Csharp/CSharp Tutorial/String/String Array

A two-dimensional rectangular string array

using System;
class MainClass
{
  public static void Main()
  {
    const int rows = 8;
    const int columns = 8;
    string[,] stringArray = new string[rows, columns];
    stringArray[0, 0] = "R";
    stringArray[1, 0] = "P";
    stringArray[2, 3] = "K";
    stringArray[3, 5] = "B";
    stringArray[4, 4] = "A";
    stringArray[5, 3] = "E";
    for (int row = 0; row < rows; row++)
    {
      for (int column = 0; column < columns; column++)
      {
        Console.WriteLine("stringArray[" + row + ", " + column + "] = " +
          stringArray[row, column]);
      }
    }
  }
}

stringArray[0, 0] = R
stringArray[0, 1] =
stringArray[0, 2] =
stringArray[0, 3] =
stringArray[0, 4] =
stringArray[0, 5] =
stringArray[0, 6] =
stringArray[0, 7] =
stringArray[1, 0] = P
stringArray[1, 1] =
stringArray[1, 2] =
stringArray[1, 3] =
stringArray[1, 4] =
stringArray[1, 5] =
stringArray[1, 6] =
stringArray[1, 7] =
stringArray[2, 0] =
stringArray[2, 1] =
stringArray[2, 2] =
stringArray[2, 3] = K
stringArray[2, 4] =
stringArray[2, 5] =
stringArray[2, 6] =
stringArray[2, 7] =
stringArray[3, 0] =
stringArray[3, 1] =
stringArray[3, 2] =
stringArray[3, 3] =
stringArray[3, 4] =
stringArray[3, 5] = B
stringArray[3, 6] =
stringArray[3, 7] =
stringArray[4, 0] =
stringArray[4, 1] =
stringArray[4, 2] =
stringArray[4, 3] =
stringArray[4, 4] = A
stringArray[4, 5] =
stringArray[4, 6] =
stringArray[4, 7] =
stringArray[5, 0] =
stringArray[5, 1] =
stringArray[5, 2] =
stringArray[5, 3] = E
stringArray[5, 4] =
stringArray[5, 5] =
stringArray[5, 6] =
stringArray[5, 7] =
stringArray[6, 0] =
stringArray[6, 1] =
stringArray[6, 2] =
stringArray[6, 3] =
stringArray[6, 4] =
stringArray[6, 5] =
stringArray[6, 6] =
stringArray[6, 7] =
stringArray[7, 0] =
stringArray[7, 1] =
stringArray[7, 2] =
stringArray[7, 3] =
stringArray[7, 4] =
stringArray[7, 5] =
stringArray[7, 6] =
stringArray[7, 7] =

Change element in a string array

using System; 
 
class MainClass {  
  public static void Main() {  
    string[] str = { "This", "is", "a", "test." };  
  
    Console.WriteLine("Original array: ");  
    for(int i=0; i < str.Length; i++) 
      Console.Write(str[i] + " ");  
    Console.WriteLine("\n");  
  
    // change a string  
    str[1] = "was";  
    str[3] = "test, too!";  
  
    Console.WriteLine("Modified array: "); 
    for(int i=0; i < str.Length; i++) 
      Console.Write(str[i] + " ");  
  }  
}

Original array:
This is a test.
Modified array:
This was a test, too!

Initialize string arrays

using System;
class MainClass
{
  public static void Main()
  {
    string[] stringArray = {"Hello", "World"};
    foreach (string myString in stringArray)
    {
      Console.WriteLine("myString = " + myString);
    }
  }
}

myString = Hello
myString = World

Use the Sort() method to sort the elements in a string array

using System;
class MainClass
{
  public static void Main()
  {
    
    string[] stringArray = {"t", "i", "a", "test", "abc123", "abc345"};
    Array.Sort(stringArray);  
    Console.WriteLine("Sorted stringArray:");
    for (int i = 0; i < stringArray.Length; i++)
    {
      Console.WriteLine("stringArray[" + i + "] = " + stringArray[i]);
    }
  }
}

Sorted stringArray:
stringArray[0] = a
stringArray[1] = abc123
stringArray[2] = abc345
stringArray[3] = i
stringArray[4] = t
stringArray[5] = test