DbConfiguration.SetContextFactory Method
Definition
Important
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Overloads
| SetContextFactory(Type, Func<DbContext>) |
Call this method from the constructor of a class derived from DbConfiguration to set a factory to allow DbContextInfo to create instances of a context that does not have a public, parameterless constructor. |
| SetContextFactory<TContext>(Func<TContext>) |
Call this method from the constructor of a class derived from DbConfiguration to set a factory to allow DbContextInfo to create instances of a context that does not have a public, parameterless constructor. |
SetContextFactory(Type, Func<DbContext>)
Call this method from the constructor of a class derived from DbConfiguration to set a factory to allow DbContextInfo to create instances of a context that does not have a public, parameterless constructor.
protected internal void SetContextFactory (Type contextType, Func<System.Data.Entity.DbContext> factory);member this.SetContextFactory : Type * Func<System.Data.Entity.DbContext> -> unitProtected Friend Sub SetContextFactory (contextType As Type, factory As Func(Of DbContext))Parameters
- contextType
- Type
The context type for which the factory should be used.
Remarks
This is typically needed to allow design-time tools like Migrations or scaffolding code to use contexts that do not have public, parameterless constructors. This method is provided as a convenient and discoverable way to add configuration to the Entity Framework. Internally it works in the same way as using AddDependencyResolver to add an appropriate resolver for Func<TResult> with the context Type as the key. This means that, if desired, the same functionality can be achieved using a custom resolver or a resolver backed by an Inversion-of-Control container.
Applies to
SetContextFactory<TContext>(Func<TContext>)
Call this method from the constructor of a class derived from DbConfiguration to set a factory to allow DbContextInfo to create instances of a context that does not have a public, parameterless constructor.
protected internal void SetContextFactory<TContext> (Func<TContext> factory) where TContext : System.Data.Entity.DbContext;member this.SetContextFactory : Func<'Context (requires 'Context :> System.Data.Entity.DbContext)> -> unit (requires 'Context :> System.Data.Entity.DbContext)Protected Friend Sub SetContextFactory(Of TContext As DbContext) (factory As Func(Of TContext))Type Parameters
- TContext
The context type for which the factory should be used.
Parameters
- factory
- Func<TContext>
The delegate to use to create context instances.
Remarks
This is typically needed to allow design-time tools like Migrations or scaffolding code to use contexts that do not have public, parameterless constructors. This method is provided as a convenient and discoverable way to add configuration to the Entity Framework. Internally it works in the same way as using AddDependencyResolver to add an appropriate resolver for Func<TResult> with the context Type as the key. This means that, if desired, the same functionality can be achieved using a custom resolver or a resolver backed by an Inversion-of-Control container.
Applies to
Entity Framework