自訂屬性不是通用類型系統的一部分。
如果目前 Type 代表建構的泛型型別，這個方法會傳回 PropertyInfo 物件，其類型參數會由適當的型別自變數取代。
如果目前的 Type 代表泛型型別或泛型方法定義中的型別參數，這個方法會搜尋類別條件約束的屬性。
public:
abstract cli::array <System::Reflection::PropertyInfo ^> ^ GetProperties(System::Reflection::BindingFlags bindingAttr);
public abstract System.Reflection.PropertyInfo[] GetProperties (System.Reflection.BindingFlags bindingAttr);
abstract member GetProperties : System.Reflection.BindingFlags -> System.Reflection.PropertyInfo[]
Public MustOverride Function GetProperties (bindingAttr As BindingFlags) As PropertyInfo()
下列範例會定義名為 PropertyClass 的類別，其中包含六個屬性：兩個是 public、一個是私用、一個是受保護、一個是 Visual Basic) 中的內部 (Friend ，另一個是 Visual Basic) 中的內部 (Protected Friend 。 然後，它會在屬性名稱和類型 (顯示一些基本屬性資訊，無論是讀取/寫入，以及其 get 和 set 存取子的可見性) 符合指定系結條件約束的屬性。
using namespace System;
using namespace System::Reflection;
// Create a class having three properties.
public ref class PropertyClass
public:
property String^ Property1
String^ get()
return "hello";
property String^ Property2
String^ get()
return "hello";
protected:
property String^ Property3
String^ get()
return "hello";
private:
property int Property4
int get()
return 32;
internal:
property String^ Property5
String^ get()
return "value";
public protected:
property String^ Property6
String^ get()
return "value";
String^ GetVisibility(MethodInfo^ accessor)
if (accessor->IsPublic)
return "Public";
else if (accessor->IsPrivate)
return "Private";
else if (accessor->IsFamily)
return "Protected";
else if (accessor->IsAssembly)
return "Internal/Friend";
return "Protected Internal/Friend";
void DisplayPropertyInfo(array<PropertyInfo^>^ propInfos )
// Display information for all properties.
for each(PropertyInfo^ propInfo in propInfos) {
bool readable = propInfo->CanRead;
bool writable = propInfo->CanWrite;
Console::WriteLine(" Property name: {0}", propInfo->Name);
Console::WriteLine(" Property type: {0}", propInfo->PropertyType);
Console::WriteLine(" Read-Write: {0}", readable && writable);
if (readable) {
MethodInfo^ getAccessor = propInfo->GetMethod;
Console::WriteLine(" Visibility: {0}",
GetVisibility(getAccessor));
if (writable) {
MethodInfo^ setAccessor = propInfo->SetMethod;
Console::WriteLine(" Visibility: {0}",
GetVisibility(setAccessor));
Console::WriteLine();
void main()
Type^ myType = PropertyClass::typeid;
// Get the public properties.
array<PropertyInfo^>^propInfos = myType->GetProperties( static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance) );
Console::WriteLine("The number of public properties: {0}.\n",
propInfos->Length);
// Display the public properties.
DisplayPropertyInfo( propInfos );
// Get the non-public properties.
array<PropertyInfo^>^propInfos1 = myType->GetProperties( static_cast<BindingFlags>(BindingFlags::NonPublic | BindingFlags::Instance) );
Console::WriteLine("The number of non-public properties: {0}.\n",
propInfos1->Length);
// Display all the non-public properties.
DisplayPropertyInfo(propInfos1);
// The example displays the following output:
// The number of public properties: 2.
// Property name: Property2
// Property type: System.String
// Read-Write: False
// Visibility: Public
// Property name: Property1
// Property type: System.String
// Read-Write: False
// Visibility: Public
// The number of non-public properties: 4.
// Property name: Property6
// Property type: System.String
// Read-Write: False
// Visibility: Protected Internal/Friend
// Property name: Property5
// Property type: System.String
// Read-Write: False
// Visibility: Internal/Friend
// Property name: Property4
// Property type: System.Int32
// Read-Write: False
// Visibility: Private
// Property name: Property3
// Property type: System.String
// Read-Write: False
// Visibility: Protected
using System;
using System.Reflection;
// Create a class having six properties.
public class PropertyClass
public String Property1
get { return "hello"; }
public String Property2
get { return "hello"; }
protected String Property3
get { return "hello"; }
private Int32 Property4
get { return 32; }
internal String Property5
get { return "value"; }
protected internal String Property6
get { return "value"; }
public class Example
public static void Main()
Type t = typeof(PropertyClass);
// Get the public properties.
PropertyInfo[] propInfos = t.GetProperties(BindingFlags.Public|BindingFlags.Instance);
Console.WriteLine("The number of public properties: {0}.\n",
propInfos.Length);
// Display the public properties.
