IsArrayImpl Method

Type.IsArrayImpl Method

When overridden in a derived class, implements the IsArray property and determines whether the Type is an array.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

protected abstract bool IsArrayImpl()

Return Value

Type: System.Boolean
true if the Type is an array; otherwise, false.

An instance of the Array class must return false because it is an object, not an array.

The following example overrides the IsArrayImpl method in the MyTypeDelegator class, checks if a variable is an array, and displays the result.

using System;
using System.Reflection;
public class MyTypeDelegator : TypeDelegator
    public string myElementType = null;
    public Type myType;
    public MyTypeDelegator(Type myType) : base(myType)
        this.myType = myType;
    // Override IsArrayImpl(). 
    protected override bool IsArrayImpl()
        // Determine whether the type is an array. 
            myElementType = "array";
            return true;
        // Return false if the type is not an array. 
        return false;  
public class Type_IsArrayImpl
    public static void Main()
            int myInt = 0 ; 
            // Create an instance of an array element. 
            int[] myArray = new int[5];
            MyTypeDelegator myType = new MyTypeDelegator(myArray.GetType());
            Console.WriteLine("\nDetermine whether the variable is an array.\n");
            // Determine whether myType is an array type.   
            if( myType.IsArray)
                Console.WriteLine("The type of myArray is {0}.", myType.myElementType);
                Console.WriteLine("myArray is not an array.");
            myType = new MyTypeDelegator(myInt.GetType());

            // Determine whether myType is an array type.  
            if( myType.IsArray)
                Console.WriteLine("The type of myInt is {0}.", myType.myElementType);
                Console.WriteLine("myInt is not an array.");
        catch( Exception e )
            Console.WriteLine("Exception: {0}", e.Message );

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Community Additions

© 2016 Microsoft