Compiler can't find method

[seanbo]

i have a method which is receiving an object of type 'object'. i want to call a method within that object, which exists because the object i'm sending it was written by me, but the compiler won't have it. it says' that 'object' doesn't contain such a method, which is true, but my extension of object does.

how can i get the code to compile and catch any exception that might be thrown should the method not be there? note - i don't want to parse my 'object' as what i'm actually sending it, i want my code to remain versatile and durable.

 

[seanbo]

update: i now have the same error again under a slightly different situation. i have used the activemdichild property so that i can call a method within one of my child forms. the method i've written is called createBarGraph, but because the compiler thinks i have a generic form it tells me that i don't have that method - but i do. this is beginning to be a real pain. i just want to call methods that exists, is that too much to ask?

help please

 

[Korach]

simple solution: conversion.
example:
if you use the queue class and the objects in your queue are some struct, and you want to pop an instance of the struct from the queue:
struct A
{
...
}
A a;
a = (A)q.pop();

If it doesn't work with you problem, try to make an instance of your class in the method and copy the object to it, and then call the class function.

 

[jmcpher]

You can also inline your casting like so:

((A) q.pop()).somethingInA();

or you can use Reflection like so:

object obj = q.pop();
obj.getType().InvokeMember("somethingInA", BindingFlags.InvokeMethod, null, obj, null);

but it is slower to use Reflection than casting.

"Programming is like sex, one mistake and you have to support it forever."

John

johnmc@mvmills.com