作法：刪除隔離儲存區中的檔案和目錄
您可以刪除隔離儲存區檔案中的目錄和檔案。 在存放區內，檔案和目錄名稱都與作業系統相依，且會指定為相對於虛擬檔案系統的根目錄。 它們在 Windows 作業系統上不區分大小寫。
System.IO.IsolatedStorage.IsolatedStorageFile 類別提供兩種方法來刪目錄和檔案：DeleteDirectory 和 DeleteFile。 如果您嘗試刪除不存在的檔案或目錄，會擲回 IsolatedStorageException 例外狀況。 如果您在名稱中包含萬用字元，DeleteDirectory 會擲回 IsolatedStorageException 例外狀況，且 DeleteFile 會擲回 ArgumentException 例外狀況。
如果目錄中包含任何檔案或子目錄，則 DeleteDirectory 方法將會失敗。 您可以使用 GetFileNames 和 GetDirectoryNames 方法擷取現有的檔案和目錄。 如需有關搜尋存放區的虛擬檔案系統的詳細資訊，請參閱操作說明：尋找隔離儲存區中的現有檔案和目錄。
範例
下列程式碼範例會建立數個目錄和檔案，然後再加以刪除。
using namespace System;
using namespace System::IO::IsolatedStorage;
using namespace System::IO;
public ref class DeletingFilesDirectories
{
public:
static void Main()
{
// Get a new isolated store for this user domain and assembly.
// Put the store into an isolatedStorageFile object.
IsolatedStorageFile^ isoStore = IsolatedStorageFile::GetStore(IsolatedStorageScope::User |
IsolatedStorageScope::Domain | IsolatedStorageScope::Assembly, (Type ^)nullptr, (Type ^)nullptr);
Console::WriteLine("Creating Directories:");
// This code creates several different directories.
isoStore->CreateDirectory("TopLevelDirectory");
Console::WriteLine("TopLevelDirectory");
isoStore->CreateDirectory("TopLevelDirectory/SecondLevel");
Console::WriteLine("TopLevelDirectory/SecondLevel");
// This code creates two new directories, one inside the other.
isoStore->CreateDirectory("AnotherTopLevelDirectory/InsideDirectory");
Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory");
Console::WriteLine();
// This code creates a few files and places them in the directories.
Console::WriteLine("Creating Files:");
// This file is placed in the root.
IsolatedStorageFileStream^ isoStream1 = gcnew IsolatedStorageFileStream("InTheRoot.txt",
FileMode::Create, isoStore);
Console::WriteLine("InTheRoot.txt");
isoStream1->Close();
// This file is placed in the InsideDirectory.
IsolatedStorageFileStream^ isoStream2 = gcnew IsolatedStorageFileStream(
"AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt", FileMode::Create, isoStore);
Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
Console::WriteLine();
isoStream2->Close();
Console::WriteLine("Deleting File:");
// This code deletes the HereIAm.txt file.
isoStore->DeleteFile("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
Console::WriteLine();
Console::WriteLine("Deleting Directory:");
// This code deletes the InsideDirectory.
isoStore->DeleteDirectory("AnotherTopLevelDirectory/InsideDirectory/");
Console::WriteLine("AnotherTopLevelDirectory/InsideDirectory/");
Console::WriteLine();
} // End of main.
};
int main()
{
DeletingFilesDirectories::Main();
}
using System;
using System.IO.IsolatedStorage;
using System.IO;
public class DeletingFilesDirectories
{
public static void Main()
{
// Get a new isolated store for this user domain and assembly.
// Put the store into an isolatedStorageFile object.
IsolatedStorageFile isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User |
IsolatedStorageScope.Domain | IsolatedStorageScope.Assembly, null, null);
Console.WriteLine("Creating Directories:");
// This code creates several different directories.
isoStore.CreateDirectory("TopLevelDirectory");
Console.WriteLine("TopLevelDirectory");
isoStore.CreateDirectory("TopLevelDirectory/SecondLevel");
Console.WriteLine("TopLevelDirectory/SecondLevel");
// This code creates two new directories, one inside the other.
isoStore.CreateDirectory("AnotherTopLevelDirectory/InsideDirectory");
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory");
Console.WriteLine();
// This code creates a few files and places them in the directories.
Console.WriteLine("Creating Files:");
// This file is placed in the root.
IsolatedStorageFileStream isoStream1 = new IsolatedStorageFileStream("InTheRoot.txt",
FileMode.Create, isoStore);
Console.WriteLine("InTheRoot.txt");
isoStream1.Close();
// This file is placed in the InsideDirectory.
IsolatedStorageFileStream isoStream2 = new IsolatedStorageFileStream(
"AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt", FileMode.Create, isoStore);
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
Console.WriteLine();
isoStream2.Close();
Console.WriteLine("Deleting File:");
// This code deletes the HereIAm.txt file.
isoStore.DeleteFile("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt");
Console.WriteLine();
Console.WriteLine("Deleting Directory:");
// This code deletes the InsideDirectory.
isoStore.DeleteDirectory("AnotherTopLevelDirectory/InsideDirectory/");
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/");
Console.WriteLine();
} // End of main.
}
Imports System.IO.IsolatedStorage
Imports System.IO
Public Class DeletingFilesDirectories
Public Shared Sub Main()
' Get a new isolated store for this user domain and assembly.
' Put the store into an isolatedStorageFile object.
Dim isoStore As IsolatedStorageFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User Or
IsolatedStorageScope.Domain Or IsolatedStorageScope.Assembly, Nothing, Nothing)
Console.WriteLine("Creating Directories:")
' This code creates several different directories.
isoStore.CreateDirectory("TopLevelDirectory")
Console.WriteLine("TopLevelDirectory")
isoStore.CreateDirectory("TopLevelDirectory/SecondLevel")
Console.WriteLine("TopLevelDirectory/SecondLevel")
' This code creates two new directories, one inside the other.
isoStore.CreateDirectory("AnotherTopLevelDirectory/InsideDirectory")
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory")
Console.WriteLine()
' This code creates a few files and places them in the directories.
Console.WriteLine("Creating Files:")
' This file is placed in the root.
Dim isoStream1 As New IsolatedStorageFileStream("InTheRoot.txt", FileMode.Create, isoStore)
Console.WriteLine("InTheRoot.txt")
isoStream1.Close()
' This file is placed in the InsideDirectory.
Dim isoStream2 As New IsolatedStorageFileStream(
"AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt", FileMode.Create, isoStore)
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt")
Console.WriteLine()
isoStream2.Close()
Console.WriteLine("Deleting File:")
' This code deletes the HereIAm.txt file.
isoStore.DeleteFile("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt")
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/HereIAm.txt")
Console.WriteLine()
Console.WriteLine("Deleting Directory:")
' This code deletes the InsideDirectory.
isoStore.DeleteDirectory("AnotherTopLevelDirectory/InsideDirectory/")
Console.WriteLine("AnotherTopLevelDirectory/InsideDirectory/")
Console.WriteLine()
End Sub
End Class
