FieldInfo.IsFamily Propriedade
Definição
Obtém um valor que indica se a visibilidade do campo é ou não descrita por Family, ou seja, que o campo está visível somente dentro de sua classe e das classes derivadas.Gets a value indicating whether the visibility of this field is described by Family; that is, the field is visible only within its class and derived classes.
public:
property bool IsFamily { bool get(); };
public bool IsFamily { get; }
member this.IsFamily : bool
Public ReadOnly Property IsFamily As Boolean
Valor da propriedade
true Se o acesso a esse campo for descrito exatamente por Family ; caso contrário, false .true if access to this field is exactly described by Family; otherwise, false.
Implementações
Exemplos
O exemplo de código a seguir define os campos com diferentes níveis de visibilidade e exibe os valores de suas IsAssembly IsFamily Propriedades,, IsFamilyOrAssembly e IsFamilyAndAssembly .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
Comentários
A visibilidade de um campo é descrita exatamente pela FieldAttributes.Family se o único modificador de visibilidade for protected .The visibility of a field is exactly described by FieldAttributes.Family if the only visibility modifier is protected. Essa propriedade é false para os campos que estão protected internal em C# ( Protected Friend em Visual Basic, protected public em C++); Use a IsFamilyOrAssembly propriedade para identificar esses campos.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.