DbContext Constructors Reference Feedback Definition Namespace: System.Data.Entity Assembly: EntityFramework.dll Overloads Expand table DbContext() Constructs a new context instance using conventions to create the name of the database to which a connection will be made. The by-convention ...
CosmosPage<T> CosmosPrimitiveCollectionBuilderExtensions CosmosPropertyBuilderExtensions CosmosPropertyExtensions CosmosQueryableExtensions DataCompressionType DbContext DbContext Constructors Properties Methods Events Explicit Interface Implementations DbContextId
在CheckContextConstructors,我们看到反射去获取DBContext的继承类,查找构造函数,并且参数如果是0就会报异常。接下来在往下走,调用了一个AddCoreServices的方法,在这个方法里,我们是将DBContextOptions的泛型和非泛型注入到容器里面去,其中有一个CreateDbContextOptions的方法,里面去new了一个DbContextOptionsBuilder类,然后调...
} 在CheckContextConstructors,我们看到反射去获取DBContext的继承类,查找构造函数,并且参数如果是0就会报异常。接下来在往下走,调用了一个AddCoreServices的方法,在这个方法里,我们是将DBContextOptions的泛型和非泛型注入到容器里面去,其中有一个CreateDbContextOptions的方法,里面去new了一个DbContextOptionsBuilder类,然...
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope")] [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")] public DbContext (string nameOrConnectionString); 參數 nameOrConnecti...
It is possible to use both the Constructor & OnConfiguring method to configure the DbContext. In such a scenario the OnConfiguring is executed last. Hence any changes applied in the constructor is overwritten. The optionsBuilder.IsConfigured returns a boolean value indicating whether any options ...
vartypeBuilder = moduleBuilder.DefineType($"{appId.ToLower()}_DbContext", TypeAttributes.Public | TypeAttributes.Class,typeof(DbContextBase));varconstructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard,newType[] { });varilGenerator = constructorBuilder.Get...
This pattern also makes it easy to pass configuration like the connection string via theDbContextconstructor. For example: C# publicclassApplicationDbContext:DbContext{privatereadonlystring_connectionString;publicApplicationDbContext(stringconnectionString){ _connectionString = connectionString; }protectedoverrid...
---> Autofac.Core.DependencyResolutionException: An exception was thrown while invoking the constructor 'Void .ctor(Microsoft.EntityFrameworkCore.DbContextOptions`1[WetaPayment.Infrastructure.Data.DataContext.AppDbContext], MediatR.IMediator)' on type 'AppDbContext'. ...
(DbContextBase));varconstructorBuilder=typeBuilder.DefineConstructor(MethodAttributes.Public,CallingConventions.Standard,newType[]{});varilGenerator=constructorBuilder.GetILGenerator();ilGenerator.Emit(OpCodes.Ldarg_0);ilGenerator.Emit(OpCodes.Call,typeof(DbContextBase).GetConstructor(Type.EmptyTypes));il...