LogicalMethodInfo.GetCustomAttribute メソッド

.NET Framework クラス ライブラリ リファレンス

LogicalMethodInfo.GetCustomAttribute メソッド

カスタム属性がこの型に適用されている場合は、最初に適用されたカスタム属性を返します。

名前空間: System.Web.Services.Protocols
アセンブリ: System.Web.Services (system.web.services.dll 内)
構文

Visual Basic (宣言)

Public Function GetCustomAttribute ( _
    type As Type _
) As Object

Visual Basic (使用法)

Dim instance As LogicalMethodInfo
Dim type As Type
Dim returnValue As Object

returnValue = instance.GetCustomAttribute(type)

C#

public Object GetCustomAttribute (
    Type type
)

C++

public:
Object^ GetCustomAttribute (
    Type^ type
)

J#

public Object GetCustomAttribute (
    Type type
)

JScript

public function GetCustomAttribute (
    type : Type
) : Object

パラメータ

type

カスタム属性を適用する対象の Type。

戻り値
type パラメータに適用された最初のカスタム属性を格納している Object。

例外

例外の種類	条件
TypeLoadException	カスタム属性の型を読み込むことができません。

使用例

Visual Basic

Imports System
Imports System.Reflection
Imports System.Web.Services.Protocols
Imports MicroSoft.VisualBasic

' Define a custom attribute with one named parameter.
<AttributeUsage(AttributeTargets.Method Or AttributeTargets.ReturnValue,
 AllowMultiple := True)>  _
Public Class MyAttribute
   Inherits Attribute

   Private myName As String
   
   Public Sub New(name As
 String)
      myName = name
   End Sub 'New
   
   Public ReadOnly Property
 Name() As String
      Get
         Return myName
      End Get
   End Property
End Class 'MyAttribute

Public Class MyService
   
<MyAttribute("This is the first sample attribute"),
 MyAttribute("This is the second sample attribute")>
  _
   Public Function Add(xValue As
 Integer, yValue As Integer)
  _
                 As<MyAttribute("This is
 the return sample attribute")> Integer
      Return xValue + yValue
   End Function 'Add
End Class 'MyService


Public Class LogicalMethodInfo_GetCustomAttribute
   
   Public Shared Sub Main()
      Dim myType As Type = GetType(MyService)
      Dim myMethodInfo As MethodInfo = myType.GetMethod("Add")
      ' Create a synchronous 'LogicalMethodInfo' instance.
      Dim myLogicalMethodInfo As LogicalMethodInfo
 = _
                 LogicalMethodInfo.Create(New MethodInfo() {myMethodInfo},
 LogicalMethodTypes.Sync)(0)
      ' Display the method for which the attributes are being displayed.
      Console.WriteLine(ControlChars.NewLine + "Displaying the
 attributes for the method : {0}" + _
                 ControlChars.NewLine, myLogicalMethodInfo.MethodInfo.ToString())
      
      ' Displaying a custom attribute of type 'MyAttribute'
      Console.WriteLine(ControlChars.NewLine + "Displaying attribute of
 type 'MyAttribute'" + _
                 ControlChars.NewLine)
      Dim attribute As Object
 = myLogicalMethodInfo.GetCustomAttribute(GetType(MyAttribute))
      Console.WriteLine(CType(attribute, MyAttribute).Name)
      
      ' Display all custom attribute of type 'MyAttribute'.
      Console.WriteLine(ControlChars.NewLine + "Displaying all attributes of
 type 'MyAttribute'" + _
                 ControlChars.NewLine)
      Dim attributes As Object()
 = myLogicalMethodInfo.GetCustomAttributes(GetType(MyAttribute))
      Dim i As Integer
      For i = 0 To attributes.Length - 1
         Console.WriteLine(CType(attributes(i), MyAttribute).Name)
      Next i 
      ' Display all return attributes of type 'MyAttribute'.
      Console.WriteLine(ControlChars.NewLine + "Displaying all return
 attributes of type 'MyAttribute'" + _
                 ControlChars.NewLine)
      Dim myCustomAttributeProvider As ICustomAttributeProvider
 = _
                 myLogicalMethodInfo.ReturnTypeCustomAttributeProvider
      If myCustomAttributeProvider.IsDefined(GetType(MyAttribute),
 True) Then
         attributes = myCustomAttributeProvider.GetCustomAttributes(True)

