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generic interface question

Hello,

I have a question on why I am getting an error of "Cannot implicitly
convert type 'testGenerics.t estCollection' to
'testGenerics.I MyCollection<Sy stem.IComparabl e>'. An explicit
conversion exists (are you missing a cast?)" for the following code.
Since, a Double implements IComparable, It should be implicitly
castable no?

interface IMyCollection<m yTypewhere myType : IComparable
{

}

class testCollection : IMyCollection<D ouble>
{

}

class Program
{
static void Main(string[] args)
{
IMyCollection<I Comparabletest = new testCollection( );
}
}

Thanks,
Ning

Oct 30 '06 #1
1 1242
>Since, a Double implements IComparable, It should be implicitly
castable no?
No. There's no inheritance relation between GenericType<Aan d
GenericType<Bev en if A derives from or implements B.
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.
Oct 30 '06 #2

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