1.30. C # Array class

Array class is the base class for all arrays in C #. It is defined in the System , which is defined in the namespace. Array class provides a variety of properties and methods for arrays.

1.30.1. Properties of the Array class #

The following table lists some of the most commonly used properties in the Array :

Serial number	Attribute & description
1	IsFixedSize gets a value indicating whether the array has a fixed size.
2	IsReadOnly gets a value indicating whether the array is read-only.
3	Length gets a 32-bit integer that represents the total number of elements inthe array of all dimensions.
4	LongLength gets a 64-bit integer that represents the total number of elements in the array of all dimensions.
5	Rank gets the rank (dimension) of the array.

If you need to know Array for a complete list of properties of the class, please refer to Microsoft’s C # documentation.

1.30.2. Methods of the Array class #

The following table lists some of the most commonly used methods in the Array :

Serial number	Method & description
1	Clear sets a range of elements in the array to zero, false, or null, depending on the type of element.
2	Copy (Array, Array, Int32) copies a range of elements from the first elementof the array to the first element position of another array. The length is specified by a 32-bit integer.
3	CopyTo (Array, Int32) copies all elements from the current one-dimensional array to the specified index location of a specified one-dimensional array. The index is specified by a 32-bit integer.
4	GetLength gets a 32-bit integer that represents the total number of elementsin the array of the specified dimension.
5	GetLongLength gets a 64-bit integer that represents the total number of elements in the array of the specified dimension.
6	GetLowerBound gets the lower bound of the specified dimension in the array.
7	GetType gets the type of the current instance. Inherits from objects.
8	GetUpperBound gets the upper bound of the specified dimension in the array.
9	GetValue (Int32) gets the value of the specified position in an one - dimensional array. The index is specified by a 32-bit integer.
10	IndexOf (Array, Object) searches for the specified object and returns the index that first appears in the entire one-dimensional array.
11	Reverse (Array) reverses the order of elements in the entire one-dimensionalarray.
12	SetValue (Object, Int32) sets a value for the element at the specified position in the one-dimensional array. The index is specified by a 32-bit integer.
13	Sort (Array) uses the IComparable implementation of each element of the array to sort the elements in the entire one-dimensional array.
14	ToString returns a string that represents the current object. Inherits from objects.

If you need to know Array for a complete list of methods for the class,please refer to Microsoft’s C # documentation.

1.30.3. Example #

The following program demonstrates the use of some methods of Array :

Example #

using System;
namespace ArrayApplication
{
    class MyArray
    {

        static void Main(string[] args)
        {
            int[] list = { 34, 72, 13, 44, 25, 30, 10 };

            Console.Write("Original array： ");
            foreach (int i in list)
            {
                Console.Write(i + " ");
            }
            Console.WriteLine();

            // Reverse Array
            Array.Reverse(list);
            Console.Write("Reverse Array： ");
            foreach (int i in list)
            {
                Console.Write(i + " ");
            }
            Console.WriteLine();

            // Sort Array
            Array.Sort(list);
            Console.Write("Sort Array： ");
            foreach (int i in list)
            {
                Console.Write(i + " ");
            }
            Console.WriteLine();

           Console.ReadKey();
        }
    }
}

When the above code is compiled and executed, it produces the following results:

Original array: 34 72 13 44 25 30 10
Reverse array: 10 30 25 44 13 72 34
Sort array: 10 13 25 30 34 44 72