Calling a method with an index on ArrayList in c#

Question

Ok here is my dilemma, I want to create an array of custom objects but then be able to do something like list[index].method call.

as an example:

program starts
program creates a master array which holds GenericClass< T >(param)
each generic class then creates an array of type T

I can get that part to work ok but then when I try to use my object methods such as

object[] MasterList = new object[MASTER_LIST_SIZE]; 
// add contents to MasterList

MasterList[index].setValueAt(MethodIndex, value);

I get a message that reads object has no method named setValueAt which requires one parameter(s)

I will admit that what I am trying to do is rather dumb and I could probably do it easier with reading a text file or something but if there is a way to do it like this I would like to know how or at least what I am missing.

Why do you get a "no method named setValueAt which requires one parameter" error when you are actually passing two arguments? — K-ballo
– K-ballo, Commented Sep 27, 2011 at 0:09
@Everett - I'm gonna take a wild guess and say you are using ArrayList? — ChaosPandion
– ChaosPandion, Commented Sep 27, 2011 at 0:25
@Everett - If you know the type of the contents of the array why are you not taking advantage of that fact? — ChaosPandion
– ChaosPandion, Commented Sep 27, 2011 at 0:42

ChaosPandion · Accepted Answer · 2011-09-27 00:49:47Z

3

There are a lot of unknowns about what you are doing but my best guess is that you need to cast the result to the type you need.

((GenericClass<T>)MasterList[index]).setValueAt(MethodIndex, value);

answered Sep 27, 2011 at 0:49

ChaosPandion

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1 Comment

Everett Over a year ago

that got me close enough that I think I can work with it thanks :)

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