DisplayPropertyInfo(propInfos);
// Get the nonpublic properties.
PropertyInfo[] propInfos1 = t.GetProperties(BindingFlags.NonPublic|BindingFlags.Instance);
Console.WriteLine("The number of non-public properties: {0}.\n",
propInfos1.Length);
// Display all the nonpublic properties.
DisplayPropertyInfo(propInfos1);
public static void DisplayPropertyInfo(PropertyInfo[] propInfos)
// Display information for all properties.
foreach (var propInfo in propInfos) {
bool readable = propInfo.CanRead;
bool writable = propInfo.CanWrite;
Console.WriteLine(" Property name: {0}", propInfo.Name);
Console.WriteLine(" Property type: {0}", propInfo.PropertyType);
Console.WriteLine(" Read-Write: {0}", readable & writable);
if (readable) {
MethodInfo getAccessor = propInfo.GetMethod;
Console.WriteLine(" Visibility: {0}",
GetVisibility(getAccessor));
if (writable) {
MethodInfo setAccessor = propInfo.SetMethod;
Console.WriteLine(" Visibility: {0}",
GetVisibility(setAccessor));
Console.WriteLine();
public static String GetVisibility(MethodInfo accessor)
if (accessor.IsPublic)
return "Public";
else if (accessor.IsPrivate)
return "Private";
else if (accessor.IsFamily)
return "Protected";
else if (accessor.IsAssembly)
return "Internal/Friend";
return "Protected Internal/Friend";
// The example displays the following output:
// The number of public properties: 2.
// Property name: Property1
// Property type: System.String
// Read-Write: False
// Visibility: Public
// Property name: Property2
// Property type: System.String
// Read-Write: False
// Visibility: Public
// The number of non-public properties: 4.
// Property name: Property3
// Property type: System.String
// Read-Write: False
// Visibility: Protected
// Property name: Property4
// Property type: System.Int32
// Read-Write: False
// Visibility: Private
// Property name: Property5
// Property type: System.String
// Read-Write: False
// Visibility: Internal/Friend
// Property name: Property6
// Property type: System.String
// Read-Write: False
// Visibility: Protected Internal/Friend
open System.Reflection
// Create a class having four properties.
type PropertyClass() =
member _.Property1 =
"hello"
member _.Property2 =
"hello"
member private _.Property3 =
member internal _.Property4 =
"value"
let getVisibility (accessor: MethodInfo) =
if accessor.IsPublic then
"Public"
elif accessor.IsPrivate then
"Private"
elif accessor.IsFamily then
"Protected"
elif accessor.IsAssembly then
"Internal/Friend"
"Protected Internal/Friend"
let displayPropertyInfo (propInfos: #seq<PropertyInfo>) =
// Display information for all properties.
for propInfo in propInfos do
let readable = propInfo.CanRead
let writable = propInfo.CanWrite
printfn $" Property name: {propInfo.Name}"
printfn $" Property type: {propInfo.PropertyType}"
printfn $" Read-Write: {readable && writable}"
if readable then
let getAccessor = propInfo.GetMethod
printfn $" Visibility: {getVisibility getAccessor}"
if writable then
let setAccessor = propInfo.SetMethod
printfn $" Visibility: {getVisibility setAccessor}"
printfn ""
let t = typeof<PropertyClass>
// Get the public properties.
let propInfos = t.GetProperties(BindingFlags.Public ||| BindingFlags.Instance)
printfn $"The number of public properties: {propInfos.Length}.\n"
// Display the public properties.
displayPropertyInfo propInfos
// Get the nonpublic properties.
let propInfos1 = t.GetProperties(BindingFlags.NonPublic ||| BindingFlags.Instance)
printfn $"The number of non-public properties: {propInfos1.Length}.\n"
// Display all the nonpublic properties.
displayPropertyInfo propInfos1
// The example displays the following output:
// The number of public properties: 2.
// Property name: Property1
// Property type: System.String
// Read-Write: False
// Visibility: Public
// Property name: Property2
// Property type: System.String
// Read-Write: False
// Visibility: Public
// The number of non-public properties: 2.
// Property name: Property3
// Property type: System.Int32
// Read-Write: False
// Visibility: Private
// Property name: Property4
// Property type: System.String
// Read-Write: False
// Visibility: Internal/Friend
Imports System.Reflection
' Create a class having six properties.
Public Class PropertyClass
Public ReadOnly Property Property1() As String
Return "hello"
End Get
End Property
Public ReadOnly Property Property2() As String
Return "hello"
End Get
End Property
Protected ReadOnly Property Property3() As String
Return "hello"
End Get
End Property
Private ReadOnly Property Property4 As Integer
Return 32
End Get
End Property
Friend ReadOnly Property Property5 As String
Return "value"
End Get
End Property
Protected Friend ReadOnly Property Property6 As String
Return "value"
End Get
End Property
End Class
Public Module Example
Public Sub Main()
Dim t As Type = GetType(PropertyClass)
' Get the public properties.
