PropertyInfo.GetAccessors Método

Definição

Retorna uma matriz dos acessadores get e set nesta propriedade.Returns an array of the get and set accessors on this property.

Sobrecargas

GetAccessors()

Retorna uma matriz cujos elementos refletem os acessadores get e set públicos da propriedade refletida pela instância atual.Returns an array whose elements reflect the public get and set accessors of the property reflected by the current instance.

GetAccessors(Boolean)

Retorna uma matriz cujos elementos refletem o público e, se especificado, acessadores set e get não públicos da propriedade refletida pela instância atual.Returns an array whose elements reflect the public and, if specified, non-public get and set accessors of the property reflected by the current instance.

GetAccessors()

Retorna uma matriz cujos elementos refletem os acessadores get e set públicos da propriedade refletida pela instância atual.Returns an array whose elements reflect the public get and set accessors of the property reflected by the current instance.

public:
 virtual cli::array <System::Reflection::MethodInfo ^> ^ GetAccessors();
public System.Reflection.MethodInfo[] GetAccessors ();
abstract member GetAccessors : unit -> System.Reflection.MethodInfo[]
override this.GetAccessors : unit -> System.Reflection.MethodInfo[]
Public Function GetAccessors () As MethodInfo()

Retornos

Uma matriz de objetos MethodInfo que refletem os acessadores get e set públicos da propriedade refletida pela instância atual, se encontrada, caso contrário, esse método retorna uma matriz com zero (0) elementos.An array of MethodInfo objects that reflect the public get and set accessors of the property reflected by the current instance, if found; otherwise, this method returns an array with zero (0) elements.

Implementações

Exemplos

O exemplo a seguir recupera os acessadores públicos ClassWithProperty.Caption da propriedade e exibe informações sobre eles.The following example retrieves the public accessors of the ClassWithProperty.Caption property and displays information about them. Ele também chama o Invoke método do setter para definir o valor da propriedade e do getter para recuperar o valor da propriedade.It also calls the Invoke method of the setter to set the property value and of the getter to retrieve the property value.

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

Comentários

Para chamar o GetAccessors método:To call the GetAccessors method:

  1. Obtenha um Type objeto que representa a classe.Get a Type object that represents the class.

  2. No objeto, obtenha o PropertyInfo objeto. TypeFrom the Type object, get the PropertyInfo object.

  3. No objeto, chame o GetAccessors método. PropertyInfoFrom the PropertyInfo object, call the GetAccessors method.

Segurança

ReflectionPermission
quando invocado com associação tardia por meio de mecanismos como InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[]).when invoked late-bound through mechanisms such as InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[]). Enumeração associada: MemberAccess.Associated enumeration: MemberAccess.

GetAccessors(Boolean)

Retorna uma matriz cujos elementos refletem o público e, se especificado, acessadores set e get não públicos da propriedade refletida pela instância atual.Returns an array whose elements reflect the public and, if specified, non-public get and set accessors of the property reflected by the current instance.

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()

Parâmetros

nonPublic
Boolean

Indica se os métodos não públicos devem ser retornados na matriz retornada.Indicates whether non-public methods should be returned in the returned array. true se os métodos não públicos devem ser incluídos; caso contrário, false.true if non-public methods are to be included; otherwise, false.

Retornos

Uma matriz cujos elementos refletem os acessadores get e set da propriedade refletida pela instância atual.An array whose elements reflect the get and set accessors of the property reflected by the current instance. Se nonPublic for true, essa matriz conterá acessadores get e set públicos e não públicos.If nonPublic is true, this array contains public and non-public get and set accessors. Se nonPublic for false, essa matriz conterá apenas acessadores get e set públicos.If nonPublic is false, this array contains only public get and set accessors. Se nenhum acessador com a visibilidade especificada for encontrado, esse método retornará uma matriz com zero (0) elemento.If no accessors with the specified visibility are found, this method returns an array with zero (0) elements.

Implementações

Exemplos

O exemplo a seguir recupera os acessadores ClassWithProperty.Caption da propriedade e exibe informações sobre eles.The following example retrieves the accessors of the ClassWithProperty.Caption property and displays information about them. Ele também chama o Invoke método do setter para definir o valor da propriedade e do getter para recuperar o valor da propriedade.It also calls the Invoke method of the setter to set the property value and of the getter to retrieve the property value.

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

Comentários

Para chamar o GetAccessors método:To call the GetAccessors method:

  1. Obtenha um Type objeto que representa a classe.Get a Type object that represents the class.

  2. No objeto, obtenha o PropertyInfo objeto. TypeFrom the Type object, get the PropertyInfo object.

  3. No objeto, chame o GetAccessors método. PropertyInfoFrom the PropertyInfo object, call the GetAccessors method.

Segurança

ReflectionPermission
quando invocado com associação tardia por meio de mecanismos como InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[]).when invoked late-bound through mechanisms such as InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[]). Enumeração associada: MemberAccess.Associated enumeration: MemberAccess.

Aplica-se a