Type.IsNested 屬性

定義

命名空間:

System

組件:

System.Runtime.dll

Source:

Type.cs

取得值，表示目前的 Type 物件代表的類型之定義是否位於另一個類型的定義內部。

public:
 property bool IsNested { bool get(); };

public bool IsNested { get; }

member this.IsNested : bool

Public ReadOnly Property IsNested As Boolean

屬性值

Boolean

如果 Type 是位於另一個型別內部，則為 true，否則為 false。

範例

下列範例會建立具有各種可見度類型之巢狀類別的外部類別。 然後，它會擷取父型別及其每個巢狀類型的一些可見度相關 Type 屬性值。

using System;

// Create a class with a number of nested classes.
public class OuterClass
{
    private class PrivateClass
    {}

    protected class ProtectedClass
    {}

    internal class InternalClass
    {}

    protected internal class ProtectedInternalClass
    {}

    public class PublicClass
    {}

    public static void Main()
    {
        // Create an array of Type objects for all the classes.
        Type[] types = { typeof(OuterClass),
                         typeof(OuterClass.PublicClass),
                         typeof(OuterClass.PrivateClass),
                         typeof(OuterClass.ProtectedClass),
                         typeof(OuterClass.InternalClass),
                         typeof(OuterClass.ProtectedInternalClass) };
        // Display the property values of each nested class.
        foreach (var type in types) {
           Console.WriteLine("\n{0} property values:", type.Name);
           Console.WriteLine("   Public Class: {0}", type.IsPublic);
           Console.WriteLine("   Not a Public Class: {0}", type.IsNotPublic);
           Console.WriteLine("   Nested Class: {0}", type.IsNested);
           Console.WriteLine("   Nested Private Class: {0}", type.IsNestedPrivate);
           Console.WriteLine("   Nested Internal Class: {0}", type.IsNestedAssembly);
           Console.WriteLine("   Nested Protected Class: {0}", type.IsNestedFamily);
           Console.WriteLine("   Nested Family Or Assembly Class: {0}", type.IsNestedFamORAssem);
           Console.WriteLine("   Nested Family And Assembly Class: {0}", type.IsNestedFamANDAssem);
           Console.WriteLine("   Nested Public Class: {0}", type.IsNestedPublic);
        }
    }
}
// The example displays the following output:
//    OuterClass property values:
//       Public Class: True
//       Not a Public Class: False
//       Nested Class: False
//       Nested Private Class: False
//       Nested Internal Class: False
//       Nested Protected Class: False
//       Nested Family Or Assembly Class: False
//       Nested Family And Assembly Class: False
//       Nested Public Class: False
//
//    PublicClass property values:
//       Public Class: False
//       Not a Public Class: False
//       Nested Class: True
//       Nested Private Class: False
//       Nested Internal Class: False
//       Nested Protected Class: False
//       Nested Family Or Assembly Class: False
//       Nested Family And Assembly Class: False
//       Nested Public Class: True
//
//    PrivateClass property values:
//       Public Class: False
//       Not a Public Class: False
//       Nested Class: True
//       Nested Private Class: True
//       Nested Internal Class: False
//       Nested Protected Class: False
//       Nested Family Or Assembly Class: False
//       Nested Family And Assembly Class: False
//       Nested Public Class: False
//
//    ProtectedClass property values:
//       Public Class: False
//       Not a Public Class: False
//       Nested Class: True
//       Nested Private Class: False
//       Nested Internal Class: False
//       Nested Protected Class: True
//       Nested Family Or Assembly Class: False
//       Nested Family And Assembly Class: False
//       Nested Public Class: False
//
//    InternalClass property values:
//       Public Class: False
//       Not a Public Class: False
//       Nested Class: True
//       Nested Private Class: False
//       Nested Internal Class: True
//       Nested Protected Class: False
//       Nested Family Or Assembly Class: False
//       Nested Family And Assembly Class: False
//       Nested Public Class: False
//
//    ProtectedInternalClass property values:
//       Public Class: False
//       Not a Public Class: False
//       Nested Class: True
//       Nested Private Class: False
//       Nested Internal Class: False
//       Nested Protected Class: False
//       Nested Family Or Assembly Class: True
//       Nested Family And Assembly Class: False
//       Nested Public Class: False

