+Add-MigrationAddingEFExtensions +~~~ +CategoryInfo:ObjectNotFound:(Add-Migration:String)[],CommandNotFoundExc eption +FullyQualifiedErrorId:CommandNotFoundException Cause: This error arises when theMicrosoft.EntityFrameworkCore.Toolspackage is not referenced in yourMigrations Project. Solution: Make ...
asp.net core 2.0 EntityFrameworkCore2,0,. 之前执行Add-Migration 命令 提示无法识别的转义序列,各种不成功, 解决办法,找到 项目里面的 project.assets.json 文件用记事本打开,另存为utf-8格式,完美解决
1、 无法将“Add-Migration”项识别为 cmdlet、函数、脚本文件或可运行程序的名称。请检查名称的拼写,如果包括路径,请确保路径正确,然后再试一次 网上解决方法为:http://www.cnblogs.com/pari-Zhong/p/5339028.html 我用的第二个方法解决的:执行如下名称(Import-Module 项目路径\packages\EntityFramework.6.1.3(EF...
project but never run it. So, it may have issue in creating DBContext and adding migration was not working. The error message was misleading and caused this trouble. I ran project (Web API project using .NETCore 2.1) and then stopped it. Then I was able to run add-migration command. ...
但是在 Entity Framework Core （以下简称 EF Core ）中这些问题全可以解决。在 EF Core 中有两种验证...
For this tutorial, Entity Framework Migrations is used. Visual Studio Visual Studio Code From the Tools menu, select NuGet Package Manager > Package Manager Console. In the Package Manager Console, enter the following command: PowerShell Copy Add-Migration Rating The Add-Migration command tells...
Error while Add-Migration "Initialize" in .NET 6 Entity Framework Rijwan Ansari746Reputation points•MVP Feb 3, 2022, 3:21 PM It was not possible to find any compatible framework version The framework 'Microsoft.NETCore.App', version '2.0.0' (x64) was not found. ...
This issue has been moved from a ticket on Developer Community. [severity:I'm unable to use this version] If I add a migration in my project I get the error add-migration : Value does not fall within the expected range. But I didnt' get ...
使用mysql执行 Add-Migration报错 System.MissingMethodException: Method not found: 'Void Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator..ctor(Microsoft.EntityFrameworkCore.Migrations.IMigrationsAssembly, Microsoft.EntityFrameworkCore.Migrations.IHistoryRepository, Microsoft.EntityFrameworkCore.Storage.IDataba...
組件: Microsoft.EntityFrameworkCore.Relational.dll 套件: Microsoft.EntityFrameworkCore.Relational v9.0.0 來源: AddForeignKeyOperation.cs 要MigrationOperation 加入新外鍵的 。 C# 複製 [System.Diagnostics.DebuggerDisplay("ALTER TABLE {Table} ADD CONSTRAINT {Name} FOREIGN KEY")] public class...