Caliburn.Micro HelloScreens樣本生成錯誤

Question

得到這個錯誤，當我嘗試從http://caliburnmicro.codeplex.com

錯誤打造Caliburn.Micro樣本項目「Caliburn.Micro.HelloScreens」：類型「TDocument」必須是引用類型爲了在通用類型或方法「Caliburn.Micro.Conductor」

TDocument在類DocumentWorkspace定義爲

public abstract class DocumentWorkspace<TDocument> : Conductor<TDocument>.Collection.OneActive, IDocumentWorkspace where TDocument : INotifyPropertyChanged, IDeactivate, IHaveDisplayName 
{ 

Answer 1

的類使用它作爲參數「T」關鍵字從抽象中丟失，告訴DocumentWorkspace TDocument是派生的對象類。嘗試

public abstract class DocumentWorkspace<TDocument> : Conductor<TDocument>.Collection.OneActive, IDocumentWorkspace where TDocument : class, INotifyPropertyChanged, IDeactivate, IHaveDisplayName { }