a basic casting question

[sam]

I'm new to C#. This piece of code works fine and needs no explicit cast in
vb.net.

itemId = arrCart(cartId, i)

When I converted it to C#, it complained that it cannot do the implicit
conversion. So I tried:

itemId = (int)arrCart[cartId, i];

But I get an exception error read: Specified cast is not valid.

Can anyone tell me how to correct this?

[Mattias Sjögren]

>Can anyone tell me how to correct this?

Not without knowing what arrCart returns.
Mattias

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Mattias Sjögren [C# MVP] mattias @ mvps.org
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[sam]

Sorry.

int itemtId;
object[,] arrCart;

and we can say cartId = 100 and i =0.

"Mattias Sjögren" wrote:

Can anyone tell me how to correct this?

Not without knowing what arrCart returns.
Mattias

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

[Mattias Sjögren]

>int itemtId;

object[,] arrCart;

and we can say cartId = 100 and i =0.

OK, then what does arrCart[100,1] contain? The cast (which would
actually be an unboxing operation) will only succeed if it contains a
boxed int.
Mattias

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

[sam]

Tried Convert.ToInt16 instead of the case and it resoved it. Thanks!

"Mattias Sjögren" wrote:

int itemtId;
object[,] arrCart;

and we can say cartId = 100 and i =0.

OK, then what does arrCart[100,1] contain? The cast (which would
actually be an unboxing operation) will only succeed if it contains a
boxed int.
Mattias

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