C# 如何使用实体框架将数据多对多插入到表中?
我正在尝试将多对多关系的记录插入到ASP.NET Core 2.1 API,我正在使用postman执行此操作,但出现以下错误: Microsoft.EntityFrameworkCore.DbUpdateException:更新条目时出错。有关详细信息,请参见内部异常 System.Data.SqlClient.SqlException:列名“AfiliadosId”无效 在System.Data.SqlClient.SqlCommand.c.b_u122_u0(任务C# 如何使用实体框架将数据多对多插入到表中?,c#,asp.net-core,entity-framework-core,C#,Asp.net Core,Entity Framework Core,我正在尝试将多对多关系的记录插入到ASP.NET Core 2.1 API,我正在使用postman执行此操作,但出现以下错误: Microsoft.EntityFrameworkCore.DbUpdateException:更新条目时出错。有关详细信息,请参见内部异常 System.Data.SqlClient.SqlException:列名“AfiliadosId”无效 在System.Data.SqlClient.SqlCommand.c.b_u122_u0(任务1结果) 在System.
1结果)
在System.Threading.Tasks.ContinuationResultTaskFromResultTask
2.InnerInvoke()在System.Threading.ExecutionContext.RunInternal(ExecutionContext ExecutionContext,ContextCallback回调,对象状态)
---来自引发异常的上一个位置的堆栈结束跟踪-- 在System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task¤tTaskSlot)
---来自引发异常的上一个位置的堆栈结束跟踪-- 在Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteAsync(IRelationalConnection连接,DbCommandMethod executeMethod,iRelationalDYDictionary
2参数值,CancellationToken CancellationToken)
在Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.ExecuteAsync(IRelationalConnection连接,CancellationToken CancellationToken)
---内部异常堆栈跟踪结束---
位于Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.ExecuteAsync(IRelationalConnection连接,CancellationToken CancellationToken)
在Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.ExecuteAsync(DbContext,ValueTuple
2参数,CancellationToken CancellationToken)
在Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.ExecuteAsync[TState,TResult](TState,Func4操作,Func
4验证成功,CancellationToken CancellationToken)
在Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChangesSync(IReadOnlyList1 EntriesToken保存,取消令牌取消令牌)
位于Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChangesSync(布尔接受ChangesOnSuccess,CancellationToken CancellationToken)
在Microsoft.EntityFrameworkCore.DbContext.SaveChangesSync(布尔值AcceptillChangesOnSuccess,CancellationToken CancellationToken)
位于D:\pruebaEmergia\WebAPI\WebAPI\Controllers\AfiliadoCreditosController.PostAfiliadosCreditos(AfiliadoCreditos-AfiliadoCreditos)中的WebAPI.Controllers.AfiliadoCreditosController.PostAfiliadosCreditos(AfiliadoCreditos-AfiliadoCreditos),第99行
位于Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.TaskOfActionResultExecutor.Execute(IActionResultTypeMapper映射器、ObjectMethodExecutor执行器、对象控制器、对象[]参数)
在System.Threading.Tasks.ValueTask中
1.get_Result()
在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync()中
在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync()上
位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext上下文)
位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(状态和下一步、范围和范围、对象和状态、布尔值和isCompleted)
在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()中
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()上
位于Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext)
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State&Next、Scope&Scope、Object&State、Boolean&isCompleted)
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()中
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()上
在Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext HttpContext)中
在Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext上下文)中
位于Microsoft.AspNetCore.Cors.Infrastructure.CorsMiddleware.Invoke(HttpContext上下文)
位于Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext上下文)
Microsoft.AspNetCore.Hosting.Internal.WebHost:信息:请求以9999.2762ms 500 text/html完成;字符集=utf-8
我的代码:
阿菲利亚多斯实体
//------------------------------------------------------------
using System;
using System.Collections.Generic;
namespace WebAPI.Models.data
{
public partial class Afiliados
{
public byte Id { get; set; }
public string Nombre { get; set; }
public string Apellido { get; set; }
public byte Cedula { get; set; }
public string Estado { get; set; }
public string AdminId { get; set; }
