C# for loop to count through array not working

Question

I am trying to make a C# for loop that will loop through an array of items and print the first date of the user. Below is the code for the array (which i think is correct).

string[,] arrHolidays = new string[2, 3];
arrHolidays[0, 0] = "10/05/2015";
arrHolidays[0, 1] = "15/05/2015";
arrHolidays[0, 2] = "Danny";
arrHolidays[1, 0] = "20/05/2015";
arrHolidays[1, 1] = "22/05/2015";
arrHolidays[1, 2] = "Kieran";

Below is the code for the For loop (which is throwing the error)

for(int i = 0; i < arrHolidays.Length; i++)
{
    Console.WriteLine(arrHolidays[i, 0]);            
}

Index out of range exception was unhandled. this is the error I am recieving. When it throws the error and I check the value of 1 it is 2 if this is any help in resolving it. What I am expecting to see is this in the console app: 10/05/2015 20/05/2015

INB4 I have hardly any c# experience this is my first project, so please explain any help :)

Answer 1

You must use GetLength method, not the Length property.

The Length property for a multi-dimensional array returns the total count of all the items in the array. The GetLength method returns the number of size of a given dimension (where dimension is specified as a zero-based index).

So, arrHolidays.Length will return 6.

Change for loop to:

  for (int i = 0; i < arrHolidays.GetLength(0); i++)
  {
        Console.WriteLine(arrHolidays[i, 0]);
  }

Answer 2

Array.GetLength(int dimension)

In your case, you want to get the length of the first dimension, so arrHolidays.GetLength(0).