FileIOPermission.GetPathList(FileIOPermissionAccess) Metoda
Definicja
Ważne
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Pobiera wszystkie pliki i katalogi z określonym FileIOPermissionAccess.
public:
cli::array <System::String ^> ^ GetPathList(System::Security::Permissions::FileIOPermissionAccess access);public string[] GetPathList (System.Security.Permissions.FileIOPermissionAccess access);member this.GetPathList : System.Security.Permissions.FileIOPermissionAccess -> string[]Public Function GetPathList (access As FileIOPermissionAccess) As String()Parametry
- access
- FileIOPermissionAccess
FileIOPermissionAccess Jedna z wartości reprezentujących pojedynczy typ dostępu do plików.
Zwraca
- String[]
Tablica zawierająca ścieżki plików i katalogów, do których udzielono dostępu określonego access przez parametr .
Wyjątki
accessnie jest prawidłową wartością .FileIOPermissionAccess
-lub-
access to AllAccess, który reprezentuje więcej niż jeden typ dostępu do plików lub NoAccess, który nie reprezentuje żadnego typu dostępu do plików.
Przykłady
Poniższy przykład kodu przedstawia użycie GetPathList metody . Ten przykład jest częścią większego przykładu udostępnionego FileIOPermission dla klasy .
bool SetGetPathListDemo()
{
try
{
Console::WriteLine( "********************************************************\n" );
FileIOPermission^ fileIOPerm1;
Console::WriteLine( "Creating a FileIOPermission with AllAccess rights for 'C:\\Examples\\Test\\TestFile.txt" );
fileIOPerm1 = gcnew FileIOPermission( FileIOPermissionAccess::AllAccess,"C:\\Examples\\Test\\TestFile.txt" );
Console::WriteLine( "Adding 'C:\\Temp' to the write access list, and \n 'C:\\Examples\\Test' to read access." );
fileIOPerm1->AddPathList( FileIOPermissionAccess::Write, "C:\\Temp" );
fileIOPerm1->AddPathList( FileIOPermissionAccess::Read, "C:\\Examples\\Test" );
array<String^>^paths = fileIOPerm1->GetPathList( FileIOPermissionAccess::Read );
Console::WriteLine( "Read access before SetPathList = " );
IEnumerator^ myEnum = paths->GetEnumerator();
while ( myEnum->MoveNext() )
{
String^ path = safe_cast<String^>(myEnum->Current);
Console::WriteLine( "\t{0}", path );
}
Console::WriteLine( "Setting the read access list to \n'C:\\Temp'" );
fileIOPerm1->SetPathList( FileIOPermissionAccess::Read, "C:\\Temp" );
paths = fileIOPerm1->GetPathList( FileIOPermissionAccess::Read );
Console::WriteLine( "Read access list after SetPathList = " );
IEnumerator^ myEnum1 = paths->GetEnumerator();
while ( myEnum1->MoveNext() )
{
String^ path = safe_cast<String^>(myEnum1->Current);
Console::WriteLine( "\t{0}", path );
}
paths = fileIOPerm1->GetPathList( FileIOPermissionAccess::Write );
Console::WriteLine( "Write access list after SetPathList = " );
IEnumerator^ myEnum2 = paths->GetEnumerator();
while ( myEnum2->MoveNext() )
{
String^ path = safe_cast<String^>(myEnum2->Current);
Console::WriteLine( "\t{0}", path );
}
Console::WriteLine( "Write access = \n{0}", fileIOPerm1->GetPathList( FileIOPermissionAccess::AllAccess ) );
}
catch ( ArgumentException^ e )
{
// FileIOPermissionAccess.AllAccess can not be used as a parameter for GetPathList.
