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# Search Multidimensional Array for Specific Column Value

Posted on 2014-01-23
Medium Priority
403 Views
I have the following array:

// Declare array
public string[,] arrDeck = new string[3, 4];

// Constructor
public MainPage()
{
InitializeComponent();

// populate multidimension array (two dimensions)
arrDeck[0, 0] = "a2";
arrDeck[0, 1] = "This is not a recommended starting hand";
arrDeck[0, 2] = "5.4 Pct";
arrDeck[0, 3] = "153";

arrDeck[1, 0] = "a2s";
arrDeck[1, 1] = "You need 3 callers in an unraised pot. You need 4 callers in a raised pot.";
arrDeck[1, 2] = "12.7 Pct";
arrDeck[1, 3] = "39";
}

How do I search to find "a2s" ?

Thanks,
0
Question by:Dovberman
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Accepted Solution

Robert Schutt earned 1200 total points
ID: 39803275
Maybe something like this:
``````        /// <summary>
/// Search 2 dimensional array for a specific string in a specific position
/// </summary>
/// <param name="arr">the array to search through</param>
/// <param name="fnd">the string to find</param>
/// <param name="ps">the position (2nd array dimension) where the string must be located</param>
/// <returns>the index (1st dimension) where it was found, or -1 if not found</returns>
protected int getIndex(string[,] arr, string fnd, int ps) {
if (ps >= 0 && ps <= arr.GetUpperBound(1)) {
int p = -1;
while (++p <= arr.GetUpperBound(0)) {
if (arr[p, ps] != null && arr[p, ps].Equals(fnd))
return p;
}
}
return -1;
}
``````
Example for calling code:
``````            int i = getIndex(arrDeck, "a2s", 0);
string message;
if (i >= 0) {
message = arrDeck[i, 1];
} else {
}
``````
I chose to return index only because you may want to reference the other items from the same calling code as well.
0

Author Comment

ID: 39803637
I have never used this technique before.  It seems more efficient than a For each or Do Until loop.  I will step through it to get a better understanding.

Thanks,
0

Author Comment

ID: 39803677
Yes, the row index is what I needed.  Then I can get other columns from the found row.
Thank  you,
0

Author Closing Comment

ID: 39803683
Yes, the row index is what I needed.  Then I can get other columns from the found row.
Thank  you,
0

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