         For i = 0 To attributes.Length - 1
            If attributes(i).GetType().Equals(GetType(MyAttribute))
 Then
               Console.WriteLine(CType(attributes(i), MyAttribute).Name)
            End If
         Next i 
      End If ' Display all the
 custom attributes of type 'MyAttribute'.
      Console.WriteLine(ControlChars.NewLine + "Displaying all attributes of
 type 'MyAttribute'" + _
                 ControlChars.NewLine)
      myCustomAttributeProvider = myLogicalMethodInfo.CustomAttributeProvider
      If myCustomAttributeProvider.IsDefined(GetType(MyAttribute),
 True) Then
         attributes = myCustomAttributeProvider.GetCustomAttributes(True)

         For i = 0 To attributes.Length - 1
            If attributes(i).GetType().Equals(GetType(MyAttribute))
 Then
               Console.WriteLine(CType(attributes(i), MyAttribute).Name)
            End If
         Next i
      End If
   End Sub 'Main 
End Class 'LogicalMethodInfo_GetCustomAttribute

C#

using System;
using System.Reflection;
using System.Web.Services.Protocols;

// Define a custom attribute with one named parameter.
[AttributeUsage(AttributeTargets.Method | AttributeTargets.ReturnValue, AllowMultiple=true)]
public class MyAttribute : Attribute
{
   private string myName;
   public MyAttribute(string name)
   {
      myName = name;
   }
   public string Name 
   {
      get 
      {
         return myName;
      }
   }
}

public class MyService 
{
   [MyAttribute("This is the first sample attribute")]
   [MyAttribute("This is the second sample attribute")]
   [return: MyAttribute("This is the return
 sample attribute")]
   public int Add(int xValue,
 int yValue)
   {
      return (xValue + yValue);
   }
}

public class LogicalMethodInfo_GetCustomAttribute
{
   public static void Main()
   {
      Type myType = typeof(MyService);
      MethodInfo myMethodInfo = myType.GetMethod("Add");
      // Create a synchronous 'LogicalMethodInfo' instance.
      LogicalMethodInfo myLogicalMethodInfo = 
         (LogicalMethodInfo.Create(new MethodInfo[] {myMethodInfo},
 
                                   LogicalMethodTypes.Sync))[0];
      // Display the method for which the attributes are being displayed.
      Console.WriteLine("\nDisplaying the attributes for
 the method : {0}\n",
                           myLogicalMethodInfo.MethodInfo);

      // Displaying a custom attribute of type 'MyAttribute'
      Console.WriteLine("\nDisplaying attribute of type 'MyAttribute'\n");
      object attribute = myLogicalMethodInfo.GetCustomAttribute(typeof(MyAttribute));
      Console.WriteLine(((MyAttribute)attribute).Name);

      // Display all custom attribute of type 'MyAttribute'.
      Console.WriteLine("\nDisplaying all attributes of type 'MyAttribute'\n");
      object[] attributes = myLogicalMethodInfo.GetCustomAttributes(typeof(MyAttribute));
      for(int i = 0; i < attributes.Length;
 i++)
         Console.WriteLine(((MyAttribute)attributes[i]).Name);

      // Display all return attributes of type 'MyAttribute'.
      Console.WriteLine("\nDisplaying all return attributes
 of type 'MyAttribute'\n");
      ICustomAttributeProvider myCustomAttributeProvider = 
                  myLogicalMethodInfo.ReturnTypeCustomAttributeProvider;
      if(myCustomAttributeProvider.IsDefined(typeof(MyAttribute),
 true))
      {
         attributes = myCustomAttributeProvider.GetCustomAttributes(true);
         for(int i = 0; i < attributes.Length;
 i++)
            if(attributes[i].GetType().Equals(typeof(MyAttribute)))
               Console.WriteLine(((MyAttribute)attributes[i]).Name);
      }

      // Display all the custom attributes of type 'MyAttribute'.
      Console.WriteLine("\nDisplaying all attributes of type 'MyAttribute'\n");
      myCustomAttributeProvider = myLogicalMethodInfo.CustomAttributeProvider;
      if(myCustomAttributeProvider.IsDefined(typeof(MyAttribute),
 true))
      {
         attributes = myCustomAttributeProvider.GetCustomAttributes(true);
         for(int i = 0; i < attributes.Length;
 i++)
            if(attributes[i].GetType().Equals(typeof(MyAttribute)))
               Console.WriteLine(((MyAttribute)attributes[i]).Name);
      }
   }
}

C++

#using <System.Web.Services.dll>

using namespace System;
using namespace System::Reflection;
using namespace System::Web::Services::Protocols;

// Define a custom attribute with one named parameter.

