FieldInfo.IsAssembly Property
Definition
Important
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Gets a value indicating whether the potential visibility of this field is described by Assembly; that is, the field is visible at most to other types in the same assembly, and is not visible to derived types outside the assembly.
public:
property bool IsAssembly { bool get(); };public bool IsAssembly { get; }member this.IsAssembly : boolPublic ReadOnly Property IsAssembly As BooleanProperty Value
true if the visibility of this field is exactly described by Assembly; otherwise, false.
Implements
Examples
The following code example defines fields with varying levels of visibility, and displays the values of their IsAssembly, IsFamily, IsFamilyOrAssembly, and IsFamilyAndAssembly properties.
using namespace System;
using namespace System::Reflection;
public ref class Example
{
public:
int f_public;
internal:
int f_internal;
protected:
int f_protected;
protected public:
int f_protected_public;
protected private:
int f_protected_private;
};
void main()
{
Console::WriteLine("\n{0,-30}{1,-18}{2}", "", "IsAssembly", "IsFamilyOrAssembly");
Console::WriteLine("{0,-21}{1,-18}{2,-18}{3}\n",
"", "IsPublic", "IsFamily", "IsFamilyAndAssembly");
for each (FieldInfo^ f in Example::typeid->GetFields(
BindingFlags::Instance | BindingFlags::NonPublic | BindingFlags::Public))
{
Console::WriteLine("{0,-21}{1,-9}{2,-9}{3,-9}{4,-9}{5,-9}",
f->Name,
f->IsPublic,
f->IsAssembly,
f->IsFamily,
f->IsFamilyOrAssembly,
f->IsFamilyAndAssembly
);
}
}
/* This code example produces output similar to the following:
IsAssembly IsFamilyOrAssembly
IsPublic IsFamily IsFamilyAndAssembly
f_public True False False False False
f_internal False True False False False
f_protected False False True False False
f_protected_public False False False True False
f_protected_private False False False False True
*/
using System;
using System.Reflection;
public class Example
{
public int f_public;
internal int f_internal;
protected int f_protected;
protected internal int f_protected_public;
private protected int f_private_protected;
public static void Main()
{
Console.WriteLine("\n{0,-30}{1,-18}{2}", "", "IsAssembly", "IsFamilyOrAssembly");
Console.WriteLine("{0,-21}{1,-18}{2,-18}{3}\n",
"", "IsPublic", "IsFamily", "IsFamilyAndAssembly");
foreach (FieldInfo f in typeof(Example).GetFields(
BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
{
Console.WriteLine("{0,-21}{1,-9}{2,-9}{3,-9}{4,-9}{5,-9}",
f.Name,
f.IsPublic,
f.IsAssembly,
f.IsFamily,
f.IsFamilyOrAssembly,
f.IsFamilyAndAssembly
);
}
}
}
/* This code example produces output similar to the following:
IsAssembly IsFamilyOrAssembly
IsPublic IsFamily IsFamilyAndAssembly
f_public True False False False False
f_internal False True False False False
f_protected False False True False False
f_protected_public False False False True False
f_private_protected False False False False True
*/
Imports System.Reflection
Public class Example
Public f_Public As Integer
Friend f_Friend As Integer
Protected f_Protected As Integer
Protected Friend f_Protected_Friend As Integer
Private Protected f_Private_Protected() As Integer
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 f As FieldInfo In GetType(Example).GetFields( _
BindingFlags.Instance Or BindingFlags.NonPublic Or BindingFlags.Public)
Console.WriteLine("{0,-21}{1,-9}{2,-9}{3,-9}{4,-9}{5,-9}", _
f.Name, _
f.IsPublic, _
f.IsAssembly, _
f.IsFamily, _
f.IsFamilyOrAssembly, _
f.IsFamilyAndAssembly _
)
Next
End Sub
End Class
' This code example produces output similar to the following:
'
' IsAssembly IsFamilyOrAssembly
' IsPublic IsFamily IsFamilyAndAssembly
'
'f_Public True False False False False
'f_Friend False True False False False
'f_Protected False False True False False
'f_Protected_Friend False False False True False
'f_Private_Protected False False False False True
Remarks
The actual visibility of a field is limited by the visibility of its type. The IsAssembly property might be true for a field, but if it is a field of a private nested type then the field is not visible outside the containing type.
The visibility of a field is exactly described by FieldAttributes.Assembly if the only visibility modifier is internal (Friend in Visual Basic). This property is false for fields that are protected internal in C# (Protected Friend in Visual Basic, protected public in C++); use the IsFamilyOrAssembly property to identify such fields.
