IsAssembly Property

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)

property bool IsAssembly {
	virtual bool get() sealed;

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.


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

using namespace System;
using namespace System::Reflection;

public ref class Example
    void m_public() {};
    void m_internal() {};
    void m_protected() {};
protected public:
    void m_protected_public() {};
protected private:
    void m_protected_private() {};

void main()
    Console::WriteLine("\n{0,-30}{1,-18}{2}", "", "IsAssembly", "IsFamilyOrAssembly"); 
        "", "IsPublic", "IsFamily", "IsFamilyAndAssembly");

    for each (MethodBase^ m in Example::typeid->GetMethods(
        BindingFlags::Instance | BindingFlags::NonPublic | BindingFlags::Public))
        if (m->Name->Substring(0, 1) == "m")

/* This code example produces output similar to the following:

                              IsAssembly        IsFamilyOrAssembly
                     IsPublic          IsFamily          IsFamilyAndAssembly

m_public             True     False    False    False    False
m_internal           False    True     False    False    False
m_protected          False    False    True     False    False
m_protected_public   False    False    False    True     False
m_protected_private  False    False    False    False    True

Universal Windows Platform
Available since 4.5
.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
Windows Phone
Available since 8.1
Return to top
© 2015 Microsoft