53 lines
1.7 KiB
Plaintext
53 lines
1.7 KiB
Plaintext
HOW TO CREATE: EF CORE PROJECT
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==============================
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example is for sqlite but the same works with MsSql
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nuget
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Microsoft.EntityFrameworkCore.Tools (needed for using Package Manager Console)
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Microsoft.EntityFrameworkCore.Sqlite
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MIGRATIONS
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require core, not standard
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this can be a problem b/c standard and framework can only reference standard, not core
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TO USE MIGRATIONS (core and/or standard)
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add to csproj
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<PropertyGroup>
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<GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
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</PropertyGroup>
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TO USE MIGRATIONS AS *BOTH* CORE AND STANDARD
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edit csproj
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pluralize this xml tag
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from: TargetFramework
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to: TargetFrameworks
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inside of TargetFrameworks
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from: netstandard2.1
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to: netcoreapp3.1;netstandard2.1
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run. error
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SQLite Error 1: 'no such table: Blogs'.
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set project "Set as StartUp Project"
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Tools >> Nuget Package Manager >> Package Manager Console
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default project: Examples\SQLite_NETCore2_0
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PM> add-migration InitialCreate
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PM> Update-Database
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if add-migration xyz throws and error, don't take the error msg at face value. try again with add-migration xyz -verbose
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new sqlite .db file created: Copy always/Copy if newer
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or copy .db file to destination
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relative:
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optionsBuilder.UseSqlite("Data Source=blogging.db");
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absolute (use fwd slashes):
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optionsBuilder.UseSqlite("Data Source=C:/foo/bar/blogging.db");
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REFERENCE ARTICLES
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------------------
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https://docs.microsoft.com/en-us/ef/core/get-started/netcore/new-db-sqlite
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https://carlos.mendible.com/2016/07/11/step-by-step-dotnet-core-and-entity-framework-core/
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https://www.benday.com/2017/12/19/ef-core-2-0-migrations-without-hard-coded-connection-strings/ |