Zack.EFCore.Batch 中文文档 Chinese version Using this library, Entity Framework Core users can delete or update multiple records from a LINQ Query in a SQL statement without loading entities. This libary supports Entity Framework Core 5.0 and Entity Framework Core 6.0. Instructions: Step 1 As for...
EF Core 6 - 根据条件添加记录Hui Liu-MSFT 48,596 信誉分 • Microsoft 供应商 2024年4月15日 16:58 朋友们, 在我的 Blazor 服务器应用程序中,我将 BulkPurchaseRequest 记录插入到 DB 中,如下所示。 c# 复制 public class BulkPurchaseRequestsRepository : IBulkPurchaseRequestsRepository { private ...
Having to delete or update multiple records in EF creates a huge performance bottleneck as essentially records are still operated on one by one. We solve this by mapping to stored procedures and first using xml type parameters and later user-defined table types. We wrote extensions that allow ...
{ "ConnectionStrings": { "DefaultConnection": "Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=EFCoreInsertRecords;Trusted_Connection=True;MultipleActiveResultSets=true" }} 3 向数据库中插入单挑数据 让我们展示一下如何在Department中创建一条记录,代码如下: var dept = new Department(){ Name = ...
Zack.EFCore.Batch_NET7.sln Zack.EFCore.Batch_NET8.sln .NET 7/8 and above users, please check this 中文文档 Chinese version Using this library, Entity Framework Core users can delete or update multiple records from a LINQ Query in a SQL statement without loading entities. This libary suppor...
vs2017 EFCore 迁移数据库命令 项目结构: 首先引用 Microsoft.EntityFrameworkCore.Tools Microsoft.EntityFrameworkCore.Design 增加类DesignTimeDbContextFactory 1 2 3 4 5 6 7 8 9 10 11 publicclassDesignTimeDbContextFactory : IDesignTimeDbContextFactory<QHContext>...
We’re using immutable records here, since these are a good match for the semantics of our complex types, but nesting of complex types can be done with any flavor of .NET type. NOTE We’re not using a primary constructor for the Contact type because EF Core does not yet support construc...
Once a new migration has been generated, it can be applied to a database in various ways. EF Core records all applied migrations in a special history table, allowing it to know which migrations have been applied and which haven’t.
This can be achieved by using the DbSet<T>.Update method (which is new in EF Core). DbSet Update The DbSet<T> class provides Update and UpdateRange methods for working with an individual or multiple entities. language-csharp Explain code | Copy code public void Save(Author author) {...
after being filled in with DateTime.Now. But this option always updates my LatestUpdate field to...