Insert Values from string[] arrays to an ArrayList of records

Question

I will add the values in the String[] in to the Arraylist. But, I want to access those string values from the ArrayList.

I tried this way.

private void Form1_Load()
{
    fr = new string[5] { "1", "2", "3", "4", "5" };
    bd = new string[5] {"a", "b","c", "d", "e"};
    m = new ArrayList();
    dosomething();
}

private void dosomething()
{
    string[] record = new string[3];
    for (int i = 0; i < 5; i++)
    {
        record[0] = "1";
        record[1] = fr[i];
        record[2] = bd[i];
        m.Add(record);
    }
}

I don't want to use the for loop is that any other way to do this???

@reporter : private void Form1_Load(object sender, EventArgs e) -> no it looks like .Net — Kooki
– Kooki, Commented May 23, 2013 at 13:20

Fares · Accepted Answer · 2013-05-23 13:37:54Z

0

I recommend you to use dictionaries. It is in my opinion the quickest way to store / access data. Also, with arraylists, at runtime, it performs a dynamic transtyping, which makes you loose so much time.

answered May 23, 2013 at 13:37

Fares

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Comments

Kooki · Accepted Answer · 2013-05-23 13:43:24Z

0

You maybe want to use :

        fr = new string[5] { "1", "2", "3", "4", "5" };
        bd = new string[5] { "a", "b", "c", "d", "e" };
        m = new ArrayList();
        fr.ToList().ForEach(_item => m.Add(new String[]{ "1", _item,bd[fr.ToList().IndexOf(_item)]}));

But I would prefere a solution like Fares already recommented...Use A Dictionary

Dictionary - MSDN

answered May 23, 2013 at 13:43

Kooki

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Comments

Eoin Campbell · Accepted Answer · 2013-05-23 13:43:56Z

0

Not sure why you need an ArrayList. A generic list might be more suitable for you.

var fr = new string[5] { "1", "2", "3", "4", "5" };
var bd = new string[5] {"a", "b","c", "d", "e"};

int i = 1;
var results = fr.Zip<string, string, string[]>(bd, (a,b) => {
    var v = new string [3] { i.ToString(), a,b }; 
    i++;
    return v;
}).ToList();

answered May 23, 2013 at 13:43

Eoin Campbell

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