Question

How to find the length (rows, cols) of 2D array in C#

Answer 1

using System;

class Program
{
    static void Main() {
        int[,] array2d = new int[2, 3] { { 1, 8, 5 }, 
                                         { 6, 7, 1 } };
                                           
        int rows = array2d.GetUpperBound(0) + 1;
        int cols = array2d.GetUpperBound(1) + 1;

        Console.WriteLine(rows);
        Console.WriteLine(cols);
    }
}




 
/*
run:
 
2
3
 
*/

 

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Answer 2

using System;

class Program
{
    static void Main() {
        int[,] array2d = { { 1,   2,   3,   6,  0},
                           {-5,  -4,   0,   7,  9},
                           { 1,   7, 100,  14,  6},
                           { 9,  10,  11,  12, 13} };
         

        int rows = array2d.GetUpperBound(0) + 1;
        int cols = array2d.GetUpperBound(1) + 1;

        Console.WriteLine(rows);
        Console.WriteLine(cols);
    }
}




 
/*
run:
 
4
5
 
*/

 

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Answer 3

using System;

class Program
{
    static void Main() {
        int[,] array2d = { { 1,   2,   3,   6,  0},
                           {-5,  -4,   0,   7,  9},
                           { 1,   7, 100,  14,  6},
                           { 9,  10,  11,  12, 13} };
         

        int rows = array2d.GetLength(0);
        int cols = array2d.GetLength(1);

        Console.WriteLine(rows);
        Console.WriteLine(cols);
    }
}




 
/*
run:
 
4
5
 
*/

 

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Answer 4

using System;

class Program
{
    static void Main() {
        int[,] array2d = new int[2, 3] { { 1, 8, 5 }, 
                                         { 6, 7, 1 } };
                                           
        int rows = array2d.GetLength(0);
        int cols = array2d.GetLength(1);

        Console.WriteLine(rows);
        Console.WriteLine(cols);
    }
}




 
/*
run:
 
2
3
 
*/

 

70+ SQL courses for beginners and professionals