DirectoryInfo.Parent 属性
获取指定子目录的父目录。
**命名空间:**System.IO
**程序集:**mscorlib(在 mscorlib.dll 中)
语法
声明
Public ReadOnly Property Parent As DirectoryInfo
用法
Dim instance As DirectoryInfo
Dim value As DirectoryInfo
value = instance.Parent
public DirectoryInfo Parent { get; }
public:
property DirectoryInfo^ Parent {
DirectoryInfo^ get ();
}
/** @property */
public DirectoryInfo get_Parent ()
public function get Parent () : DirectoryInfo
属性值
父目录,或者如果路径为空或如果文件路径表示根(如“\”、“C:”或 *“\\server\share”),则为 空引用(在 Visual Basic 中为 Nothing)。
异常
异常类型 | 条件 |
---|---|
调用方没有所要求的权限。 |
备注
下表列出了其他典型或相关的 I/O 任务的示例。
若要执行此操作... |
请参见本主题中的示例... |
---|---|
重命名或移动目录。 |
|
删除目录。 |
|
创建目录。 |
|
创建子目录。 |
|
查看目录中的文件。 |
|
查看目录的子目录。 |
|
查看目录中的所有文件和所有子目录。 |
|
查看目录大小。 |
|
确定文件是否存在。 |
|
按大小对目录中的文件排序。 |
GetFileSystemInfos |
确定目录是否存在。 |
示例
下面的示例演示了引用指定目录的父目录的方法。
Imports System
Imports System.IO
Public Class MoveToTest
Public Shared Sub Main()
' Make a reference to a directory.
Dim di As New DirectoryInfo("TempDir")
' Create the directory only if it does not already exist.
If di.Exists = False Then
di.Create()
End If
' Create a subdirectory in the directory just created.
Dim dis As DirectoryInfo = di.CreateSubdirectory("SubDir")
' Get a reference to the parent directory of the subdirectory you just made.
Dim parentDir As DirectoryInfo = dis.Parent
Console.WriteLine("The parent directory of '{0}' is '{1}'", dis.Name, parentDir.Name)
' Delete the parent directory.
di.Delete(True)
End Sub 'Main
End Class 'MoveToTest
using System;
using System.IO;
public class MoveToTest
{
public static void Main()
{
// Make a reference to a directory.
DirectoryInfo di = new DirectoryInfo("TempDir");
// Create the directory only if it does not already exist.
if (di.Exists == false)
di.Create();
// Create a subdirectory in the directory just created.
DirectoryInfo dis = di.CreateSubdirectory("SubDir");
// Get a reference to the parent directory of the subdirectory you just made.
DirectoryInfo parentDir = dis.Parent;
Console.WriteLine("The parent directory of '{0}' is '{1}'", dis.Name, parentDir.Name);
// Delete the parent directory.
di.Delete(true);
}
}
using namespace System;
using namespace System::IO;
int main()
{
// Make a reference to a directory.
DirectoryInfo^ di = gcnew DirectoryInfo( "TempDir" );
// Create the directory only if it does not already exist.
if ( !di->Exists )
di->Create();
// Create a subdirectory in the directory just created.
DirectoryInfo^ dis = di->CreateSubdirectory( "SubDir" );
// Get a reference to the parent directory of the subdirectory you just made.
DirectoryInfo^ parentDir = dis->Parent;
Console::WriteLine( "The parent directory of '{0}' is '{1}'", dis->Name, parentDir->Name );
// Delete the parent directory.
di->Delete( true );
}
import System.*;
import System.IO.*;
public class MoveToTest
{
public static void main(String[] args)
{
// Make a reference to a directory.
DirectoryInfo di = new DirectoryInfo("TempDir");
// Create the directory only if it does not already exist.
if (di.get_Exists() == false) {
di.Create();
}
// Create a subdirectory in the directory just created.
DirectoryInfo dis = di.CreateSubdirectory("SubDir");
// Get a reference to the parent directory of the
// subdirectory you just made.
DirectoryInfo parentDir = dis.get_Parent();
Console.WriteLine("The parent directory of '{0}' is '{1}'",
dis.get_Name(), parentDir.get_Name());
// Delete the parent directory.
di.Delete(true);
} //main
} //MoveToTest
import System;
import System.IO;
public class MoveToTest {
public static function Main() {
// Make a reference to a directory.
var di : DirectoryInfo = new DirectoryInfo("TempDir");
// Create the directory only if it does not already exist.
if (di.Exists == false)
di.Create();
// Create a subdirectory in the directory just created.
var dis : DirectoryInfo = di.CreateSubdirectory("SubDir");
// Get a reference to the parent directory of the subdirectory you just made.
var parentDir : DirectoryInfo = dis.Parent;
Console.WriteLine("The parent directory of '{0}' is '{1}'", dis.Name, parentDir.Name);
// Delete the parent directory.
di.Delete(true);
}
}
MoveToTest.Main();
.NET Framework 安全性
- FileIOPermission 用于从文件和目录读取以及用于路径访问。关联的枚举:FileIOPermissionAccess.Read、FileIOPermissionAccess.PathDiscovery
平台
Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表,请参见系统要求。
版本信息
.NET Framework
受以下版本支持:2.0、1.1、1.0
.NET Compact Framework
受以下版本支持:2.0、1.0
请参见
参考
DirectoryInfo 类
DirectoryInfo 成员
System.IO 命名空间