declare array class c# code example

Example 1: c# create array

// Define and Initialize
int[] arr = {1, 2, 3};

// Buuuut:
// Initial defining
int[] arr;

// This works
arr = new int[] {1, 2, 3};   

// This will cause an error
// arr = {1, 2, 3};

Example 2: how to make a c# array

// Syntax: 
datatype_variable[dimension] = new datatype[size]{array};

// For example:
string MyArray[] = new string[1]{"Hello","World"};

// or just:
string MyArray[]={"Hello","world"};

// for multidimensions:
// 2D array:
         	  // 2 arrays, 3 values //
int MyArray=[,]=new int[1,2]{
  {1,2,3},
  {1,2,3}
}

// 3D array:
              // 2 arrays, 3 arrays, 4 values //
int MyArray=[,,]=new int[1,2,3]{
  {
    {1,2,3,4},
    {1,2,3,4},
    {1,2,3,4}
  },
  {
    {1,2,3,4},
    {1,2,3,4},
    {1,2,3,4}
  }
}