[AttributeUsage(AttributeTargets::Method|AttributeTargets::ReturnValue,
AllowMultiple=true)]
public ref class MyAttribute: public
 Attribute
{
private:
   String^ myName;

public:
   MyAttribute( String^ name )
   {
      myName = name;
   }

   property String^ Name 
   {
      String^ get()
      {
         return myName;
      }
   }
};

public ref class MyService
{
public:

   [MyAttribute("This is the first sample attribute")]
   [MyAttribute("This is the second sample attribute")]
   [returnvalue:MyAttribute("This is the return sample attribute")]
   int Add( int xValue, int
 yValue )
   {
      return (xValue + yValue);
   }
};

int main()
{
   Type^ myType = MyService::typeid;
   MethodInfo^ myMethodInfo = myType->GetMethod( "Add" );

   // Create a synchronous 'LogicalMethodInfo' instance.
   array<MethodInfo^>^temparray = {myMethodInfo};
   LogicalMethodInfo^ myLogicalMethodInfo = (LogicalMethodInfo::Create( temparray,
 LogicalMethodTypes::Sync ))[ 0 ];

   // Display the method for which the attributes are being displayed.
   Console::WriteLine( "\nDisplaying the attributes for the
 method : {0}\n", myLogicalMethodInfo->MethodInfo );

   // Displaying a custom attribute of type 'MyAttribute'
   Console::WriteLine( "\nDisplaying attribute of type 'MyAttribute'\n"
 );
   Object^ attribute = myLogicalMethodInfo->GetCustomAttribute( MyAttribute::typeid
 );
   Console::WriteLine( (dynamic_cast<MyAttribute^>(attribute))->Name );

   // Display all custom attribute of type 'MyAttribute'.
   Console::WriteLine( "\nDisplaying all attributes of type 'MyAttribute'\n"
 );
   array<Object^>^attributes = myLogicalMethodInfo->GetCustomAttributes(
 MyAttribute::typeid );
   for ( int i = 0; i < attributes->Length;
 i++ )
      Console::WriteLine( (dynamic_cast<MyAttribute^>(attributes[ i ]))->Name
 );

   // Display all return attributes of type 'MyAttribute'.
   Console::WriteLine( "\nDisplaying all return attributes
 of type 'MyAttribute'\n" );
   ICustomAttributeProvider^ myCustomAttributeProvider = myLogicalMethodInfo->ReturnTypeCustomAttributeProvider;
   if ( myCustomAttributeProvider->IsDefined( MyAttribute::typeid,
 true ) )
   {
      attributes = myCustomAttributeProvider->GetCustomAttributes( true
 );
      for ( int i = 0; i < attributes->Length;
 i++ )
         if ( attributes[ i ]->GetType()->Equals( MyAttribute::typeid
 ) )
                  Console::WriteLine( (dynamic_cast<MyAttribute^>(attributes[ i ]))->Name
 );
   }

   // Display all the custom attributes of type 'MyAttribute'.
   Console::WriteLine( "\nDisplaying all attributes of type 'MyAttribute'\n"
 );
   myCustomAttributeProvider = myLogicalMethodInfo->CustomAttributeProvider;
   if ( myCustomAttributeProvider->IsDefined( MyAttribute::typeid,
 true ) )
   {
      attributes = myCustomAttributeProvider->GetCustomAttributes( true
 );
      for ( int i = 0; i < attributes->Length;
 i++ )
         if ( attributes[ i ]->GetType()->Equals( MyAttribute::typeid
 ) )
                  Console::WriteLine( (dynamic_cast<MyAttribute^>(attributes[ i ]))->Name
 );
   }
}

