Expand Minimize

Type.IsValueType Property

Gets a value indicating whether the Type is a value type.

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

public bool IsValueType { get; }

Property Value

Type: System.Boolean
true if the Type is a value type; otherwise, false.

Implements

_Type.IsValueType

Value types are types that are represented as sequences of bits; value types are not classes or interfaces. Value types are referred to as "structs" in some programming languages. Enums are a special case of value types.

This property returns false for the ValueType class, because ValueType is not a value type itself. It is the base class for all value types, and therefore any value type can be assigned to it. This would not be possible if ValueType itself was a value type. Value types are boxed when they are assigned to a field of type ValueType.

This property returns true for enumerations, but not for the Enum type itself. For an example that demonstrates this behavior, see IsEnum.

This property is read-only.

The following example creates a variable of type MyEnum, checks for the IsValueType property, and displays the result.

using System;

public class Example
{
    // Declare an enum type. 
    enum NumEnum { One, Two }

    public static void Main(string []args)
    {
        bool flag = false;
        NumEnum testEnum = NumEnum.One;
        // Get the type of myTestEnum.
        Type t = testEnum.GetType();
        // Get the IsValueType property of the myTestEnum variable.
        flag = t.IsValueType;
        Console.WriteLine("Is {0} a value type? {1}.", t.FullName, flag);
    }
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft