I'm using C# and I want to Add-Migration InitialVersion but have an problem:
Method not found: 'System.Object Microsoft.EntityFrameworkCore.Infrastructure.IAnnotatable.get_Item(System.String)'
Nuget packages which I use:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.0-preview.2.21154.2" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.0-preview.2.21154.2">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="5.0.0-alpha.2" />
</ItemGroup>
</Project>
Downgrade Microsoft.EntityFrameworkCore and Microsoft.EntityFrameworkCore.Tools to latest 5th version. You can do it via dotnet CLI using next command:
dotnet add package Microsoft.EntityFrameworkCore --version 5.0.4
dotnet add package Microsoft.EntityFrameworkCore.Tools --version 5.0.4
Indexer accepting string was removed from IAnnotatable in the 6th preview version.
Another option is to update dotnet-ef to the same version as in your project
dotnet tool update --global dotnet-ef --version 6.0.0-preview.2.21154.2