MessageQueuePermissionEntryCollection.Contains メソッドとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

MessageQueuePermissionEntryCollection.Contains メソッド

指定した MessageQueuePermissionEntry がコレクションに格納されているかどうかを確認します。

名前空間: System.Messaging
アセンブリ: System.Messaging (system.messaging.dll 内)
構文

Visual Basic (宣言)

Public Function Contains ( _
    value As MessageQueuePermissionEntry _
) As Boolean

Visual Basic (使用法)

Dim instance As MessageQueuePermissionEntryCollection
Dim value As MessageQueuePermissionEntry
Dim returnValue As Boolean

returnValue = instance.Contains(value)

public bool Contains (
    MessageQueuePermissionEntry value
)

C++

public:
bool Contains (
    MessageQueuePermissionEntry^ value
)

public boolean Contains (
    MessageQueuePermissionEntry value
)

JScript

public function Contains (
    value : MessageQueuePermissionEntry
) : boolean

パラメータ

value: 検索対象の MessageQueuePermissionEntry。

戻り値
指定した MessageQueuePermissionEntry がこのコレクションに属している場合は true。それ以外の場合は false。

使用例

Contains の使用方法を次のコード例に示します。

// Connect to a queue on the local computer.
MessageQueue queue = new MessageQueue(".\\exampleQueue");

// Create a new instance of MessageQueuePermission.
MessageQueuePermission permission = new MessageQueuePermission();

// Get an instance of MessageQueuePermissionEntryCollection from the
// permission's PermissionEntries property.
MessageQueuePermissionEntryCollection collection =
    permission.PermissionEntries;

// Create a new instance of MessageQueuePermissionEntry.
MessageQueuePermissionEntry entry = new MessageQueuePermissionEntry(
    MessageQueuePermissionAccess.Receive,
    queue.MachineName,
    queue.Label,
    queue.Category.ToString());

// Add the entry to the collection.
collection.Add(entry);

// Show that the collection contains the entry.
Console.WriteLine("Collection contains first entry (true/false):
 {0}",
    collection.Contains(entry));

// Create another new instance of MessageQueuePermissionEntry.
MessageQueuePermissionEntry newEntry = new MessageQueuePermissionEntry(
    MessageQueuePermissionAccess.Send,
    queue.MachineName,
    queue.Label,
    queue.Category.ToString());

// Show that the collection does not contain the new entry.
Console.WriteLine("Collection contains second entry (true/false):
 {0}",
    collection.Contains(newEntry));

C++

// Connect to a queue on the local computer.
MessageQueue^ queue = gcnew MessageQueue(".\\exampleQueue");

// Create a new instance of MessageQueuePermission.
MessageQueuePermission^ permission = gcnew MessageQueuePermission();

// Get an instance of MessageQueuePermissionEntryCollection from the
// permission's PermissionEntries property.
MessageQueuePermissionEntryCollection^ collection =
    permission->PermissionEntries;

// Create a new instance of MessageQueuePermissionEntry.
MessageQueuePermissionEntry^ entry = gcnew MessageQueuePermissionEntry(
    MessageQueuePermissionAccess::Receive, 
    queue->MachineName, 
    queue->Label, 
    queue->Category.ToString());

// Add the entry to the collection.
collection->Add(entry);

// Show that the collection contains the entry.
Console::WriteLine("Collection contains first entry (true/false):
 {0}",
    collection->Contains(entry));

// Create another new instance of MessageQueuePermissionEntry.
MessageQueuePermissionEntry^ newEntry = 
    gcnew MessageQueuePermissionEntry(
    MessageQueuePermissionAccess::Send, 
    queue->MachineName, 
    queue->Label, 
    queue->Category.ToString());

// Show that the collection does not contain the new entry.
Console::WriteLine(
    "Collection contains second entry (true/false):
 {0}",
    collection->Contains(newEntry));

queue->Close();

// Connect to a queue on the local computer.
MessageQueue queue = new MessageQueue(".\\exampleQueue");
// Create a new instance of MessageQueuePermission.
MessageQueuePermission permission = new MessageQueuePermission();
// Get an instance of MessageQueuePermissionEntryCollection from the
// permission's PermissionEntries property.
MessageQueuePermissionEntryCollection collection =
    permission.get_PermissionEntries();
// Create a new instance of MessageQueuePermissionEntry.
MessageQueuePermissionEntry entry =
    new MessageQueuePermissionEntry(MessageQueuePermissionAccess.Receive
,
    queue.get_MachineName(), queue.get_Label(),
    queue.get_Category().ToString());
// Add the entry to the collection.
collection.Add(entry);
// Show that the collection contains the entry.
Console.WriteLine("Collection contains first entry (true/false):
 {0}",
    ((System.Boolean)collection.Contains(entry)).ToString());
// Create another new instance of MessageQueuePermissionEntry.
MessageQueuePermissionEntry newEntry =
    new MessageQueuePermissionEntry(MessageQueuePermissionAccess.Send
,
    queue.get_MachineName(), queue.get_Label(),
    queue.get_Category().ToString());
// Show that the collection does not contain the new entry.
Console.WriteLine("Collection contains second entry (true/false):
 {0}",
    ((System.Boolean)collection.Contains(newEntry)).ToString());