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.

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;

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

public class Example

    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("{0} is a value type: {1}", t.FullName, flag);
// The example displays the following output:
//        NumEnum is a value type: True

.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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