get values from object of value object[4,4]

(C# in VS2010)

I get an object from a method called multiplyMatrix(m1,m2). The signature of this method is: public object multiplyMatrix(object[,] m1, object[,] m2)

Then,

object toCheckOutput = multiplyMatrix(m1, m2);

This row works, but I have to verify the data in the "array". When I watch the variable toCheckOutput in the watch window i get as value {object[4,4]} and as type object{object[,]}.

If I try to access a value of the "array" with toCheckOutput[0,1], I get the following error from the compiler:

Cannot apply indexing with [] t开发者_开发技巧o an expression of type 'object'.

Does somebody know how to solve this? I tried it with typecasts over typecasts but this didn't work either.

It sounds like the method signature should be public object[,] multiplyMatrix(object[,] m1, object[,] m2). If you have control over this API, fix it there.

If not, just cast around the problem:

object[,] toCheckOutput = (object[,])multiplyMatrix(m1, m2);

The compiler isn't letting you index object because object has no indexer; you need to make sure the compiler knows that the object is in fact an array.