J#

import System.*;
import System.Reflection.*;
import System.Web.Services.Protocols.*;

// Define a custom attribute with one named parameter.
/** @attribute AttributeUsage(AttributeTargets.Method 
    | AttributeTargets.ReturnValue, AllowMultiple = true)
 */
public class MyAttribute extends Attribute
{
    private String myName;

    public MyAttribute(String name)
    {
        myName = name;
    } //MyAttribute

    /** @property 
     */
    public String get_Name()
    {
        return myName;
    } //get_Name
} //MyAttribute

public class MyService
{
    /** @attribute MyAttribute("This is the first sample attribute")
     */
    /** @attribute MyAttribute("This is the second sample attribute")
     */
    /** @attribute.return MyAttribute("This is the return
 sample attribute")
     */
    public int Add(int xValue,
 int yValue)
    {
        return xValue + yValue;
    } //Add
} //MyService

public class LogicalMethodInfo_GetCustomAttribute
{
    public static void main(String[]
 args)
    {
        Type myType = MyService.class.ToType();
        MethodInfo myMethodInfo = myType.GetMethod("Add");

        // Create a synchronous 'LogicalMethodInfo' instance.
        LogicalMethodInfo myLogicalMethodInfo = 
            (LogicalMethodInfo)LogicalMethodInfo.Create(new MethodInfo[]
 
            { myMethodInfo }, LogicalMethodTypes.Sync).get_Item(0);

        // Display the method for which the attributes are being displayed.
        Console.WriteLine("\nDisplaying the attributes for
 the method : {0}\n",
            myLogicalMethodInfo.get_MethodInfo());

        // Displaying a custom attribute of type 'MyAttribute'
        Console.WriteLine("\nDisplaying attribute of type 'MyAttribute'\n");
        Object attribute = myLogicalMethodInfo.GetCustomAttribute(
            MyAttribute.class.ToType());
        Console.WriteLine(((MyAttribute)attribute).get_Name());

        // Display all custom attribute of type 'MyAttribute'.
        Console.WriteLine("\nDisplaying all attributes of type "
            + "'MyAttribute'\n");
        Object attributes[] = 
            myLogicalMethodInfo.GetCustomAttributes(MyAttribute.class.ToType());
        for (int i = 0; i < attributes.length;
 i++) {
            Console.WriteLine(((MyAttribute)attributes.get_Item(i)).get_Name());
        }
        // Display all return attributes of type 'MyAttribute'.
        Console.WriteLine("\nDisplaying all return attributes
 "
            + "of type 'MyAttribute'\n");
        ICustomAttributeProvider myCustomAttributeProvider = 
            myLogicalMethodInfo.get_ReturnTypeCustomAttributeProvider();
        if (myCustomAttributeProvider.IsDefined(MyAttribute.class.ToType(),
 
            true)) {
            attributes = myCustomAttributeProvider.GetCustomAttributes(true);
            for (int i = 0; i < attributes.length;
 i++) {
                if (attributes.get_Item(i).GetType().
                    Equals(MyAttribute.class.ToType())) {
                    Console.WriteLine(((MyAttribute)(attributes.get_Item(i))).
                        get_Name());
                }
            }
        }

        // Display all the custom attributes of type 'MyAttribute'.
        Console.WriteLine("\nDisplaying all attributes of type 'MyAttribute'\n");
        myCustomAttributeProvider = 
            myLogicalMethodInfo.get_CustomAttributeProvider();
        if (myCustomAttributeProvider.IsDefined(MyAttribute.class.ToType(),
 
            true)) {
            attributes = myCustomAttributeProvider.GetCustomAttributes(true);
            for (int i = 0; i < attributes.length;
 i++) {
                if (attributes.get_Item(i).GetType().
                    Equals(MyAttribute.class.ToType())) {
                    Console.WriteLine(((MyAttribute)attributes.get_Item(i)).
                        get_Name());
                }
            }
        }
    } //main
} //LogicalMethodInfo_GetCustomAttribute

プラットフォーム

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0、1.0

参照

関連項目
LogicalMethodInfo クラス
LogicalMethodInfo メンバ
System.Web.Services.Protocols 名前空間