Variable 'Random Number' is used before it has been assigned a value.

Variable 'RandomNumber' is used before it has been assigned a value. A new reference exception could result at runtime.

Code:

Code:

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    Sub RandomizeConLandLaunch(ByRef con As Integer)
        Dim RandomNumber(,) As Integer
        ConLandLaunch(con) = RandomNumber(1, 30000)
    End Sub

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what should i do ?

Have you run that code?... what happen when you do?

Have you run that code?... what happen when you do?

this line

Code:

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Dim RandomNumber(,) As Integer

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creates a 2 dimensional array of integers, but since you did not supply values to indicate the size of the array, the array does not exist. When you do this...

Code:

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ConLandLaunch(con) = RandomNumber(1, 30000)

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you are assigning the value that resides at the 1,30000 position of the RandomNumber array, but that value does not exist, so your code will (should) error

What are you trying to do?

> What are you trying to do?
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Fix that warning out...?

Quote:

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Originally Posted by kebo

this line

Code:

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Dim RandomNumber(,) As Integer

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creates a 2 dimensional array of integers

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Actually it doesn't, and that's the problem. Your implication is correct but your terminology is not. That code just declares a variable that CAN refer to an array but it doesn't actually create any array. As such the variable is Nothing, i.e. it doesn't refer to an object. Variables and objects are two different things. Variables are declared and objects are created.

Unless I'm mistaken, it looks like you are trying to get a random value between 1 and 30000. If that's the case, then use an instance of the Random class and call Next.

Quote:

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Originally Posted by jmcilhinney

Actually it doesn't, and that's the problem. Your implication is correct but your terminology is not. That code just declares a variable that CAN refer to an array but it doesn't actually create any array. As such the variable is Nothing, i.e. it doesn't refer to an object. Variables and objects are two different things. Variables are declared and objects are created.

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thanks for the clarification

I asking, because i got "1 WEEK OF EXPERIENCE" in VB 6.0, but i really didn't like VB 6.0, so i try to fix the code by the very useful help of "VBUC", from VB 6.0 to Microsoft Visual Studio 2008.
Now the code are "fixed", but not at 100% ..
I got this warning and just ask how to fix it..
If any1 knows, just post:
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Dude, your code:

Code:

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THE CODE

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IS WRONG ..

You have to change it like this:

Code:

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THE RIGHT CODE

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Im absolute beginner, so i need really basic explanation =))
Thanks.

The first thing you need to answer is what you are trying to do, and I don't mean 'get rid of the warning'. Are you trying to generate a random number? Do you actually want a multi-dimensional array of that length?