a basic casting question

[Guest]

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

 

[Guest]

Sorry.

int itemtId;
object[,] arrCart;

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

 

[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

 

[Guest]

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

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