如何：在独立存储中删除文件和目录
更新：2007 年 11 月
您可以删除独立存储文件中的目录和文件。请记住，在存储区中，文件名和目录名是与操作系统相关的（在 Microsoft Windows 系统中通常不区分大小写），并且是根据虚文件系统的根目录具体而定的。
IsolatedStoreFile 类提供了两种删除目录和文件的实例方法：DeleteDirectory 和 DeleteFile。如果尝试删除并不存在的文件和目录，则会引发 IsolatedStorageFileException。如果名称中包含有通配符，则 DeleteDirectory 会引发 IsolatedStorageFileException，而 DeleteFile 将引发 ArgumentException。
如果目录中包含任何文件或子目录，DeleteDirectory 将会失败。在 DeletingFilesAndDirectories 示例的一部分中定义了一个方法，该方法删除目录中的所有内容，然后删除目录本身。同样，您可以自己定义一个接受通配符的 DeleteFiles 方法，方法为：使用 GetFileNames 方法获取所有匹配文件的列表，然后依次删除每个文件。有关搜索存储区的虚文件系统的更多信息，请参见查找现有的文件和目录。
DeletingFilesAndDirectories 示例
下面的代码示例先创建若干个目录和文件，然后将它们删除。
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.
}