PropertyInfo.GetAccessors Methode
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Retourneert een matrix van de get en set accessors op deze eigenschap.
Overloads
| Name | Description |
|---|---|
| GetAccessors() |
Retourneert een matrix waarvan de elementen het openbare |
| GetAccessors(Boolean) |
Retourneert een matrix waarvan de elementen het publiek weerspiegelen en, indien opgegeven, niet-openbare |
GetAccessors()
Retourneert een matrix waarvan de elementen het openbare get element en set de toegangsrechten van de eigenschap weerspiegelen die door het huidige exemplaar worden weerspiegeld.
public:
virtual cli::array <System::Reflection::MethodInfo ^> ^ GetAccessors();public:
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[]member this.GetAccessors : unit -> System.Reflection.MethodInfo[]Public Function GetAccessors () As MethodInfo()Retouren
Een matrix met MethodInfo objecten die de openbare get en set accessors van de eigenschap weerspiegelen die worden weerspiegeld door het huidige exemplaar, indien gevonden; anders retourneert deze methode een matrix met nul (0) elementen.
Implementeringen
Voorbeelden
In het volgende voorbeeld worden de openbare toegangsrechten van de ClassWithProperty.Caption eigenschap opgehaald en worden er informatie over weergegeven. Ook wordt de Invoke methode van de setter aangeroepen om de eigenschapswaarde en de getter in te stellen om de eigenschapswaarde op te halen.
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
Opmerkingen
De methode aanroepen GetAccessors :
1.Haal een Type object op dat de klasse vertegenwoordigt. 2.Van het Type object haalt u het PropertyInfo object op. 3.Vanuit het PropertyInfo object roept u de GetAccessors methode aan.
Van toepassing op
GetAccessors(Boolean)
Retourneert een matrix waarvan de elementen het publiek weerspiegelen en, indien opgegeven, niet-openbare get en set accessors van de eigenschap die door het huidige exemplaar worden weerspiegeld.
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()Parameters
- nonPublic
- Boolean
Geeft aan of niet-openbare methoden moeten worden geretourneerd in de geretourneerde matrix.
true indien niet-openbare methoden moeten worden opgenomen; anders, false.
Retouren
Een matrix waarvan de elementen de get en set accessors van de eigenschap weerspiegelen die door het huidige exemplaar worden weerspiegeld. Als nonPublic dat het is true, bevat deze matrix openbare en niet-openbare get en set accessors. Als nonPublic dat het is false, bevat deze matrix alleen openbare get en set accessors. Als er geen accessors met de opgegeven zichtbaarheid worden gevonden, retourneert deze methode een matrix met nul (0) elementen.
Implementeringen
Voorbeelden
In het volgende voorbeeld worden de toegangsrechten van de ClassWithProperty.Caption eigenschap opgehaald en worden er informatie over weergegeven. Ook wordt de Invoke methode van de setter aangeroepen om de eigenschapswaarde en de getter in te stellen om de eigenschapswaarde op te halen.
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
Opmerkingen
De methode aanroepen GetAccessors :
- Haal een Type object op dat de klasse vertegenwoordigt.
- Haal het object op uit het TypePropertyInfo object.
- Roep vanuit het PropertyInfo object de GetAccessors methode aan.