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MethodBase.IsAssembly Property

Gets a value indicating whether the potential visibility of this method or constructor is described by MethodAttributes.Assembly; that is, the method or constructor is visible at most to other types in the same assembly, and is not visible to derived types outside the assembly.

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

'Declaration
Public ReadOnly Property IsAssembly As Boolean

Property Value

Type: System.Boolean
true if the visibility of this method or constructor is exactly described by MethodAttributes.Assembly; otherwise, false.

The actual visibility of a method is limited by the visibility of its type. The IsAssembly property might be true for a method, but if it is a method of a private nested type then the method is not visible outside the containing type.

The visibility of a method or constructor is exactly described by MethodAttributes.Assembly if the only visibility modifier is internal (Friend in Visual Basic). This property is false for methods that are protected internal in C# (Protected Friend in Visual Basic, protected public in C++); use the IsFamilyOrAssembly property to identify such methods.

The following code example defines methods with varying levels of visibility, and displays the values of their IsAssembly, IsFamily, IsFamilyOrAssembly, and IsFamilyAndAssembly properties.

NoteNote

The Visual Basic and C# languages cannot define methods with MethodAttributes.FamANDAssem visibility; that access level appears only in the C++ example.


Imports System
Imports System.Reflection

Public class Example

    Public Sub m_Public() 
    End Sub
    Friend Sub m_Friend() 
    End Sub
    Protected Sub m_Protected() 
    End Sub
    Protected Friend Sub m_Protected_Friend() 
    End Sub

    Public Shared Sub Main()

        Console.WriteLine(vbCrLf & _
            "{0,-30}{1,-18}{2}", "", "IsAssembly", "IsFamilyOrAssembly") 
        Console.WriteLine("{0,-21}{1,-18}{2,-18}{3}" & vbCrLf, _
            "", "IsPublic", "IsFamily", "IsFamilyAndAssembly")

        For Each m As MethodBase In GetType(Example).GetMethods( _
            BindingFlags.Instance Or BindingFlags.NonPublic Or BindingFlags.Public)

            If Left(m.Name, 1) = "m"

                Console.WriteLine("{0,-21}{1,-9}{2,-9}{3,-9}{4,-9}{5,-9}", _
                    m.Name, _
                    m.IsPublic, _
                    m.IsAssembly, _
                    m.IsFamily, _
                    m.IsFamilyOrAssembly, _
                    m.IsFamilyAndAssembly _
                )
            End If
        Next
    End Sub
End Class

' This code example produces output similar to the following:
'
'                              IsAssembly        IsFamilyOrAssembly
'                     IsPublic          IsFamily          IsFamilyAndAssembly
'
'm_Public             True     False    False    False    False
'm_Friend             False    True     False    False    False
'm_Protected          False    False    True     False    False
'm_Protected_Friend   False    False    False    True     False


.NET Framework

Supported in: 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

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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