Dim propInfos As PropertyInfo() = t.GetProperties(BindingFlags.Public Or BindingFlags.Instance)
Console.WriteLine("The number of public properties: {0}",
propInfos.Length)
Console.WriteLine()
' Display the public properties.
DisplayPropertyInfo(propInfos)
' Get the non-public properties.
Dim propInfos1 As PropertyInfo() = t.GetProperties(BindingFlags.NonPublic Or BindingFlags.Instance)
Console.WriteLine("The number of non-public properties: {0}",
propInfos1.Length)
Console.WriteLine()
' Display all the non-public properties.
DisplayPropertyInfo(propInfos1)
End Sub
Public Sub DisplayPropertyInfo(ByVal propInfos() As PropertyInfo)
' Display information for all properties.
For Each propInfo In propInfos
Dim readable As Boolean = propInfo.CanRead
Dim writable As Boolean = propInfo.CanWrite
Console.WriteLine(" Property name: {0}", propInfo.Name)
Console.WriteLine(" Property type: {0}", propInfo.PropertyType)
Console.WriteLine(" Read-Write: {0}", readable And writable)
If readable Then
Dim getAccessor As MethodInfo = propInfo.GetMethod
Console.WriteLine(" Visibility: {0}",
GetVisibility(getAccessor))
End If
If writable Then
Dim setAccessor As MethodInfo = propInfo.SetMethod
Console.WriteLine(" Visibility: {0}",
GetVisibility(setAccessor))
End If
Console.WriteLine()
End Sub
Public Function GetVisibility(accessor As MethodInfo) As String
If accessor.IsPublic Then
Return "Public"
ElseIf accessor.IsPrivate Then
Return "Private"
Else If accessor.IsFamily Then
Return "Protected"
Else If accessor.IsAssembly Then
Return "Internal/Friend"
Return "Protected Internal/Friend"
End If
End Function
End Module
' The example displays the following output:
' The number of public properties: 2
' Property name: Property1
' Property type: System.String
' Read-Write: False
' Visibility: Public
' Property name: Property2
' Property type: System.String
' Read-Write: False
' Visibility: Public
' The number of non-public properties: 4
' Property name: Property3
' Property type: System.String
' Read-Write: False
' Visibility: Protected
' Property name: Property4
' Property type: System.Int32
' Read-Write: False
' Visibility: Private
' Property name: Property5
' Property type: System.String
' Read-Write: False
' Visibility: Internal/Friend
' Property name: Property6
' Property type: System.String
' Read-Write: False
' Visibility: Protected Internal/Friend
GetProperties(BindingFlags)若要讓多載成功擷取屬性資訊，自bindingAttr變數必須包含至少一個 BindingFlags.Instance 和 BindingFlags.Static，以及至少一個 BindingFlags.NonPublic 和 BindingFlags.Public。
下列 BindingFlags 篩選旗標可用來定義要包含在搜尋中的屬性：
指定 BindingFlags.Instance 以包含實例方法。
指定 BindingFlags.Static 以包含靜態方法。
指定 BindingFlags.Public 以在搜尋中包含公用屬性。 如果屬性至少有一個存取子是公用的，則屬性會被視為公用。
指定 BindingFlags.NonPublic 在搜尋中包含非公用屬性 (，也就是私人、內部和受保護的屬性) 。 只會傳回基類的受保護和內部屬性;不會傳回基類上的私用屬性。
指定要 BindingFlags.FlattenHierarchy 在階層中加入 public 和 protected 靜態成員; private 繼承類別中的靜態成員不包含在內。
單獨指定 BindingFlags.Default 以傳回空 PropertyInfo 陣列。
下列 BindingFlags 修飾詞旗標可用來變更搜尋的運作方式：
BindingFlags.DeclaredOnly 只搜尋 在上 Type宣告的屬性，而不是只繼承的屬性。
如需相關資訊，請參閱 System.Reflection.BindingFlags 。
在 .NET 6 和舊版中 GetProperties ，方法不會以特定順序傳回屬性，例如字母順序或宣告順序。 您的程式代碼不得依存於傳回屬性的順序，因為該順序會有所不同。 不過，從 .NET 7 開始，排序會根據元件中的元數據排序來確定。
如果目前 Type 代表建構的泛型型別，這個方法會傳回 PropertyInfo 物件，其類型參數會由適當的型別自變數取代。
如果目前的 Type 代表泛型型別或泛型方法定義中的型別參數，這個方法會搜尋類別條件約束的屬性。
