方法:分離ストレージでストアを削除する

  • [アーティクル]

分離ストレージ ファイルを削除するため、 IsolatedStorageFile クラスは 2 つのメソッドを提供します。

  • インスタンス メソッド Remove() は引数を使わず、そのインスタンス メソッドを呼び出すストアを削除します。 この操作にアクセス許可は必要ありません。 ストアにアクセスできるすべてのコードは、その内部の一部のデータやすべてのデータを削除できます。

  • 静的メソッド Remove(IsolatedStorageScope) は User 列挙値を使い、コードを実行するユーザーのすべてのストアを削除します。 この操作を実行するには、 IsolatedStorageFilePermission の値に対する AdministerIsolatedStorageByUser アクセス許可が必要です。

例

静的およびンスタンス Remove メソッドの使い方を次のコード例に示します。 クラスは、次の 2 つのストアを取得します。1 つは、ユーザーとアセンブリで使うように分離して、もう 1 つは、ユーザー、ドメイン、アセンブリで使うように分離します。 次に、分離ストレージ ファイル isoStore1 の Remove() メソッドを呼び出すことにより、ユーザー、ドメイン、アセンブリのストアが削除されます。 その後、静的メソッド Remove(IsolatedStorageScope)を呼び出すことによって、ユーザーの残りのストアすべてを削除します。

using namespace System;
using namespace System::IO::IsolatedStorage;

public ref class DeletingStores
{
public:
    static void Main()
    {
        // Get a new isolated store for this user, domain, and assembly.
        // Put the store into an IsolatedStorageFile object.

        IsolatedStorageFile^ isoStore1 =  IsolatedStorageFile::GetStore(IsolatedStorageScope::User |
            IsolatedStorageScope::Domain | IsolatedStorageScope::Assembly, (Type ^)nullptr, (Type ^)nullptr);
        Console::WriteLine("A store isolated by user, assembly, and domain has been obtained.");

        // Get a new isolated store for user and assembly.
        // Put that store into a different IsolatedStorageFile object.

        IsolatedStorageFile^ isoStore2 = IsolatedStorageFile::GetStore(IsolatedStorageScope::User |
            IsolatedStorageScope::Assembly, (Type ^)nullptr, (Type ^)nullptr);
        Console::WriteLine("A store isolated by user and assembly has been obtained.");

        // The Remove method deletes a specific store, in this case the
        // isoStore1 file.

        isoStore1->Remove();
        Console::WriteLine("The user, domain, and assembly isolated store has been deleted.");

        // This static method deletes all the isolated stores for this user.

        IsolatedStorageFile::Remove(IsolatedStorageScope::User);
        Console::WriteLine("All isolated stores for this user have been deleted.");
    } // End of Main.
};

int main()
{
    DeletingStores::Main();
}

using System;
using System.IO.IsolatedStorage;

public class DeletingStores
{
    public static void Main()
    {
        // Get a new isolated store for this user, domain, and assembly.
        // Put the store into an IsolatedStorageFile object.

        IsolatedStorageFile isoStore1 =  IsolatedStorageFile.GetStore(IsolatedStorageScope.User |
            IsolatedStorageScope.Domain | IsolatedStorageScope.Assembly, null, null);
        Console.WriteLine("A store isolated by user, assembly, and domain has been obtained.");

        // Get a new isolated store for user and assembly.
        // Put that store into a different IsolatedStorageFile object.

        IsolatedStorageFile isoStore2 = IsolatedStorageFile.GetStore(IsolatedStorageScope.User |
            IsolatedStorageScope.Assembly, null, null);
        Console.WriteLine("A store isolated by user and assembly has been obtained.");

        // The Remove method deletes a specific store, in this case the
        // isoStore1 file.

        isoStore1.Remove();
        Console.WriteLine("The user, domain, and assembly isolated store has been deleted.");

        // This static method deletes all the isolated stores for this user.

        IsolatedStorageFile.Remove(IsolatedStorageScope.User);
        Console.WriteLine("All isolated stores for this user have been deleted.");
    } // End of Main.
}

Imports System.IO.IsolatedStorage

Public Class DeletingStores
    Public Shared Sub Main()
        ' Get a new isolated store for this user, domain, and assembly.
        ' Put the store into an IsolatedStorageFile object.

        Dim isoStore1 As IsolatedStorageFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User Or
            IsolatedStorageScope.Domain Or IsolatedStorageScope.Assembly, Nothing, Nothing)
        Console.WriteLine("A store isolated by user, assembly, and domain has been obtained.")

        ' Get a new isolated store for user and assembly.
        ' Put that store into a different IsolatedStorageFile object.

        Dim isoStore2 As IsolatedStorageFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User Or
            IsolatedStorageScope.Assembly, Nothing, Nothing)
        Console.WriteLine("A store isolated by user and assembly has been obtained.")

        ' The Remove method deletes a specific store, in this case the
        ' isoStore1 file.

        isoStore1.Remove()
        Console.WriteLine("The user, domain, and assembly isolated store has been deleted.")

        ' This static method deletes all the isolated stores for this user.

        IsolatedStorageFile.Remove(IsolatedStorageScope.User)
        Console.WriteLine("All isolated stores for this user have been deleted.")

    End Sub
End Class

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