类中的泛型继承 [英] Generic inheritance in a class

问题描述

我正在尝试创建一个使用两个继承级别的类，例如:

I am trying to create a class that uses two levels of inheritance as such:

public class QuickDateTokenParcer<TQuickDateRelative, TUserInputOrderAdjustment>
where TQuickDateRelative : AbstractQuickDateRelative<TUserInputOrderAdjustment>, new() 
where TUserInputOrderAdjustment : AbstractUserInputOrderAdjustment, new()

可以，除非我真的不喜欢这样指定它:

This would be OK except I really do not like specifying it like:

var dic = new QuickDateTokenParcer<QuickDateRelativePast
      <UserInputOrderAdjustmentMdy>, UserInputOrderAdjustmentMdy>(
	"QuickDateStrings.xml", DateTime.Now);

我显然可以解决这个问题，但希望能够执行以下操作:

I can obviously get around this, but would like be able to do the following:

var dic = new QuickDateTokenParcer<QuickDateRelativePast
      <UserInputOrderAdjustmentMdy>>(
	"QuickDateStrings.xml", DateTime.Now);

或以下

or the following

var dic = new QuickDateTokenParcer<QuickDateRelativePast,
      UserInputOrderAdjustmentMdy>(
	"QuickDateStrings.xml", DateTime.Now);

推荐答案

总有:

using QuickDateRelativePastMdy = QuickDateRelativePast<UserInputOrderAdjustmentMdy>;
//...
var dic = new QuickDateTokenParcer<QuickDateRelativePastMdy,
                                   UserInputOrderAdjustmentMdy>
                   ("QuickDateStrings.xml", DateTime.Now);

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