Console::WriteLine( "An ArgumentException occurred as a result of using AllAccess. This property cannot be used as a parameter in GetPathList because it represents more than one type of file variable access. : \n{0}", e );
}
return true;
}
private bool SetGetPathListDemo()
{
try
{
Console.WriteLine("********************************************************\n");
FileIOPermission fileIOPerm1;
Console.WriteLine("Creating a FileIOPermission with AllAccess rights for 'C:\\Examples\\Test\\TestFile.txt");
fileIOPerm1 = new FileIOPermission(FileIOPermissionAccess.AllAccess, "C:\\Examples\\Test\\TestFile.txt");
Console.WriteLine("Adding 'C:\\Temp' to the write access list, and \n 'C:\\Examples\\Test' to read access.");
fileIOPerm1.AddPathList(FileIOPermissionAccess.Write, "C:\\Temp");
fileIOPerm1.AddPathList(FileIOPermissionAccess.Read, "C:\\Examples\\Test");
string[] paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read);
Console.WriteLine("Read access before SetPathList = ");
foreach (string path in paths)
{
Console.WriteLine("\t" + path);
}
Console.WriteLine("Setting the read access list to \n'C:\\Temp'");
fileIOPerm1.SetPathList(FileIOPermissionAccess.Read, "C:\\Temp");
paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read);
Console.WriteLine("Read access list after SetPathList = ");
foreach (string path in paths)
{
Console.WriteLine("\t" + path);
}
paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Write);
Console.WriteLine("Write access list after SetPathList = ");
foreach (string path in paths)
{
Console.WriteLine("\t" + path);
}
Console.WriteLine("Write access = \n" +
fileIOPerm1.GetPathList(FileIOPermissionAccess.AllAccess));
}
catch (ArgumentException e)
{
// FileIOPermissionAccess.AllAccess can not be used as a parameter for GetPathList.
Console.WriteLine("An ArgumentException occurred as a result of using AllAccess. "
+ "This property cannot be used as a parameter in GetPathList "
+ "because it represents more than one type of file variable access. : \n" + e);
}
return true;
}
Private Function SetGetPathListDemo() As Boolean
Try
Console.WriteLine("********************************************************" & ControlChars.Lf)
Dim fileIOPerm1 As FileIOPermission
Console.WriteLine("Creating a FileIOPermission with AllAccess rights for 'C:\Examples\Test\TestFile.txt")
fileIOPerm1 = New FileIOPermission(FileIOPermissionAccess.AllAccess, "C:\Examples\Test\TestFile.txt")
Console.WriteLine("Adding 'C:\Temp' to the write access list, and " & ControlChars.Lf & " 'C:\Examples\Test' to read access.")
fileIOPerm1.AddPathList(FileIOPermissionAccess.Write, "C:\Temp")
fileIOPerm1.AddPathList(FileIOPermissionAccess.Read, "C:\Examples\Test")
Dim paths As String() = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read)
Console.WriteLine("Read access before SetPathList = ")
Dim path As String
For Each path In paths
Console.WriteLine((ControlChars.Tab & path))
Next path
Console.WriteLine("Setting the read access list to " & ControlChars.Lf & "'C:\Temp'")
fileIOPerm1.SetPathList(FileIOPermissionAccess.Read, "C:\Temp")
paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read)
Console.WriteLine("Read access list after SetPathList = ")
For Each path In paths
Console.WriteLine((ControlChars.Tab & path))
Next path
paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Write)
Console.WriteLine("Write access list after SetPathList = ")
For Each path In paths
Console.WriteLine((ControlChars.Tab & path))
Next path
Dim pathList() As String
pathList = fileIOPerm1.GetPathList(FileIOPermissionAccess.AllAccess)
Catch e As ArgumentException
' FileIOPermissionAccess.AllAccess can not be used as a parameter for GetPathList.
Console.WriteLine(("An ArgumentException occurred as a result of using AllAccess. " & "This property cannot be used as a parameter in GetPathList " & "because it represents more than one type of file variable access. : " & ControlChars.Lf & e.ToString()))
End Try
Return True
End Function 'SetGetPathListDemo
Uwagi
Użyj tej metody, aby uzyskać stan bieżącego uprawnienia. Aby uzyskać stan obu metod Read i Write dostępu, wymagane są dwa wywołania tej metody.
Uwaga
Parametr access jest ograniczony do wartości FileIOPermissionAccess, które reprezentują pojedyncze typy dostępu do plików. Te wartości to Read, Write, Appendi PathDiscovery. Dopuszczalne wartości access nie obejmują NoAccess elementów i AllAccess, które nie reprezentują pojedynczych typów dostępu do plików.