I'm getting a "Type argument 'T' does not inherent from or implement the constraint type" error on my IAccessType interface but I don't understand why. How would one create a generic parameterized interface to handle other generic parameterized interface? I want to make Access interfaces that contain a factory method for creating Dtos which in turn contains a factory method for creating Entities when saving them to a data base by repertoires some of which are specific to Entity types.
Easy enough to do this without having generic types for everything but I wanted to experiment with coupling everything together like this, but I'm more interested in why this is not valid then anything. Also, I think I am also not 100% clear on how and where to use generic type interfaces and what the syntax actually means.Code:Namespace Entites Public Interface IGenericEnt End Interface Public Interface IEntityType : Inherits IGenericEnt End Interface End Namespace Namespace Dto Public Interface IGenericDto(Of T As Entites.IGenericEnt) End Interface Public Interface IDtoType(Of T As Entites.IEntityType) : Inherits IGenericDto(Of T) End Interface End Namespace Namespace DbAccess Public Interface IGenericAccess(Of T As Dto.IGenericDto(Of Entites.IGenericEnt)) End Interface Public Interface IAccessType(Of T As Dto.IDtoType(Of Entites.IEntityType)) : Inherits IGenericAccess(Of T) End Interface End Namespace
Like is there a difference between
AndCode:Public Interface IDtoType(Of T As Entites.IEntityType) : Inherits IGenericDto(Of T)
Code:Public Interface IDtoType : Inherits IGenericDto(Of Entites.IEntityType)


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