' Create a Class with a number of nested Classes.
Public Class OuterClass
    Private Class PrivateClass
    End Class

    Protected Class ProtectedClass
    End Class

    Friend Class InternalClass
    End Class

    Protected Friend Class ProtectedInternalClass
    End Class

    Public Class PublicClass
    End Class

    Public Shared Sub Main()
        ' Create an array of Type objects for all the Classes.
        Dim types() As Type = { GetType(OuterClass),
                                GetType(OuterClass.PublicClass),
                                GetType(OuterClass.PrivateClass),
                                GetType(OuterClass.ProtectedClass),
                                GetType(OuterClass.InternalClass),
                                GetType(OuterClass.ProtectedInternalClass) }
        ' Display the property values of each nested Class.
        For Each type In types
           Console.WriteLine("{0} property values:", type.Name)
           Console.WriteLine("   Public Class: {0}", type.IsPublic)
           Console.WriteLine("   Not a Public Class: {0}", type.IsNotPublic)
           Console.WriteLine("   Nested Class: {0}", type.IsNested)
           Console.WriteLine("   Nested Private Class: {0}", type.IsNestedPrivate)
           Console.WriteLine("   Nested Internal Class: {0}", type.IsNestedAssembly)
           Console.WriteLine("   Nested Protected Class: {0}", type.IsNestedFamily)
           Console.WriteLine("   Nested Family Or Assembly Class: {0}", type.IsNestedFamORAssem)
           Console.WriteLine("   Nested Family And Assembly Class: {0}", type.IsNestedFamANDAssem)
           Console.WriteLine("   Nested Public Class: {0}", type.IsNestedPublic)
           Console.WriteLine()
        Next
    End Sub
End Class
' The example displays the following output:
'    OuterClass property values:
'       Public Class: True
'       Not a Public Class: False
'       Nested Class: False
'       Nested Private Class: False
'       Nested Internal Class: False
'       Nested Protected Class: False
'       Nested Family Or Assembly Class: False
'       Nested Family And Assembly Class: False
'       Nested Public Class: False
'
'    PublicClass property values:
'       Public Class: False
'       Not a Public Class: False
'       Nested Class: True
'       Nested Private Class: False
'       Nested Internal Class: False
'       Nested Protected Class: False
'       Nested Family Or Assembly Class: False
'       Nested Family And Assembly Class: False
'       Nested Public Class: True
'
'    PrivateClass property values:
'       Public Class: False
'       Not a Public Class: False
'       Nested Class: True
'       Nested Private Class: True
'       Nested Internal Class: False
'       Nested Protected Class: False
'       Nested Family Or Assembly Class: False
'       Nested Family And Assembly Class: False
'       Nested Public Class: False
'
'    ProtectedClass property values:
'       Public Class: False
'       Not a Public Class: False
'       Nested Class: True
'       Nested Private Class: False
'       Nested Internal Class: False
'       Nested Protected Class: True
'       Nested Family Or Assembly Class: False
'       Nested Family And Assembly Class: False
'       Nested Public Class: False
'
'    InternalClass property values:
'       Public Class: False
'       Not a Public Class: False
'       Nested Class: True
'       Nested Private Class: False
'       Nested Internal Class: True
'       Nested Protected Class: False
'       Nested Family Or Assembly Class: False
'       Nested Family And Assembly Class: False
'       Nested Public Class: False
'
'    ProtectedInternalClass property values:
'       Public Class: False
'       Not a Public Class: False
'       Nested Class: True
'       Nested Private Class: False
'       Nested Internal Class: False
'       Nested Protected Class: False
'       Nested Family Or Assembly Class: True
'       Nested Family And Assembly Class: False
'       Nested Public Class: False

備註

不論可見度為何，屬性 IsNested 都會 true 傳回所有巢狀類型。 若要同時測試巢狀和可見度，請使用相關的屬性 IsNestedAssembly 、、 IsNestedFamily 、 IsNestedFamANDAssemIsNestedFamORAssem 、、 IsNestedPrivate 或 IsNestedPublic 。

注意

列舉 VisibilityMask 成員會選取類型的可見度屬性。

另請參閱

• IsNestedAssembly
• IsNestedFamily
• IsNestedFamANDAssem
• IsNestedFamORAssem
• IsNestedPrivate
• IsNestedPublic