![]() ![]() Select EntityFramework (make sure that the author is Microsoft and the version is 6.x) and click on Install. It will display all the API/plug-ins starting with EntityFramework as shown below. Search for EntityFramework in the top left search box and press Enter. This will open the Manage NuGet Packages dialogue box. ![]() ![]() Right click on your project in the solution explorer and select Manage NuGet Packages. (You can install EF via NuGet the same way in any version of Visual Studio.) Here, we will install Entity Framework 6 API using NuGet Package Manager in Visual Studio. Meworks//Versions/10.4.0.114/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.You need to install EntityFramework.dll (EF API) in your project in Visual Studio in order to work with the Code-First approach. > System.NotImplementedException: Interpreter of ref typesĪt .CompileMethodCallExpression ( expr) in /Library/Frameworks//Versions/10.4.0.114/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1283Īt .CompileNoLabelPush ( expr) in /Library/Frameworks//Versions/10.4.0.114/src/mono/mcs/class/dlr/Runtime/Microsoft.Dynamic/Interpreter/LightCompiler.cs:1642Īt .Compile ( expr) in /Library/Fra > : Exception has been thrown by the target of an invocation. : Exception has been thrown by the target of an invocation. To use EF Core 2.0 you need at least Mono 5.2, hence you need to ensure you have installed Visual Studio 15.3 or higher. If you run any Mono Version lower than 5.0, you will get the following error, in iOS, if using an older version of EF Core. NET Standard 2.0 in UWP is still in the works, hence you must wait for that support, and then UWP will work with EFCore 2.0. EFCore 2.0 with Mono 5.0+ will work on all platforms except UWP. Note: EFCore 1.0 with Mono 5.0+ will work on all platforms. OptionsBuilder.UseSqlite($"Filename=) Īnd then if you run the project on Android, UWP or iOS, will you see. Protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) Public DatabaseContext(string databasePath) All you need to do, is create a class, and if you want a primary key, or other attributes, add them as appropriate. I add it just before the (), in the AppDelegate.cs SQLitePCL.Batteries_V2.Init() Database Setupįirst you want to create the Tables, for your database. IOS complains on startup, if you don’t add the following line. Var dbPath = Path.Combine(Environment.GetFolderPath(), ".", "Library", "exrin.db") Var dbPath = Path.Combine(.LocalFolder.Path, "exrin.db") Var dbPath = Path.Combine(Environment.GetFolderPath(), "exrin.db") For simplicity sake, I will just pass this through the constructor of the App.cs. You will need to pass this value into the class library, and that approach is up to your existing architecture. This is slightly different in each platform. Native Project SetupĪll you need to do in each platform, is get the path to the SQLite database. It’s easier to wipe them all out and add them again, rather than manually doing it. Now reload your project, and add back in your Nuget packages and references. $(PackageTargetFallback) portable-win+net45+wp8+win81+wpa8 Delete everything inside, and replace it with this. NET Standard Library, is to edit the csproj of this PCL. If you have a PCL, a quick way to convert it to a. Note: Do NOT add the SQLite extension in UWP, this is not needed with EF Core and will cause a conflict, if added. I have an example repo, EFXamarin on GitHub if you want to see a completed solution. It will install all other required dependencies, as appropriate. ![]() Install in every project, the traditional and the class library. NET Core SDK 2.0 installed, and your class library must be set to use. For those coming from server or desktop development, this will mean a very easy transition to mobile database development. With the release of Entity Framework Core 2.0, you can now run EF with a SQLite database on iOS, Android and UWP. ![]()
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