Type.StructLayoutAttribute Egenskap

public:
 virtual property System::Runtime::InteropServices::StructLayoutAttribute ^ StructLayoutAttribute { System::Runtime::InteropServices::StructLayoutAttribute ^ get(); };

public virtual System.Runtime.InteropServices.StructLayoutAttribute? StructLayoutAttribute { get; }

public virtual System.Runtime.InteropServices.StructLayoutAttribute StructLayoutAttribute { get; }

member this.StructLayoutAttribute : System.Runtime.InteropServices.StructLayoutAttribute

Public Overridable ReadOnly Property StructLayoutAttribute As StructLayoutAttribute

Egenskapsvärde

Hämtar en StructLayoutAttribute som beskriver bruttolayoutfunktionerna för den aktuella typen.

Undantag

Exempel

I följande kodexempel definieras först en klass, en struktur och en struktur med särskilda layoutattribut (strukturerna är kapslade i klassen). Exemplet använder StructLayoutAttribute sedan egenskapen för att hämta en StructLayoutAttribute för varje typ och visar egenskaperna för attributen.

using System;
using System.Runtime.InteropServices;

public class Example
{
    public static void Main()
    {
        DisplayLayoutAttribute(typeof(Example).StructLayoutAttribute);
        DisplayLayoutAttribute(typeof(Test1).StructLayoutAttribute);
        DisplayLayoutAttribute(typeof(Test2).StructLayoutAttribute);
    }

    private static void DisplayLayoutAttribute(StructLayoutAttribute sla)
    {
        Console.WriteLine("\r\nCharSet: "+sla.CharSet.ToString()+"\r\n   Pack: "+sla.Pack.ToString()+"\r\n   Size: "+sla.Size.ToString()+"\r\n  Value: "+sla.Value.ToString());
    }
    public struct Test1
    {
        public byte B1;
        public short S;
        public byte B2;
    }
    [StructLayout(LayoutKind.Explicit, Pack=1)] public struct Test2
    {
        [FieldOffset(0)] public byte B1;
        [FieldOffset(1)] public short S;
        [FieldOffset(3)] public byte B2;
    }
}

open System.Runtime.InteropServices

type Example = class end

[<Struct>]
type Test1 = 
    val B1 : byte
    val S : int16
    val B2 : byte

[<Struct; StructLayout(LayoutKind.Explicit, Pack=1)>] 
type Test2 =
    [<FieldOffset 0>] val B1 : byte
    [<FieldOffset 1>] val S : int16
    [<FieldOffset 3>] val B2 : byte

let displayLayoutAttribute (sla: StructLayoutAttribute) =
    printfn $"\nCharSet: {sla}\n   Pack: {sla.Pack}\n   Size: {sla.Size}\n  Value: {sla.Value}"
displayLayoutAttribute typeof<Example>.StructLayoutAttribute
displayLayoutAttribute typeof<Test1>.StructLayoutAttribute
displayLayoutAttribute typeof<Test2>.StructLayoutAttribute

Imports System.Runtime.InteropServices

Public Class Example
    Public Shared Sub Main()
        DisplayLayoutAttribute(GetType(Example).StructLayoutAttribute)
        DisplayLayoutAttribute(GetType(Test1).StructLayoutAttribute)
        DisplayLayoutAttribute(GetType(Test2).StructLayoutAttribute)
    End Sub

    Private Shared Sub DisplayLayoutAttribute( _
        ByVal sla As StructLayoutAttribute)
        Console.WriteLine(vbCrLf & "CharSet: " & sla.CharSet.ToString() _
            & vbCrLf & "   Pack: " & sla.Pack.ToString() _
            & vbCrLf & "   Size: " & sla.Size.ToString() _
            & vbCrLf & "  Value: " & sla.Value.ToString())
    End Sub

    Public Structure Test1
        Public B1 As Byte
        Public S As Short
        Public B2 As Byte
    End Structure

    <StructLayout(LayoutKind.Explicit, Pack:=1)> _
    Public Structure Test2
        <FieldOffset(0)> Public B1 As Byte
        <FieldOffset(1)> Public S As Short
        <FieldOffset(3)> Public B2 As Byte
    End Structure
End Class

Kommentarer

StructLayoutAttribute returneras inte av GetCustomAttributes metoden. Använd i stället den här egenskapen för att hämta den.

Se även

• StructLayoutAttribute