PropertyInfo.GetAccessors 方法

参考

定义

命名空间:: System.Reflection

程序集:: System.Runtime.dll

程序集:: System.Reflection.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

重要

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返回此属性上的 get 和 set 访问器数组。

重载

GetAccessors()	返回一个数组，其元素反射了由当前实例反射的属性的公共 `get` 和 `set` 访问器。
GetAccessors(Boolean)	返回一个数组，其元素反射了当前实例反射的属性的公共及非公共（如果指定）`get` 和 `set` 取值函数。

GetAccessors()

Source:: PropertyInfo.cs

Source:: PropertyInfo.cs

Source:: PropertyInfo.cs

返回一个数组，其元素反射了由当前实例反射的属性的公共 get 和 set 访问器。

public:
 cli::array <System::Reflection::MethodInfo ^> ^ GetAccessors();

public:
 virtual cli::array <System::Reflection::MethodInfo ^> ^ GetAccessors();

public System.Reflection.MethodInfo[] GetAccessors ();

member this.GetAccessors : unit -> System.Reflection.MethodInfo[]

abstract member GetAccessors : unit -> System.Reflection.MethodInfo[]
override this.GetAccessors : unit -> System.Reflection.MethodInfo[]

Public Function GetAccessors () As MethodInfo()

MethodInfo[]

如果找到访问器，此方法将返回一个 MethodInfo 对象的数组，这些对象反射了由当前实例反射的属性的公共 get 和 set 访问器；如果没有找到，此方法将返回包含零 (0) 个元素的数组。

实现

GetAccessors()

示例

以下示例检索属性的公共访问器 ClassWithProperty.Caption 并显示有关它们的信息。它还调用 setter 的方法来设置属性值，并调用 Invoke getter 的方法来检索属性值。

using System;
using System.Reflection;
 
// Define a property.
public class ClassWithProperty
{
    private string _caption = "A Default caption";

    public string Caption
    {
        get { return _caption; }
        set { if(_caption != value) _caption = value; }
    }
}
 
class Example
{
    public static void Main()
    {
        ClassWithProperty test = new ClassWithProperty();
        Console.WriteLine("The Caption property: {0}", test.Caption);
        Console.WriteLine("----------");
        // Get the type and PropertyInfo.
        Type t = Type.GetType("ClassWithProperty");
        PropertyInfo propInfo = t.GetProperty("Caption");
 
        // Get the public GetAccessors method.
        MethodInfo[] methInfos = propInfo.GetAccessors();
        Console.WriteLine("There are {0} accessors.",
                          methInfos.Length);
        for(int ctr = 0; ctr < methInfos.Length; ctr++) {
           MethodInfo m = methInfos[ctr];
           Console.WriteLine("Accessor #{0}:", ctr + 1);
           Console.WriteLine("   Name: {0}", m.Name);
           Console.WriteLine("   Visibility: {0}", GetVisibility(m));
           Console.Write("   Property Type: ");
           // Determine if this is the property getter or setter.
           if (m.ReturnType == typeof(void)) {
              Console.WriteLine("Setter");
              Console.WriteLine("   Setting the property value.");
              //  Set the value of the property.
              m.Invoke(test, new object[] { "The Modified Caption" } );
           }
           else {
              Console.WriteLine("Getter");
              // Get the value of the property.
              Console.WriteLine("   Property Value: {0}",
                                m.Invoke(test, new object[] {} ));
           }
        }
        Console.WriteLine("----------");
        Console.WriteLine("The Caption property: {0}", test.Caption);
    }

    static string GetVisibility(MethodInfo m)
    {
       string visibility = "";
       if (m.IsPublic)
          return "Public";
       else if (m.IsPrivate)
          return "Private";
       else
          if (m.IsFamily)
             visibility = "Protected ";
          else if (m.IsAssembly)
             visibility += "Assembly";
       return visibility;
    }
}
// The example displays the following output:
//       The Caption property: A Default caption
//       ----------
//       There are 2 accessors.
//       Accessor #1:
//          Name: get_Caption
//          Visibility: Public
//          Property Type: Getter
//          Property Value: A Default caption
//       Accessor #2:
//          Name: set_Caption
//          Visibility: Public
//          Property Type: Setter
//          Setting the property value.
//       ----------
//       The Caption property: The Modified Caption

Imports System.Reflection

' Define a property.
Public Class ClassWithProperty
    Private _caption As String = "A Default caption"

    Public Property Caption As String
        Get
            Return _caption
        End Get
        Set
            If _caption <> value Then _caption = value
        End Set
    End Property
End Class

