Array.GetValue() Method in C# with Examples | Set – 1

Array.GetValue() Method in C# is used to gets the value of the specified element in the current Array. There are total 8 methods in the overload list of this method which are as follows:

• Array.GetValue(Int32, Int32)
• Array.GetValue(Int64, Int64)
• Array.GetValue(Int32)
• Array.GetValue(Int64)
• Array.GetValue(Int32, Int32, Int32)
• Array.GetValue(Int64, Int64, Int64)
• GetValue(Int32[])
• GetValue(Int64[])

Here, we are explaining the first two methods i.e. Array.GetValue(Int32, Int32) and Array.GetValue(Int64, Int64) method.

GetValue(Int32, Int32) method is used to get the value at the specified position in the two-dimensional Array. The indexes are specified as 32-bit integers.

Syntax:

public object GetValue (int index1, int index2);

Here,

• “index1” is the index of the row in which the element is located.
• “index2” is the index of the column in which the element is located.

Return: This method returns the element at the specified index define by the passed parameters in the 2D array.

Exceptions:

• ArgumentException: The current Array does not have exactly two dimensions.
• IndexOutOfRangeException: Either index1 or index2 is outside the range of valid indexes for the corresponding dimension of the current Array.

GetValue(Int64, Int64) method is used to get the value at the specified position in the two-dimensional Array. The indexes are specified as 64-bit integers.

Syntax:

public object GetValue (long index1, long index2);

Here,

• “index1” is the index of the row in which the element is located.
• “index2” is the index of the column in which the element is located.

Return: This method returns the element at the specified index define by the passed parameters in the 2D array.

Exceptions:

• ArgumentException: The current Array does not have exactly two dimensions.
• IndexOutOfRangeException: Either index1 or index2 is outside the range of valid indexes for the corresponding dimension of the current Array.

Example 1:

// C# program to demonstrate Array.GetValue(Int32, Int32)
// and array.GetValue(Int64 , Int64) method
using System;
public class GFG {

public static void Main()
{
    // declare a character array
    char[,] arr = new char[3,2]
    {
        { 'A', 'B' },
        { 'C', 'D' },
        { 'E', 'F' }

    };

    // using  GetValue(Int32, Int32) and
    // GetValue(Int64, Int64) method
    Console.WriteLine("element at index [0,0] is : " + arr.GetValue(0,0));
    Console.WriteLine("element at index [1,1] is : " + arr.GetValue(1,1));
    Console.WriteLine("element at index [0,1] is : " + arr.GetValue(0,1));
    Console.WriteLine("element at index [1,0] is : " + arr.GetValue(1,0));
    Console.WriteLine("element at index [2,0] is : " + arr.GetValue(2,0));
    Console.WriteLine("element at index [2,1] is : " + arr.GetValue(2,1));
}
}

Output:

element at index [0,0] is : A
element at index [1,1] is : D
element at index [0,1] is : B
element at index [1,0] is : C
element at index [2,0] is : E
element at index [2,1] is : F

Example 2:

// C# program to demonstrate Array.GetValue(Int32, Int32)
// and array.GetValue(Int64 , Int64) method
using System;
public class GFG {

public static void Main()
{
    // declare a string array
    string[,] arr = new string[3,2];

      // use "SetValue()" method to set
      // the value at specified index
      arr.SetValue( "C++", 0, 0 );
      arr.SetValue( "Java", 0, 1 );
      arr.SetValue( "C#", 1, 0 );
      arr.SetValue( "Perl", 1, 1 );
      arr.SetValue( "Python", 2, 0 );
      arr.SetValue( "PHP", 2, 1 );

    /*the array look like
      | C++ |    | Java|
      | C#  |    | Perl|
      | python|  | PHP |
    */

    // Using GetValue(Int32, Int32) and
    // GetValue(Int64, Int64) method
    Console.WriteLine("element at index [0,0] is : " + arr.GetValue(0,0));
    Console.WriteLine("element at index [1,1] is : " + arr.GetValue(1,1));
    Console.WriteLine("element at index [0,1] is : " + arr.GetValue(0,1));
    Console.WriteLine("element at index [1,0] is : " + arr.GetValue(1,0));
    Console.WriteLine("element at index [2,0] is : " + arr.GetValue(2,0));
    Console.WriteLine("element at index [2,1] is : " + arr.GetValue(2,1));
}
}

Output:

element at index [0, 0] is : C++
element at index [1, 1] is : Perl
element at index [0, 1] is : Java
element at index [1, 0] is : C#
element at index [2, 0] is : Python
element at index [2, 1] is : PHP

Note: For online compiler it is not possible to use 32-bit or 64-bit integer. Use offline compiler for 32 or 64-bit integer.