Randomly pick a memory location in an Array?

I know this may sound like a weird question to ask but I would like to know how to have the code randomly pick a memory loc开发者_如何学Pythonation in an Array without having it filled, perferably in VB.NET

Thinking of the logic, I was thinking

Dim random As Random
Dim tic(2, 2) As String


random.Next(tic(2,2))

Would putting the array as a parameter would randomly pick a memory location in an array? Yeah I really don't know what I'm talking about so I really need to be led on the right path if possible.

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Are you just looking for a random index for the array to fill it with data?

Dim x = random.Next(2)
Dim y = random.Next(2)

tic(x,y) = "Some value"

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Something like this:

Dim random as New Random
Dim tic(2, 2) As String

' Use UBound instead of 2, if your array may be a different size.
Dim i As Integer = random.Next (0, 2)
Dim j As Integer = random.Next (0, 2)

Console.WriteLine (tic(i,j))

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Here's how you could do it in CSharp...

    Random random = new Random();
    int len1 = 2;
    int len2 = 2;

    string[,] tic = new string[len1, len2];
    string nextString = tic[random.Next() % len1, random.Next() % len2];