quick question, how do I make a list with a message box?

I've been only taught this method which is: MessageBox.Show ( " Initial Message ", "Title", MessageBoxButton.() , MessageBoxIcon.() );

However for my assignment, it tells me to format it like this




MessageBox.Show(a.ToString("C"), "Compound Interest", MessageBoxButtons.OK, MessageBoxIcon.Information);
This is what I have at the moment, but it only shows one message box at a time.

Is there any way to make it so all my calculations go into one message box?

This is my coding: A person invests $1000.00 in a savings account that yields 5% interest annually

const decimal r = 0.05m;
decimal p = 1000;
decimal a;
int n = 1;

while (n <= 5)
{
p = p + (r * p);
a = p;
n++;
MessageBox.Show(a.ToString("C"), "Compound Interest", MessageBoxButtons.OK, MessageBoxIcon.Information);

}

have you tried string concatenation?

This. Inside your loop concat all your values into a single string with newlines placed after each result. Then you can further format/display it from there.

Your interest calculation is incorrect as well. To add 5% of the principal to the principal you simply do

thanks for replying! I've been trying to concatenate the strings, but I can't seem to do it. how do i store each iteration into one string? Other than that, I understand how to format the message box now

yeah, the exact formula I was given was a = p * (1 + r) ^ n ), but I didn't quite understand the 1+r part so I made my own equation, which also worked

To be precise:

a = original deposit
r = interest rate
n = # of years
p = balance

Just append the string each iteration:



This post was edited by AbDuCt on Nov 1 2014 09:18pm

I tried that, but its still giving me separate message boxes for each iteration

Then you aren't doing that. You have the MessageBox.Show inside the while loop. Move it outside of the while loop like shown above.

It gives me this : "use of unassigned local variable" when i move it outside