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Type.IsVisible Property

Gets a value indicating whether the Type can be accessed by code outside the assembly.

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

public bool IsVisible { get; }

Property Value

Type: System.Boolean
true if the current Type is a public type or a public nested type such that all the enclosing types are public; otherwise, false.

Use this property to determine whether a type is part of the public interface of a component assembly.

The following code example tests two classes, only one of which is visible outside the assembly.

using System;

internal class InternalOnly 
{
    public class Nested {}
}

public class Example
{
    public class Nested {}

    public static void Main()
    {
        Type t = typeof(InternalOnly.Nested);
        Console.WriteLine(
            "Is the {0} class visible outside the assembly? {1}", 
            t.FullName, 
            t.IsVisible
        );

        t = typeof(Example.Nested);
        Console.WriteLine(
            "Is the {0} class visible outside the assembly? {1}", 
            t.FullName, 
            t.IsVisible
        );
    }
}

/* This example produces the following output:

Is the InternalOnly+Nested class visible outside the assembly? False
Is the Example+Nested class visible outside the assembly? True
 */

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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