Type.IsNested 属性

参考

定义

命名空间:: System

程序集:: System.Runtime.dll

程序集:: netstandard.dll

程序集:: mscorlib.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

获取一个指示当前 Type 对象是否表示其定义嵌套在另一个类型的定义之内的类型的值。

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

public bool IsNested { get; }

member this.IsNested : bool

Public ReadOnly Property IsNested As Boolean

属性值

Boolean

如果 true 嵌套在另一个类型内，则为 Type；否则为 false。

示例

以下示例创建一个外部类，该类具有许多具有各种类型的可见性的嵌套类。然后，它检索父类型及其每个嵌套类型的许多与可见性 Type 相关的属性的值。

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

注解

无论 IsNested 可见性 true 如何，属性都会返回所有嵌套类型。若要同时测试嵌套和可见性，请使用相关属性 IsNestedAssembly IsNestedFamily IsNestedFamANDAssem IsNestedFamORAssem IsNestedPrivate 、、或 IsNestedPublic 。

备注

VisibilityMask枚举成员选择类型的可见性属性。

适用于

Type.IsNested 属性

定义

属性值

示例

注解

适用于

另请参阅

其他资源