Type.IsClass Property

public bool IsClass { get; }

Implements

This property returns true for value types even if they are boxed.

The ClassSemanticsMask distinguishes a type declaration as class, interface, or value type.

If the current Type represents a constructed generic type, this property returns true if the generic type definition is a class definition; that is, it does not define an interface or a value type.

If the current Type represents a type parameter in the definition of a generic type or generic method, this property always returns false.

Note
This property returns true for Type instances that represent the Enum and ValueType classes. These two classes are the base types for enumerations and value types, respectively, but they are not enumerations or value types themselves. For more information, see the IsValueType and IsEnum properties.

This property is read-only.

The following example creates an instance of a type and indicates whether the type is a class.

using System;
using System.Reflection;

public   class MyDemoClass
{
}

public class MyTypeClass
{
    public static void Main(string[] args)
    {
        try
        {
            Type  myType = typeof(MyDemoClass);
            // Get and display the 'IsClass' property of the 'MyDemoClass' instance.
            Console.WriteLine("\nIs the specified type a class? {0}.", myType.IsClass); 
        }
        catch(Exception e)
        {
            Console.WriteLine("\nAn exception occurred: {0}." ,e.Message);
        }
    }
}

.NET Framework

.NET Framework Client Profile

Portable Class Library

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.

Reference