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後仍然返回null我正在使用Unity(Prism4自帶)的版本2。我試圖編寫一個可以返回非註冊類型枚舉的擴展。下面的代碼是我寫的,但是在解析調用後我得到了空值。爲什麼Unity自定義BuilderStrategy即使在設置Existing property
class EnumerableStrategy : BuilderStrategy
{
public override void PreBuildUp(IBuilderContext context)
{
context.Existing = new []{"Test"};
context.BuildComplete = true;
}
}
class EnumerableExtension : UnityContainerExtension
{
protected override void Initialize()
{
Context.BuildPlanStrategies.AddNew<EnumerableStrategy>(Microsoft.Practices.Unity.ObjectBuilder.UnityBuildStage.PreCreation);
}
}
static void Main(string[] args)
{
var container = new UnityContainer();
container.AddNewExtension<EnumerableExtension>();
var items = container.Resolve<IEnumerable<string>>();
foreach (var item in items)
Console.WriteLine(item.ToString());
}
項目變量結果爲null。爲什麼?
Unity有哪些版本的Prism4? – 2011-06-11 21:25:34
2.0。剛剛更新了問題 – 2011-06-11 21:39:27