刪除檔案和目錄
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 類別提供兩個刪除目錄和檔案的執行個體方法：DeleteDirectory 和 DeleteFile。如果您嘗試刪除不存在的檔案或目錄，就會擲回 IsolatedStorageFileException。如果萬用字元包含在名稱中，DeleteDirectory 在 DeleteFile 擲回 ArgumentException 的時候，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
Imports System.IO.IsolatedStorage
Public Module modmain
Sub Main()
' Get an isolated store for this assembly and put it into an
' IsolatedStoreFile object.
Dim isoStore As IsolatedStorageFile
isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User 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 Module
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.
}