Module Example
    Public Sub Main()
        Dim test As New ClassWithProperty()
        Console.WriteLine("The Caption property: {0}", test.Caption)
        Console.WriteLine("----------")
        ' Get the type and PropertyInfo.
        Dim t As Type = Type.GetType("ClassWithProperty")
        Dim propInfo As PropertyInfo = t.GetProperty("Caption")

        ' Get all the accessors.
        Dim methInfos() As MethodInfo = propInfo.GetAccessors()
        Console.WriteLine("There are {0} accessors.",
                          methInfos.Length)
        For ctr As Integer = 0 To methInfos.Length - 1
           Dim m As MethodInfo = methInfos(ctr)
           Console.WriteLine("Accessor #{0}:", ctr + 1)
           Console.WriteLine("   Name: {0}", m.Name)
           Console.WriteLine("   Visibility: {0}", GetVisibility(m))
           Console.Write("   Property Type: ")
           ' Determine if this is the property getter or setter.
''           If (m.ReturnType == typeof(void))
           If m.ReturnType Is GetType(Void) Then
              Console.WriteLine("Setter")
              Console.WriteLine("   Setting the property value.")
              ' Set the value of the property.
              m.Invoke(test, { "The Modified Caption" } )
           Else
              Console.WriteLine("Getter")
              ' Get the value of the property.
              Console.WriteLine("   Property Value: {0}",
                                m.Invoke(test, {} ))
           End If
        Next
        Console.WriteLine("----------")
        Console.WriteLine("The Caption property: {0}", test.Caption)
    End Sub
    
    Private Function GetVisibility(m As MethodInfo) As String
       Dim visibility As String = ""
       If m.IsPublic Then
          Return "Public"
       ElseIf m.IsPrivate Then
          Return "Private"
       Else
          If m.IsFamily Then
             visibility = "Protected "
          ElseIf m.IsAssembly Then
             visibility += "Assembly"
          End If
       End If
       Return visibility
    End Function
End Module
' The example displays the following output:
'       The Caption property: A Default caption
'       ----------
'       There are 2 accessors.
'       Accessor #1:
'          Name: get_Caption
'          Visibility: Public
'          Property Type: Getter
'          Property Value: A Default caption
'       Accessor #2:
'          Name: set_Caption
'          Visibility: Public
'          Property Type: Setter
'          Setting the property value.
'       ----------
'       The Caption property: The Modified Caption

注解

调用 GetAccessors 方法：

获取表示 Type 类的对象。
Type从对象获取 PropertyInfo 对象。
PropertyInfo从对象调用 GetAccessors 方法。

适用于

GetAccessors(Boolean)

Source:: PropertyInfo.cs

Source:: PropertyInfo.cs

Source:: PropertyInfo.cs

返回一个数组，其元素反射了当前实例反射的属性的公共及非公共（如果指定）get 和 set 取值函数。

public:
 abstract cli::array <System::Reflection::MethodInfo ^> ^ GetAccessors(bool nonPublic);

public abstract System.Reflection.MethodInfo[] GetAccessors (bool nonPublic);

abstract member GetAccessors : bool -> System.Reflection.MethodInfo[]

Public MustOverride Function GetAccessors (nonPublic As Boolean) As MethodInfo()

参数

nonPublic: Boolean

指示是否应在返回的数组中返回非公共方法。如果要包括非公共方法，则为 true；否则为 false。

MethodInfo[]

一个数组，其元素反射了当前实例反射的属性的 get 和 set 取值函数。如果 nonPublic 为 true，则此数组包含公共及非公共 get 和 set 取值函数。如果 nonPublic 为 false，则此数组仅包含公共 get 和 set 取值函数。如果没有找到具有指定可见性的访问器，则此方法将返回包含零 (0) 个元素的数组。

实现

GetAccessors(Boolean)

示例

以下示例检索属性的访问 ClassWithProperty.Caption 器并显示有关它们的信息。它还调用 setter 的方法来设置属性值，并调用 Invoke getter 的方法来检索属性值。

using System;
using System.Reflection;

// Define a property.
public class ClassWithProperty
{
    private string _caption = "A Default caption";

    public string Caption
    {
        get { return _caption; }
        set { if(_caption != value) _caption = value; }
    }
}

class Example
{
    public static void Main()
    {
        ClassWithProperty test = new ClassWithProperty();
        Console.WriteLine("The Caption property: {0}", test.Caption);
        Console.WriteLine("----------");
        // Get the type and PropertyInfo.
        Type t = Type.GetType("ClassWithProperty");
        PropertyInfo propInfo = t.GetProperty("Caption");

