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MethodBase.IsFamilyOrAssembly Property
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Gets a value that indicates whether the potential visibility of this method or constructor is described by MethodAttributes.FamORAssem; that is, the method or constructor can be called by derived classes wherever they are, and by classes in the same assembly.
Namespace: System.Reflection
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public ReadOnly Property IsFamilyOrAssembly As Boolean
public bool IsFamilyOrAssembly { get; }
Property Value
Type: System.Boolean
true if access to this method or constructor is exactly described by MethodAttributes.FamORAssem; otherwise, false.
Remarks
If a type member has MethodAttributes.FamORAssem visibility, it can be called from any member in a derived class or any member in the same assembly, but not from any other type.
The actual visibility of a method is limited by the visibility of its type. The IsFamilyOrAssembly property might be true for a method, but if it is a method of a private nested type, the method is not visible outside the containing type.
The visibility of a method or constructor is exactly described by MethodAttributes.FamORAssem if the visibility modifier is protected internal in C# (Protected Friend in Visual Basic, protected public in C++).
Examples
The following 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. |
To run this example, see Building Examples That Use a Demo Method and a TextBlock Control.
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 Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
outputBlock.FontFamily = New FontFamily("Courier New")
outputBlock.Text &= String.Format(vbCrLf & _
"{0,-30}{1,-18}{2}", "", "IsAssembly", "IsFamilyOrAssembly") & vbCrLf
outputBlock.Text &= String.Format("{0,-21}{1,-18}{2,-18}{3}" & vbCrLf, _
"", "IsPublic", "IsFamily", "IsFamilyAndAssembly") & vbCrLf
For Each m As MethodBase In GetType(Example).GetMethods( _
BindingFlags.Instance Or BindingFlags.NonPublic Or BindingFlags.Public)
If Left(m.Name, 1) = "m" Then
outputBlock.Text &= String.Format("{0,-21}{1,-9}{2,-9}{3,-9}{4,-9}{5,-9}", _
m.Name, _
m.IsPublic, _
m.IsAssembly, _
m.IsFamily, _
m.IsFamilyOrAssembly, _
m.IsFamilyAndAssembly _
) & vbCrLf
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
using System;
using System.Reflection;
using System.Windows.Media;
public class Example
{
public void m_public() { }
internal void m_internal() { }
protected void m_protected() { }
protected internal void m_protected_public() { }
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
outputBlock.FontFamily = new FontFamily("Courier New");
outputBlock.Text += String.Format("\n{0,-30}{1,-18}{2}", "", "IsAssembly", "IsFamilyOrAssembly") + "\n";
outputBlock.Text += String.Format("{0,-21}{1,-18}{2,-18}{3}\n",
"", "IsPublic", "IsFamily", "IsFamilyAndAssembly") + "\n";
foreach (MethodBase m in typeof(Example).GetMethods(
BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
{
if (m.Name.Substring(0, 1) == "m")
{
outputBlock.Text += String.Format("{0,-21}{1,-9}{2,-9}{3,-9}{4,-9}{5,-9}",
m.Name,
m.IsPublic,
m.IsAssembly,
m.IsFamily,
m.IsFamilyOrAssembly,
m.IsFamilyAndAssembly
) + "\n";
}
}
}
}
/* 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
*/
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.