how to join 2 dimensional array of string in c#?

Question

i have problem:

string[,] a = string[27,27];
a = bootsrapMinor(data);
string[,] b = string[27,27];
b = bootstrapMayor(data);

string[,] c = a + b;

the error message is "Operator '+' cannot be applied to operands of type 'string[,]' and 'string[,]' "

anyone have solutions for my problem in joining 2 dimensional array if string? thanks alot.

Give an example of the final join? Do you want to concatenate strings at the same positions in the arrays? — Jakub Konecki
– Jakub Konecki, Commented Feb 16, 2011 at 11:01
example: a = {"a","b","c","d"}, b = {"e","f","g","h"}, it should e c = {"a","b","c","d","e","f","g","h"} (but it in multidimensional array). thank you — Fransiska
– Fransiska, Commented Feb 16, 2011 at 11:51

Thomas Levesque · Accepted Answer · 2011-02-16 13:01:10Z

1

You can't just "add" two arrays, because the '+' operator is not defined for arrays; you need two nested for loops:

string[,] c = new string[27, 27];
for (int i = 0; i < 27; i++)
{
    for (int j = 0; j < 27; j++)
    {
        c[i, j] = a[i, j] + b[i, j];
    }
}

OK, I misunderstood your question...

This should work:

string[,] c = new string[54, 27];
for (int i = 0; i < 27; i++)
{
    for (int j = 0; j < 27; j++)
    {
        c[i, j] = a[i, j];
        c[27 + i, j] = b[i, j];
    }
}

edited Feb 16, 2011 at 13:01

answered Feb 16, 2011 at 11:05

Thomas Levesque

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3 Comments

Fransiska Over a year ago

hmm, i mean string c = new string [54,27] not string c = new string [27,27]. how to solve this problem? thanks for answering my question :)

Thomas Levesque Over a year ago

I updated my answer. Next time, try to ask your question more clearly ;)

Fransiska Over a year ago

okay :) thank you so much for the answer :) sorry if my question doesn't clear

Jaime Oro · Accepted Answer · 2011-02-16 11:05:17Z

0

for (int i=0;i<27;i++)
  for (int j=0;j<27;j++)
    c[i,j] = a [i,j] + b[i,j];

answered Feb 16, 2011 at 11:05

Jaime Oro

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2 Comments

Fransiska Over a year ago

hmm, i mean string c = new string [54,27] not string c = new string [27,27]. how to solve this problem? thanks for answering my question :)

Jaime Oro Over a year ago

ups, then you shuld use a.CopyTo and b.CopyTo but I've never used it. I hope someone else can help you.

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