.net - Mixture of types in generic list -

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I am trying to do the following: 

  list & lt; IRepository & lt; IBusinessObject, ICriteria & gt; & Gt; Repositories {receive; }

and call it 

  IRAPSorporation & lt; ICustomer, ICustomerCriteria & gt; CR = new customer repository (); List.Add (CustomerRepository);

Where ICustomer and ICustomerCriteria descend from IBusinessObject and ICriteria, respectively.

However, the compiler does not like it.

Hmmm, I know I'm pushing it a bit, but I thought it would work? Anyone know why?

Thanks Duncan

This is a problem:

This will clarify the problem: 

  list & lt; String & gt; Wire = ...; & Lt; Object & gt; Object = strings; // Objects.Add (42); // 42 is an object - should work // But we will add an integer to the list of strings !!

In .NET FX 4, C # to allow a specific type of these and outside normal behavior to correct behavior Will support.


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