lazily-initialized类型没有公共的无参数构造函数。 [英] The lazily-initialized type does not have a public, parameterless constructor.

问题描述

大家好，



i有一个界面说如

hi all,

i have an interface say as

IInconsistencyReportSupport

。

class InconsistencyReportSupport实现接口IInconsistencyReportSupport。



接口具有方法ProcessInconsObjects和字典属性DictObjectAndDomains



我编写了单元测试来测试

.
class InconsistencyReportSupport implements interface IInconsistencyReportSupport.

the interface has the method ProcessInconsObjects and a dictionary property "DictObjectAndDomains"

I have written unittests to test the "

DictObjectAndDomains

。在单元测试中内部

".Inside the unittests

Public ReadOnly Property IRServiceSupport() As IInconsistencyReportSupport
         Get
             If mobjIRServiceSupport Is Nothing OrElse mobjIRServiceSupport.Value Is Nothing Then
                 mobjIRServiceSupport = New Lazy(Of IInconsistencyReportSupport)
             End If
             Return mobjIRServiceSupport.Value
         End Get
     End Property

在我的unittest中

In my unittest

Public Sub ExcludeSpecifiedCDWPropertiesCrossConfigTest()

IRServiceSupport.DictObjectAndDomains= pdictobjects
end sub

但是错误的是错误：

but is failing with erro:

Assert.Fail failed. System.MissingMemberException: The lazily-initialized type does not have a public, parameterless constructor.
   at System.Lazy`1.CreateValue()
   at System.Lazy`1.LazyInitValue()
   at System.Lazy`1.get_Value()

请建议我如何验证字典



我尝试过：



i已尝试为该类添加默认构造函数，即使有相同的问题。建议如何继续进行

please suggest how can i validate the dictionary

What I have tried:

i have tried adding a default constructor for the class even have the same issue.pls suggest how to proceed further

推荐答案

Get
               If mobjIRServiceSupport Is Nothing Then
                   mobjIRServiceSupport = New Lazy(Of IInconsistencyReportSupport)(Function() New InconsistencyReportSupport)
               End If
               Return mobjIRServiceSupport.Value
           End Get

通过在属性中添加类类型来解决问题

fixed the issue by adding class type in the property

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