Last Updated : 11 Jul, 2025
Array.LongLength Propertyis used to get a
64-bitinteger that represents the total number of elements in all the dimensions of the
Array.
Syntax:public long LongLength { get; }Property Value:
This property returns a 64-bit integer that represents the total number of elements in all the dimensions of the Array.
Example: CSharp
// C# program to illustrate the
// Array.LongLength Property
using System;
namespace geeksforgeeks {
class GFG {
// Main Method
public static void Main()
{
// Two-dimensional array
int[, ] intarray = new int[, ] { { 1, 2 },
{ 3, 4 },
{ 5, 6 },
{ 7, 8 } };
// The same array with dimensions
// specified 4 row and 2 column.
int[, ] intarray_d = new int[4, 2] { { 1, 2 },
{ 3, 4 },
{ 5, 6 },
{ 7, 8 } };
Console.Write("Total Number of Elements in intarray: ");
// using LongLength property
Console.Write(intarray.LongLength);
// getting the type of returned value
Console.WriteLine("\nType of returned Length: "
+ (intarray.LongLength).GetType());
// showing difference between Length
// and LongLength property by getting
// the type of the both property's
// returned value
Console.Write("\nTotal Number of Elements in intarray_d: ");
// using Length property
Console.Write(intarray_d.Length);
// getting the type of returned value
Console.WriteLine("\nType of returned Length: "
+ (intarray_d.Length).GetType());
Console.Write("\nTotal Number of Elements in intarray_d: ");
// using LongLengthLength property
Console.Write(intarray_d.LongLength);
// getting the type of returned value
Console.WriteLine("\nType of returned Length: "
+ (intarray_d.LongLength).GetType());
}
}
}
Output:
Total Number of Elements in intarray: 8 Type of returned Length: System.Int64 Total Number of Elements in intarray_d: 8 Type of returned Length: System.Int32 Total Number of Elements in intarray_d: 8 Type of returned Length: System.Int64Note:
In the above program you can see that
Array.Length
property always returns the length of the type
System.Int32but
Array.LongLength
property always returns the length of the type
System.Int64.
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