與構造溫莎城堡寄存器類參數

Question

我有下面的類：

public class DatabaseFactory<C> : Disposable, IDatabaseFactory<C> where C : DbContext, BaseContext, new() 
{ 
    private C dataContext; 
    private string connectionString; 

    public DatabaseFactory(string connectionString) 
    { 
     this.connectionString = connectionString; 
    } 

    public C Get() 
    { 
     return dataContext ?? (dataContext = Activator.CreateInstance(typeof(C), new object[] {connectionString}) as C); 
    } 

    protected override void DisposeCore() 
    { 
     if (dataContext != null) 
      dataContext.Dispose(); 
    } 
} 

當我嘗試啓動Web API，我得到以下錯誤：

Can't create component 'MyApp.DAL.Implementations.DatabaseFactory'1' as it has dependencies to be satisfied. 'MyApp.DAL.Implementations.DatabaseFactory'1' is waiting for the following dependencies: - Parameter 'connectionString' which was not provided. Did you forget to set the dependency?

我如何註冊正確，我如何在運行時傳遞參數？

Answer 1

您需要註冊的構造函數的參數：

container.Register(
    Component.For<IDatabaseFactory>().ImplementedBy<DatabaseFactory>() 
      .DependsOn(Dependency.OnValue("connectionString", connectionString)) 
    ); 

Answer 2

您可以通過添加一個匿名類型與構造函數參數的名稱設置Resolve()方法依賴

例子：

IDatabaseFactory factory = container.Resolve<IDatabaseFactory>(new { connectionString = connectionString });