public ApplicationUser Admin { get; set; }
public List<AfiliadosCreditos> AfiliadosCreditos { get; set; }
}
}
DbContext:
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using WebAPI.Models.data;
namespace WebAPI.Models
{
public class ApplicationDbContext : IdentityDbContext
{
public ApplicationDbContext(DbContextOptions options) : base(options)
{
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<AfiliadosCreditos>().HasKey(x
=> new { x.CreditoId, x.AfiliadosId });
modelBuilder.Entity<AfiliadosCreditos>()
.HasOne(x => x.Afiliados)
.WithMany(x => x.AfiliadosCreditos)
.HasForeignKey(x => x.AfiliadosId);
modelBuilder.Entity<AfiliadosCreditos>()
.HasOne(x => x.Credito)
.WithMany(x => x.AfiliadosCreditos)
.HasForeignKey(x => x.CreditoId);
base.OnModelCreating(modelBuilder);
}
public DbSet<ApplicationUser> ApplicationUsers { get; set; }
public DbSet<Afiliados> Afiliados { get; set; }
public DbSet<Creditos> Creditos { get; set; }
public DbSet<AfiliadosCreditos> AfiliadosCreditos { get; set; }
}
}
使用Microsoft.AspNetCore.Identity.EntityFrameworkCore;
使用Microsoft.EntityFrameworkCore;
使用制度;
使用System.Collections.Generic;
使用System.Linq;
使用System.Threading.Tasks;
使用WebAPI.Models.data;
名称空间WebAPI.Models
{
公共类ApplicationDbContext:IdentityDbContext
{
公共应用程序DBContext(DbContextOptions选项):基本(选项)
{
}
模型创建时受保护的覆盖无效(ModelBuilder ModelBuilder)
{
modelBuilder.Entity().HasKey(x
=>新的{x.CreditoId,x.AfiliadosId});
modelBuilder.Entity()
.HasOne(x=>x.Afiliados)
.WithMany(x=>x.AfiliadosCreditos)
.HasForeignKey(x=>x.AfiliadosId);
modelBuilder.Entity()
.HasOne(x=>x.Credito)
.WithMany(x=>x.AfiliadosCreditos)
.HasForeignKey(x=>x.CreditoId);
基于模型创建(modelBuilder);
}
公共数据库集应用程序用户{get;set;}
公共DbSet Afiliados{get;set;}
公共DbSet Creditos{get;set;}
公共DbSet AfiliadosCreditos{get;set;}
}
}
控制器
public async Task<IActionResult> PostAfiliadosCreditos([FromBody] AfiliadosCreditos afiliadosCreditos)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
_context.AfiliadosCreditos.Add(afiliadosCreditos);
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateException)
{
if (AfiliadosCreditosExists(afiliadosCreditos.CreditoId))
{
return new StatusCodeResult(StatusCodes.Status409Conflict);
}
else
{
throw;
}
}
return CreatedAtAction("GetAfiliadosCreditos", new { id = afiliadosCreditos.CreditoId }, afiliadosCreditos);
}
public异步任务PostAfiliadosCreditos([FromBody]AfiliadosCreditos AfiliadosCreditos)
{
如果(!ModelState.IsValid)
{
返回请求(ModelState);
}
_context.AfiliadosCreditos.Add(afiliadosCredit
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using WebAPI.Models.data;
namespace WebAPI.Models
{
public class ApplicationDbContext : IdentityDbContext
{
public ApplicationDbContext(DbContextOptions options) : base(options)
{
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<AfiliadosCreditos>().HasKey(x
=> new { x.CreditoId, x.AfiliadosId });
modelBuilder.Entity<AfiliadosCreditos>()
.HasOne(x => x.Afiliados)
.WithMany(x => x.AfiliadosCreditos)
.HasForeignKey(x => x.AfiliadosId);
modelBuilder.Entity<AfiliadosCreditos>()
.HasOne(x => x.Credito)
.WithMany(x => x.AfiliadosCreditos)
.HasForeignKey(x => x.CreditoId);
base.OnModelCreating(modelBuilder);
}
public DbSet<ApplicationUser> ApplicationUsers { get; set; }
public DbSet<Afiliados> Afiliados { get; set; }
public DbSet<Creditos> Creditos { get; set; }
public DbSet<AfiliadosCreditos> AfiliadosCreditos { get; set; }
}
}
public async Task<IActionResult> PostAfiliadosCreditos([FromBody] AfiliadosCreditos afiliadosCreditos)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
_context.AfiliadosCreditos.Add(afiliadosCreditos);
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateException)
{
if (AfiliadosCreditosExists(afiliadosCreditos.CreditoId))
{
return new StatusCodeResult(StatusCodes.Status409Conflict);
}
else
{
throw;
}
}
return CreatedAtAction("GetAfiliadosCreditos", new { id = afiliadosCreditos.CreditoId }, afiliadosCreditos);
}