C# | Check if an Array has fixed size or not
Last Updated :
01 Feb, 2019
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Array.IsFixedSize Property is used to get a get a value indicating whether the Array has a fixed size. This property implements the
CSharp
CSharp
IList.IsFixedSize Property .
Syntax:
public bool IsFixedSize { get; }
Property Value: This property is always return true for all arrays.
Below programs illustrate the use of above-discussed property:
Example 1:
// C# program to illustrate
// IsFixedSize of Array class
using System;
namespace geeksforgeeks {
class GFG {
// Main Method
public static void Main()
{
// declares an 1D Array of string
string[] topic;
// allocating memory for topic.
topic = new string[] {"Array, ", "String, ",
"Stack, ", "Queue, ",
"Exception, ", "Operators"};
// Displaying Elements of the array
Console.WriteLine("Topic of C#:");
foreach(string ele in topic)
Console.WriteLine(ele + " ");
Console.WriteLine();
// Here we check whether is
// array of fixed size or not
Console.WriteLine("Result: " + topic.IsFixedSize);
}
}
}
Output:
Example 2:
Topic of C#: Array, String, Stack, Queue, Exception, Operators Result: True
// C# program to illustrate
// IsFixedSize of Array class
using System;
namespace geeksforgeeks {
class GFG {
// Main Method
public static void Main()
{
// declares a 1D Array of string
// and assigning null to it
string[] str = new string[] {null};
// Here we check whether is
// array of fixed size or not
Console.WriteLine("Result: " + str.IsFixedSize);
}
}
}
Output:
Note:
Result: True
- Array implements the IsFixedSize property because it is required by the
System.Collections.IListinterface. - An array with a fixed size does not allow the addition or removal of elements after the creation of an array, but modification of existing elements are allowed.
- Retrieving the value of this property is an O(1) operation.
