { get; set; }
public int? Parent_id { get; set; }
public Tag Parent { get; set; }
public ICollection<Song> Songs { get; set; }
public ICollection<Tag> Tags { get; set; }
}
🔎 Query //OneToOne、ManyToOne
fsql.Select<Tag>().Where(a => a.Parent.Parent.Name == "English").ToList();
//OneToMany
fsql.Select<Tag>().IncludeMany(a => a.Tags, then => then.Where(sub => sub.Name == "foo")).ToList();
//ManyToMany
fsql.Select<Song>()
.IncludeMany(a => a.Tags, then => then.Where(sub => sub.Name == "foo"))
.Where(s => s.Tags.Any(t => t.Name == "Chinese"))
.ToList();
//Other
fsql.Select<YourType>()
.Where(a => a.IsDelete == 0)
.WhereIf(keyword != null, a => a.UserName.Contains(keyword))
.WhereIf(role_id > 0, a => a.RoleId == role_id)
.Where(a => a.Nodes.Any(t => t.Parent.Id == t.UserId))
.Count(out var total)
.Page(page, size)
.OrderByDescending(a => a.Id)
.ToList()
fsql.Select<Song>().Where(a => new[] { 1, 2, 3 }.Contains(a.Id)).ToList();
fsql.Select<Song>().Where(a => a.CreateTime.Date == DateTime.Today).ToList();
fsql.Select<Song>().OrderBy(a => Guid.NewGuid()).Limit(10).ToList();
fsql.Select<Song>().ToList(a => new
{
a.Id,
Tags = fsql.Select<Tag>().ToList(),
SongTags = fsql.Select<SongTag>().Where(b => b.TopicId == a.Id).ToList()
});
🚁 Repository
dotnet add package FreeSql.Repository
[Transactional]
public void Add() {
var repo = ioc.GetService<BaseRepository<Tag>>();
repo.DbContextOptions.EnableCascadeSave = true;
var item = new Tag {
Name = "testaddsublist",
Tags = new[] {
new Tag { Name = "sub1" },
new Tag { Name = "sub2" }
}
};
repo.Insert(item);
}
💪 Performance FreeSql Query & Dapper Query
Elapsed: 00:00:00.6733199; Query Entity Counts: 131072; ORM: Dapper
Elapsed: 00:00:00.4554230; Query Tuple Counts: 131072; ORM: Dapper
Elapsed: 00:00:00.6846146; Query Dynamic Counts: 131072; ORM: Dapper
Elapsed: 00:00:00.6818111; Query Entity Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:00.6060042; Query Tuple Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:00.4211323; Query ToList<Tuple> Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:01.0236285; Query Dynamic Counts: 131072; ORM: FreeSql*
FreeSql ToList & Dapper Query
Elapsed: 00:00:00.6707125; ToList Entity Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:00.6495301; Query Entity Counts: 131072; ORM: Dapper
👯 Contributors And other friends who made important suggestions for this project, they include:
systemhejiyong ,
LambertW ,
mypeng1985 ,
stulzq ,
movingsam ,
ALer-R ,
zouql ,
深圳|凉茶,
densen2014 ,
LiaoLiaoWuJu ,
hd2y ,
tky753 ,
feijie999 ,
constantine,
JohnZhou2020 ,
mafeng8 ,
VicBilibily ,
Soar ,
quzhen91 ,
homejun,
d4ilys etc.
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🗄 License Compatibility .NET FW4.0
.NET FW4.5
.NET Std2.0
Versions 3.5.306 Latest
Feb 16, 2026 Other versions (145) 
