IsolatedStorageFile.DeleteFile(String) 方法
定义
重要
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删除独立存储范围中的文件。
public:
void DeleteFile(System::String ^ file);public void DeleteFile(string file);member this.DeleteFile : string -> unitPublic Sub DeleteFile (file As String)参数
- file
- String
要在独立存储范围中删除的文件的相对路径。
例外
目标文件已打开或者路径不正确。
文件路径为 null。
示例
下面的代码示例使用 DeleteFile 方法删除独立存储中的多个文件。
public void DeleteFiles()
{
try
{
IsolatedStorageFile isoFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User |
IsolatedStorageScope.Assembly |
IsolatedStorageScope.Domain,
typeof(System.Security.Policy.Url),
typeof(System.Security.Policy.Url));
String[] dirNames = isoFile.GetDirectoryNames("*");
String[] fileNames = isoFile.GetFileNames("*");
// List the files currently in this Isolated Storage.
// The list represents all users who have personal
// preferences stored for this application.
if (fileNames.Length > 0)
{
for (int i = 0; i < fileNames.Length; ++i)
{
// Delete the files.
isoFile.DeleteFile(fileNames[i]);
}
// Confirm that no files remain.
fileNames = isoFile.GetFileNames("*");
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
Public Sub DeleteFiles()
Try
Dim isoFile As IsolatedStorageFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User Or _
IsolatedStorageScope.Assembly Or IsolatedStorageScope.Domain, _
GetType(System.Security.Policy.Url), GetType(System.Security.Policy.Url))
Dim name As String
Dim dirNames As String() = isoFile.GetDirectoryNames("*")
Dim fileNames As String() = isoFile.GetFileNames("*")
' List the files currently in this Isolated Storage.
' The list represents all users who have personal
' preferences stored for this application.
If fileNames.Length > 0 Then
For Each name In fileNames
' Delete the files.
isoFile.DeleteFile(name)
Next name
'Confirm no files are left.
fileNames = isoFile.GetFileNames("*")
End If
Catch ex As Exception
Console.WriteLine(ex.ToString())
End Try
End Sub
注解
删除后无法恢复已删除的文件。
如何：删除独立存储中的文件和目录示例演示了 方法的DeleteFile用法。
