Compartir a través de

FieldInfo.IsStatic Propiedad

Definición

Espacio de nombres:
System.Reflection
Ensamblados:
mscorlib.dll, System.Reflection.dll
Ensamblados:
netstandard.dll, System.Runtime.dll
Ensamblado:
System.Reflection.dll
Ensamblado:
System.Runtime.dll
Ensamblado:
mscorlib.dll
Ensamblado:
netstandard.dll
Source:
FieldInfo.cs
Source:
FieldInfo.cs
Source:
FieldInfo.cs
Source:
FieldInfo.cs

Obtiene un valor que indica si el campo es estático.

public:
 property bool IsStatic { bool get(); };
public bool IsStatic { get; }
member this.IsStatic : bool
Public ReadOnly Property IsStatic As Boolean

Valor de propiedad

Boolean

true si este campo es estático; en caso contrario, false.

Implementaciones

IsStatic

Ejemplos

En el ejemplo siguiente se determina si el campo especificado es estático y muestra el resultado.

using System;
using System.Reflection;

 // Make two fields.
public class Myfielda
{
    private string field = "A private field";
    public string Field
    {
        get{return field;}
        set{if(field!=value){field=value;}}
    }
}
public class Myfieldb
{
    static string field = "B private static field";
    public string Field
    {
        get{return field;}
        set{if(field!=value){field=value;}}
    }
}

public class Myfieldinfo
{
    public static int Main()
    {
        Console.WriteLine("\nReflection.FieldInfo");
        Myfielda Myfielda = new Myfielda();
        Myfieldb Myfieldb = new Myfieldb();

        // Get the Type and FieldInfo.
        Type MyTypea = typeof(Myfielda);
        FieldInfo Myfieldinfoa = MyTypea.GetField("field", BindingFlags.NonPublic|BindingFlags.Instance);
        Type MyTypeb = typeof(Myfieldb);
        FieldInfo Myfieldinfob = MyTypeb.GetField("field", BindingFlags.NonPublic|BindingFlags.Static);

        // For the first field, get and display the name, field, and IsStatic property value.
        Console.Write("\n{0} - ", MyTypea.FullName);
        Console.Write("{0}; ", Myfieldinfoa.GetValue(Myfielda));
        Console.Write("IsStatic - {0}", Myfieldinfoa.IsStatic);

        // For the second field get and display the name, field, and IsStatic property value.
        Console.Write("\n{0} - ", MyTypeb.FullName);
        Console.Write("{0}; ", Myfieldinfob.GetValue(Myfieldb));
        Console.Write("IsStatic - {0}", Myfieldinfob.IsStatic);

        return 0;
    }
}

Imports System.Reflection

' Make two fields.
Public Class Myfielda
    Private m_field As String = "A private field"

    Public Property Field() As String
        Get
            Return m_field
        End Get
        Set(ByVal Value As String)
            If m_field <> value Then
                m_field = value
            End If
        End Set
    End Property
End Class

Public Class Myfieldb
    Private Shared m_field As String = "B private static field"

    Public Property Field() As String
        Get
            Return m_field
        End Get
        Set(ByVal Value As String)
            If m_field <> value Then
                m_field = value
            End If
        End Set
    End Property
End Class

Public Class Myfieldinfo

    Public Shared Sub Main()
        Console.WriteLine()
        Console.WriteLine("Reflection.FieldInfo")
        Console.WriteLine()
        Dim Myfielda As New Myfielda()
        Dim Myfieldb As New Myfieldb()

        ' Get the Type and FieldInfo.
        Dim MyTypea As Type = GetType(Myfielda)
        Dim Myfieldinfoa As FieldInfo = _
           MyTypea.GetField("m_field", BindingFlags.NonPublic Or BindingFlags.Instance)
        Dim MyTypeb As Type = GetType(Myfieldb)
        Dim Myfieldinfob As FieldInfo = _
           MyTypeb.GetField("m_field", BindingFlags.NonPublic Or BindingFlags.Static)

        ' For the first field, get and display the name, field, and IsStatic property value.
        Console.WriteLine("{0} - {1}; IsStatic - {2}", MyTypea.FullName, Myfieldinfoa.GetValue(Myfielda), Myfieldinfoa.IsStatic)

        ' For the second field, get and display the name, field, and IsStatic property value.
        Console.WriteLine("{0} - {1}; IsStatic - {2}", MyTypeb.FullName, Myfieldinfob.GetValue(Myfieldb), Myfieldinfob.IsStatic)

    End Sub
End Class

Este código genera el siguiente resultado:

Reflection.FieldInfo

Myfielda - A private field; IsStatic - False

Myfieldb - B static field; IsStatic - True

Comentarios

Cuando un campo es estático, todas las instancias del tipo comparten una copia del campo.

La IsStatic propiedad se establece cuando se establece el FieldAttributes.Static atributo .

Para obtener la IsStatic propiedad , obtenga primero la clase Type. TypeEn , obtenga .FieldInfo En , FieldInfoobtenga la IsStatic propiedad . Para acceder a un campo no público, establezca en BindingFlagsNonPublic en en el GetField método y establezca la accesibilidad en Instance o Static.

Se aplica a

Consulte también