        // Get the public GetAccessors method.
        MethodInfo[] methInfos = propInfo.GetAccessors(true);
        Console.WriteLine("There are {0} accessors.",
                          methInfos.Length);
        for(int ctr = 0; ctr < methInfos.Length; ctr++) {
           MethodInfo m = methInfos[ctr];
           Console.WriteLine("Accessor #{0}:", ctr + 1);
           Console.WriteLine("   Name: {0}", m.Name);
           Console.WriteLine("   Visibility: {0}", GetVisibility(m));
           Console.Write("   Property Type: ");
           // Determine if this is the property getter or setter.
           if (m.ReturnType == typeof(void)) {
              Console.WriteLine("Setter");
              Console.WriteLine("   Setting the property value.");
              //  Set the value of the property.
              m.Invoke(test, new object[] { "The Modified Caption" } );
           }
           else {
              Console.WriteLine("Getter");
              // Get the value of the property.
              Console.WriteLine("   Property Value: {0}",
                                m.Invoke(test, new object[] {} ));
           }
        }
        Console.WriteLine("----------");
        Console.WriteLine("The Caption property: {0}", test.Caption);
    }

    static string GetVisibility(MethodInfo m)
    {
       string visibility = "";
       if (m.IsPublic)
          return "Public";
       else if (m.IsPrivate)
          return "Private";
       else
          if (m.IsFamily)
             visibility = "Protected ";
          else if (m.IsAssembly)
             visibility += "Assembly";
       return visibility;
    }
}
// The example displays the following output:
//       The Caption property: A Default caption
//       ----------
//       There are 2 accessors.
//       Accessor #1:
//          Name: get_Caption
//          Visibility: Public
//          Property Type: Getter
//          Property Value: A Default caption
//       Accessor #2:
//          Name: set_Caption
//          Visibility: Public
//          Property Type: Setter
//          Setting the property value.
//       ----------
//       The Caption property: The Modified Caption

Imports System.Reflection

' Define a property.
Public Class ClassWithProperty
    Private _caption As String = "A Default caption"

    Public Property Caption As String
        Get
            Return _caption
        End Get
        Set
            If _caption <> value Then _caption = value
        End Set
    End Property
End Class

Module Example
    Public Sub Main()
        Dim test As New ClassWithProperty()
        Console.WriteLine("The Caption property: {0}", test.Caption)
        Console.WriteLine("----------")
        ' Get the type and PropertyInfo.
        Dim t As Type = Type.GetType("ClassWithProperty")
        Dim propInfo As PropertyInfo = t.GetProperty("Caption")

        ' Get all the accessors.
        Dim methInfos() As MethodInfo = propInfo.GetAccessors(True)
        Console.WriteLine("There are {0} accessors.",
                          methInfos.Length)
        For ctr As Integer = 0 To methInfos.Length - 1
           Dim m As MethodInfo = methInfos(ctr)
           Console.WriteLine("Accessor #{0}:", ctr + 1)
           Console.WriteLine("   Name: {0}", m.Name)
           Console.WriteLine("   Visibility: {0}", GetVisibility(m))
           Console.Write("   Property Type: ")
           ' Determine if this is the property getter or setter.
''           If (m.ReturnType == typeof(void))
           If m.ReturnType Is GetType(Void) Then
              Console.WriteLine("Setter")
              Console.WriteLine("   Setting the property value.")
              ' Set the value of the property.
              m.Invoke(test, { "The Modified Caption" } )
           Else
              Console.WriteLine("Getter")
              ' Get the value of the property.
              Console.WriteLine("   Property Value: {0}",
                                m.Invoke(test, {} ))
           End If
        Next
        Console.WriteLine("----------")
        Console.WriteLine("The Caption property: {0}", test.Caption)
    End Sub
    
    Private Function GetVisibility(m As MethodInfo) As String
       Dim visibility As String = ""
       If m.IsPublic Then
          Return "Public"
       ElseIf m.IsPrivate Then
          Return "Private"
       Else
          If m.IsFamily Then
             visibility = "Protected "
          ElseIf m.IsAssembly Then
             visibility += "Assembly"
          End If
       End If
       Return visibility
    End Function
End Module
' The example displays the following output:
'       The Caption property: A Default caption
'       ----------
'       There are 2 accessors.
'       Accessor #1:
'          Name: get_Caption
'          Visibility: Public
'          Property Type: Getter
'          Property Value: A Default caption
'       Accessor #2:
'          Name: set_Caption
'          Visibility: Public
'          Property Type: Setter
'          Setting the property value.
'       ----------
'       The Caption property: The Modified Caption

注解

调用 GetAccessors 方法：

获取表示 Type 类的对象。
Type从对象获取 PropertyInfo 对象。
PropertyInfo从对象调用 GetAccessors 方法。

适用于

PropertyInfo.GetAccessors 方法

定义

重载

GetAccessors()

返回

实现

示例

注解

适用于

GetAccessors(Boolean)

参数

返回

实现

示例

注解

适用于

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