Problem by using an Object and a variable inside another function [modified]

[nstk]

Hello, trying to build a Windows programm, I 've declared an object in Fornm1.cs by typing

Person[] P = new Person[10];

after a class Person I 've created on another file called Person.cs Then on the function that is being activated after clicking on a button inside the Form I pass simple numerical values to a member attribute like below:

    private void btnObjectAdd\_Click(object sender, EventArgs e)
    {
        lbltest\_i.Text = i.ToString();
        P\[i\] = new Person();
        P\[i\].category = i;
        i++;
        if (i == 10)
        {
            for (i = 0; i < 10; i++)
                P\[i\] = null;
                i = 0;
        }
     }

Thus I get P[0]=0, P[1]=1, ... P[9]=9. Then I try to call a value of an object on another function like

    private void showToolStripMenuItem\_Click(object sender, EventArgs e)
{
   int value = P\[2\].category;
}

and I get value = 2. This works perfect. But if I change

int value = P[2].category;

into

int value = P[i].category;

then I get an error that I should create an object with 'new'. Variable i is declared as

int i = 0;

outside the functions but inside the public partial class Form1 : Form Is that the problem?

modified on Monday, February 7, 2011 1:14 PM

[musefan]

There seems to be something very wrong with your design. But if "i" is declared in the same class as your showToolStripMenuItem_Click code then there should be no reason why that is the problem. Perhaps you need to post more of your code - and please you the PRE tags to format is more readably.

return 5;

[nstk]

Thanks for the 'pre' tip, i was looking for s'thing like that. I got rid of the confusing 0 by changing the array into

new Person[11]

instead of a 10 dimension. After all, we 've got plenty of memory nowdays :-\ As a result everything worked fine! It must have been some other mistake, as the one I thought of.