VB.NET: How to overload Dictionary.Item(TKey) -

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i created own dictionary class, based on .net dictionary.

now want overload item() method. works fine following code: 

public overloads property item(byval key tkey) tvalue           return nothing     end    set(byval value tvalue)       mybase.item(key) = value    end set end property

when use dictionary.item(key) access value nothing. when use dictionary(key) syntax value , not nothing.

how can correctly overload dictionary.item(key) , dictionary(key)?

thank torben

the property must marked default enable indexer syntax.

public overloads default property item(byval key tkey) tvalue           return nothing     end    set(byval value tvalue)       mybase.item(key) = value    end set end property

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