Type.StructLayoutAttribute Type.StructLayoutAttribute Type.StructLayoutAttribute Type.StructLayoutAttribute Property

定義

取得描述目前類型配置的 StructLayoutAttributeGets a StructLayoutAttribute that describes the layout of the current type.

public:
 virtual property System::Runtime::InteropServices::StructLayoutAttribute ^ StructLayoutAttribute { System::Runtime::InteropServices::StructLayoutAttribute ^ get(); };
public virtual System.Runtime.InteropServices.StructLayoutAttribute StructLayoutAttribute { get; }
member this.StructLayoutAttribute : System.Runtime.InteropServices.StructLayoutAttribute
Public Overridable ReadOnly Property StructLayoutAttribute As StructLayoutAttribute

屬性值

取得描述目前類型概略配置特性的 StructLayoutAttributeGets a StructLayoutAttribute that describes the gross layout features of the current type.

例外狀況

基底類別不支援叫用的方法。The invoked method is not supported in the base class.

範例

下列程式碼範例會先定義類別、 結構和具有特殊的版面配置屬性 (在類別內,巢狀結構) 的結構。The following code example first defines a class, a structure, and a structure with special layout attributes (the structures are nested within the class). 然後此範例使用StructLayoutAttribute屬性,以取得StructLayoutAttribute的每個型別,並顯示屬性的屬性。The example then uses the StructLayoutAttribute property to obtain a StructLayoutAttribute for each type, and displays the properties of the attributes.

using namespace System;
using namespace System::Runtime::InteropServices;
value struct Test1
{
public:
   Byte B1;
   short S;
   Byte B2;
};


[StructLayout(LayoutKind::Explicit,Pack=1)]
value struct Test2
{
public:

   [FieldOffset(0)]
   Byte B1;

   [FieldOffset(1)]
   short S;

   [FieldOffset(3)]
   Byte B2;
};

static void DisplayLayoutAttribute( StructLayoutAttribute^ sla )
{
   Console::WriteLine( L"\r\nCharSet: {0}\r\n   Pack: {1}\r\n   Size: {2}\r\n  Value: {3}", sla->CharSet, sla->Pack, sla->Size, sla->Value );
}

int main()
{
   DisplayLayoutAttribute( Test1::typeid->StructLayoutAttribute );
   return 0;
}

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;
    }
}
Imports System
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

備註

StructLayoutAttribute 不會傳回GetCustomAttributes方法。StructLayoutAttribute is not returned by the GetCustomAttributes method. 相反地,使用這個屬性來取得它。Instead, use this property to get it.

適用於

另請參閱