HOW TO：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內的目錄和檔案。 請記得，在存放區內，目錄和檔案名稱是與作業系統有關的 (在 Microsoft Windows 系統上通常不是區分大小寫的)，並且是相對於虛擬檔案系統的根目錄來指定的。
IsolatedStoreFile 類別提供兩個執行個體方法以刪除目錄及檔案：DeleteDirectory 和 DeleteFile。 如果您嘗試刪除不存在的檔案或目錄，就會擲回 IsolatedStorageFileException。 如果名稱中包含萬用字元，則當 DeleteFile 擲回 ArgumentException 時，DeleteDirectory 會擲回 IsolatedStorageFileException。
如果目錄包含任何檔案或子目錄，DeleteDirectory 方法就會失敗。 這個方法是 DeletingFilesAndDirectories 範例的一部分，是定義為要刪除目錄的所有內容及目錄本身。 相同地，您可以使用 GetFileNames 方法取得所有相符檔案的清單，接著依次刪除每個檔案，自行定義接受萬用字元的 DeleteFiles 方法。 如需搜尋存放區的虛擬檔案系統的詳細資訊，請參閱尋找現有檔案和目錄。
DeletingFilesAndDirectories 範例
下列程式碼範例建立並接著刪除數個目錄和檔案。
Imports System
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 of main.
End Class
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.
}
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();
}