C# Multidimenional Array parsing

Question

I have a multidimensional array.

The contents look like this in the debugger.

The array is setup as

String[,] s = new String[6,4]

.

A B Yes C
A B Yes C
A B No  C
A B Yes C
A B Yes C
A B Yes C
A B No  C
A B Yes C

I basically need to know which row's say No but I am having a tough time parsing the array. Any help would be appreciated.

If you need 'parsing' then a multidom array is not the best datastructure. Why is it not a List<MyData> ? — Henk Holterman
– Henk Holterman, Commented Feb 16, 2012 at 14:05
possible duplicate of how do you loop through a multidimensional array? — Henk Holterman
– Henk Holterman, Commented Feb 16, 2012 at 14:07
This really is already covered by the answers you got yesterday. — Henk Holterman
– Henk Holterman, Commented Feb 16, 2012 at 14:08
Your sample data shows 4 rows and 4 columns, so it's impossible to tell which array dimension represents the rows and which represents the columns. — phoog
– phoog, Commented Feb 16, 2012 at 14:13

Fernando Mondo · Accepted Answer · 2012-02-16 14:29:16Z

so?

        [TestMethod]
        public void test()
        {
            var text = new String[6, 4]
                               {
                                   {"A", "B", "C", "Yes"},
                                   {"A", "B", "C", "Yes"},
                                   {"A", "B", "C", "Yes"},
                                   {"A", "B", "C", "Yes"},
                                   {"A", "B", "Not", "C"},
                                   {"A", "B", "C", "Yes"}
                               };
            var rowWithNot = new List<int>();

            for (int row = 0; row < 6; row++)
                for (int col = 0; col < 4; col++)
                    if (text[row, col].Contains("Not"))
                    {
                        rowWithNot.Add(row);
                        break;
                    }

            foreach (var row in rowWithNot)
            {
                for (int col = 0; col < 4; col++)
                {
                    Console.WriteLine(text[row, col]);
                }

            }
         }

usr · Accepted Answer · 2012-02-16 14:05:24Z

1

var rowIndices = Enumerable.Range(0, s.GetLength(0)).Where(i => s[i, 2] == "No");

answered Feb 16, 2012 at 14:05

usr

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2 Comments

orange Over a year ago

This looks really elegant but is rowIndicies an array of Indexs?

usr Over a year ago

It is an enumerable sequence. Add a ".ToList()" at the end to get a list.

Beatles1692 · Accepted Answer · 2012-02-16 14:05:32Z

0

you can do it using something like this :

IEnumurable<int> GetRowNumbersThatSayNo(string[,] values)
{
for(int i=0;i<values.Length;i++)
if(values[i,2]=="No") yield return i;
}

answered Feb 16, 2012 at 14:05

Beatles1692

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