FieldInfo.IsAssembly Vlastnost

Definice

Získá hodnotu, která označuje, zda je potenciální viditelnost tohoto pole popsána Assembly ; to znamená, že pole je viditelné nejvýše s jinými typy ve stejném sestavení a není viditelné pro odvozené typy mimo sestavení.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 : bool
Public ReadOnly Property IsAssembly As Boolean

Hodnota vlastnosti

Boolean

true Pokud viditelnost tohoto pole je přesně popsána v části Assembly , v opačném případě false .true if the visibility of this field is exactly described by Assembly; otherwise, false.

Implementuje

Příklady

Následující příklad kódu definuje pole s různou úrovní viditelnosti a zobrazuje hodnoty IsAssembly IsFamily vlastností,, a IsFamilyOrAssembly 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

Poznámky

Skutečná viditelnost pole je omezena viditelností jeho typu.The actual visibility of a field is limited by the visibility of its type. IsAssemblyVlastnost může být true pro pole, ale pokud je to pole privátního vnořeného typu, pole není viditelné mimo nadřazený typ.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.

Viditelnost pole je přesně popsána v FieldAttributes.Assembly případě, že je jediný modifikátor viditelnosti internal ( Friend v Visual Basic).The visibility of a field is exactly described by FieldAttributes.Assembly if the only visibility modifier is internal (Friend in Visual Basic). Tato vlastnost je určena false pro pole, která jsou protected internal v jazyce C# ( Protected Friend v Visual Basic protected public v jazyce C++); IsFamilyOrAssembly k identifikaci takových polí použijte vlastnost.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.

Platí pro

Viz také