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Join Date: Feb 2009

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tintincute tintincute is offline

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arrays

Apr 7th, 2009

Hi
I have a code here composed of Array. I would like to know what does this mean here: (please see the red text)
What does it mean?

Thanks & regards

ArrayList numbers = new ArrayList();
string yourValue;

Console.WriteLine("Give the value (b to end)");
Console.WriteLine();

do
{
Console.WriteLine("Give the value:");
yourValue = Console.ReadLine();

if (yourValue == "b")
break;
numbers.Add(Convert.ToInt32(yourValue));
}
while (true);
System.Collections.IEnumerator Enumerator = numbers.GetEnumerator();
while (Enumerator.MoveNext())
Console.WriteLine(" " + Enumerator.Current);

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Join Date: Aug 2008

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dickersonka dickersonka is offline

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Re: arrays

Apr 7th, 2009

this will loop through all the values in your array
IEnumerator basically means you can use it to iterate your data

lets say you have 1, 5, 3, 8 in your array

this will print out

1 5 3 8

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Join Date: Feb 2009

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tintincute tintincute is offline

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Re: arrays

Apr 7th, 2009

so in looping all the valus I always need this one:
System.Collections.IEnumerator Enumerator = numbers.GetEnumerator();
while (Enumerator.MoveNext())
Console.WriteLine(" " + Enumerator.Current);

is that right?

thanks

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Join Date: Aug 2008

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dickersonka dickersonka is offline

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Re: arrays

Apr 7th, 2009

you don't always have to use that way, but you can

you could also do something like this

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
foreach(int num in numbers)
{
  Console.WriteLine(" " + num);
}
foreach(int num in numbers)
{
  Console.WriteLine(" " + num);
}

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Join Date: Feb 2009

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tintincute tintincute is offline

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Re: arrays

Apr 7th, 2009

i tried this but when I write the "b" to end, I got an error. this is what I've done.

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
 while (true);
            //this will loop through all the values in your array IEnumerator basically means you can use it to 
            //iterate your data
            foreach (int num in numbers)
            {
                Console.WriteLine(" " + num);
            }
 
 
 
            //System.Collections.IEnumerator Enumerator = numbers.GetEnumerator();
            //while (Enumerator.MoveNext())
            //    Console.WriteLine(" " + Enumerator.Current);
        }
 while (true);
            //this will loop through all the values in your array IEnumerator basically means you can use it to 
            //iterate your data
            foreach (int num in numbers)
            {
                Console.WriteLine(" " + num);
            }


            
            //System.Collections.IEnumerator Enumerator = numbers.GetEnumerator();
            //while (Enumerator.MoveNext())
            //    Console.WriteLine(" " + Enumerator.Current);
        }

Last edited by tintincute; Apr 7th, 2009 at 5:11 pm.

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Join Date: Aug 2008

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dickersonka dickersonka is offline

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Re: arrays

Apr 7th, 2009

its because you are using an untyped list for one, but you didn't have an else statement

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
if (yourValue == "b")
{
break;
}
else
{
numbers.Add(Convert.ToInt32(yourValue));
}
if (yourValue == "b")
{
break;
}
else
{
numbers.Add(Convert.ToInt32(yourValue));
}

also you could use List instead of ArrayList

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
List<int> numbers = new List<int>();
List<int> numbers = new List<int>();

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alc6379

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Re: arrays

Apr 9th, 2009

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Originally Posted by dickersonka

also you could use List instead of ArrayList
Help with Code Tags

C# Syntax (Toggle Plain Text)
List<int> numbers = new List<int>();
List<int> numbers = new List<int>();