Overriding an indexer

[Esmo2000]

I'm trying to override an indexer in a Dictionary but I can't figure out what the syntax is (or even if this is possible). I tried overloading the operator but it simply complains that you cannot have both a default property indexer and an operator. There seems to be a lot of examples for C#, can anyone help me out? Regards, JP

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[N a v a n e e t h]

Esmo2000 wrote:

I'm trying to override an indexer in a Dictionary

Dictionary classes indexer is not virtual. So you can't override it. If you are looking for writing virtual indexer and overriding in a derived class, here you go.

ref class BaseClass
{
public:
property int Index[int]
{
virtual int get(int index)
{
Console::WriteLine("Base class get()");
return 0;
}
}
};

ref class DerivedClass : public BaseClass
{
public:
property int Index[int]
{
virtual int get(int index) override
{
Console::WriteLine("Derived class get()");
return 0;
}
}
};

int main()
{
BaseClass^ b = gcnew DerivedClass();
int a = b->Index[10];
return 0;
}

Like in standard C++, implicit overriding is not supported in C++/CLI. You have to explicitly specify it with override keyword. :)

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