FieldInfo 类 (System.Reflection) | Microsoft Learn

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public ref class FieldInfo abstract : System::Reflection::MemberInfo

public ref class FieldInfo abstract : System::Reflection::MemberInfo, System::Runtime::InteropServices::_FieldInfo

public abstract class FieldInfo : System.Reflection.MemberInfo

[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Serializable]
public abstract class FieldInfo : System.Reflection.MemberInfo, System.Runtime.InteropServices._FieldInfo

[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class FieldInfo : System.Reflection.MemberInfo, System.Runtime.InteropServices._FieldInfo

[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class FieldInfo : System.Reflection.MemberInfo

type FieldInfo = class
    inherit MemberInfo

[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
[<System.Serializable>]
type FieldInfo = class
    inherit MemberInfo
    interface _FieldInfo

[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type FieldInfo = class
    inherit MemberInfo
    interface _FieldInfo

[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type FieldInfo = class
    inherit MemberInfo

Public MustInherit Class FieldInfo
Inherits MemberInfo

Public MustInherit Class FieldInfo
Inherits MemberInfo
Implements _FieldInfo

Object

MemberInfo

FieldInfo


   using namespace System;
using namespace System::Reflection;
public ref class FieldInfoClass
public:
   int myField1;
protected:
   String^ myField2;
int main()
   array<FieldInfo^>^myFieldInfo;
   Type^ myType = FieldInfoClass::typeid;
   // Get the type and fields of FieldInfoClass.
   myFieldInfo = myType->GetFields( static_cast<BindingFlags>(BindingFlags::NonPublic | BindingFlags::Instance | BindingFlags::Public) );
   Console::WriteLine( "\nThe fields of FieldInfoClass are \n" );
   // Display the field information of FieldInfoClass.
   for ( int i = 0; i < myFieldInfo->Length; i++ )
      Console::WriteLine( "\nName            : {0}", myFieldInfo[ i ]->Name );
      Console::WriteLine( "Declaring Type  : {0}", myFieldInfo[ i ]->DeclaringType );
      Console::WriteLine( "IsPublic        : {0}", myFieldInfo[ i ]->IsPublic );
      Console::WriteLine( "MemberType      : {0}", myFieldInfo[ i ]->MemberType );
      Console::WriteLine( "FieldType       : {0}", myFieldInfo[ i ]->FieldType );
      Console::WriteLine( "IsFamily        : {0}", myFieldInfo[ i ]->IsFamily );
   
    using System;
using System.Reflection;
public class FieldInfoClass
    public int myField1 = 0;
    protected string myField2 = null;
    public static void Main()
        FieldInfo[] myFieldInfo;
        Type myType = typeof(FieldInfoClass);
        // Get the type and fields of FieldInfoClass.
        myFieldInfo = myType.GetFields(BindingFlags.NonPublic | BindingFlags.Instance
            | BindingFlags.Public);
        Console.WriteLine("\nThe fields of " +
            "FieldInfoClass are \n");
        // Display the field information of FieldInfoClass.
        for(int i = 0; i < myFieldInfo.Length; i++)
            Console.WriteLine("\nName            : {0}", myFieldInfo[i].Name);
            Console.WriteLine("Declaring Type  : {0}", myFieldInfo[i].DeclaringType);
            Console.WriteLine("IsPublic        : {0}", myFieldInfo[i].IsPublic);
            Console.WriteLine("MemberType      : {0}", myFieldInfo[i].MemberType);
            Console.WriteLine("FieldType       : {0}", myFieldInfo[i].FieldType);
            Console.WriteLine("IsFamily        : {0}", myFieldInfo[i].IsFamily);
    
     Imports System.Reflection
Public Class FieldInfoClass
    Public myField1 As Integer = 0
    Protected myField2 As String = Nothing
    Public Shared Sub Main()
        Dim myFieldInfo() As FieldInfo
        Dim myType As Type = GetType(FieldInfoClass)
        ' Get the type and fields of FieldInfoClass.
        myFieldInfo = myType.GetFields(BindingFlags.NonPublic Or _
                      BindingFlags.Instance Or BindingFlags.Public)
        Console.WriteLine(ControlChars.NewLine & "The fields of " & _
                      "FieldInfoClass class are " & ControlChars.NewLine)
        ' Display the field information of FieldInfoClass.
        Dim i As Integer
        For i = 0 To myFieldInfo.Length - 1
            Console.WriteLine(ControlChars.NewLine + "Name            : {0}", myFieldInfo(i).Name)
            Console.WriteLine("Declaring Type  : {0}", myFieldInfo(i).DeclaringType)
            Console.WriteLine("IsPublic        : {0}", myFieldInfo(i).IsPublic)
            Console.WriteLine("MemberType      : {0}", myFieldInfo(i).MemberType)
            Console.WriteLine("FieldType       : {0}", myFieldInfo(i).FieldType)
            Console.WriteLine("IsFamily        : {0}", myFieldInfo(i).IsFamily)
        Next i
    End Sub
End Class
     
      字段信息是从元数据获取的。 类
      
       FieldInfo
      
      没有公共构造函数。
      
       FieldInfo
      
      对象是通过调用
      
       GetFields
      
      对象的 或
      
       GetField
      
      方法获取的
      
       Type
      
      。
     
     
      字段是在 类中定义的变量。
      
       FieldInfo
      
      提供对类中字段元数据的访问，并为字段提供动态集和获取功能。 在对象上调用 invoke 或 get 之前，类不会加载到内存中。
     
     
      实施者说明
     
     
      当从
      
       FieldInfo
      
      继承时，必须重写下面的成员：
      
       GetValue(Object)
      
      和
      
       SetValue(Object, Object, BindingFlags, Binder, CultureInfo)
      
      。