DirectoryInfo.Delete 方法

定义

命名空间:

System.IO

程序集:

System.Runtime.dll

从路径中删除 DirectoryInfo 及其内容。

重载

Delete()	如果此 DirectoryInfo 为空则将其删除。
Delete(Boolean)	删除 DirectoryInfo 的此实例，指定是否删除子目录和文件。

Delete()

Source:

DirectoryInfo.cs

如果此 DirectoryInfo 为空则将其删除。

public:
 override void Delete();

public override void Delete ();

override this.Delete : unit -> unit

Public Overrides Sub Delete ()

例外

UnauthorizedAccessException

该目录包含一个只读文件。

DirectoryNotFoundException

此 DirectoryInfo 对象描述的目录不存在或找不到。

IOException

目录不为空。

- 或 -

该目录是应用程序的当前工作目录。

- 或 -

对于目录有打开句柄，并且操作系统是 Windows XP 或更早版本。 开放句柄可能产生自枚举目录。 有关详细信息，请参阅如何：枚举目录和文件。

SecurityException

调用方没有所要求的权限。

示例

如果尝试删除不为空的目录，以下示例将引发异常。

using namespace System;
using namespace System::IO;
int main()
{
   
   // Specify the directories you want to manipulate.
   DirectoryInfo^ di1 = gcnew DirectoryInfo( "c:\\MyDir" );
   try
   {
      
      // Create the directories.
      di1->Create();
      di1->CreateSubdirectory( "temp" );
      
      //This operation will not be allowed because there are subdirectories.
      Console::WriteLine( "I am about to attempt to delete {0}", di1->Name );
      di1->Delete();
      Console::WriteLine( "The Delete operation was successful, which was unexpected." );
   }
   catch ( Exception^ ) 
   {
      Console::WriteLine( "The Delete operation failed as expected." );
   }

}

using System;
using System.IO;

class Test
{
    public static void Main()
    {
        // Specify the directories you want to manipulate.
        DirectoryInfo di1 = new DirectoryInfo(@"c:\MyDir");

        try
        {
            // Create the directories.
            di1.Create();
            di1.CreateSubdirectory("temp");

            //This operation will not be allowed because there are subdirectories.
            Console.WriteLine("I am about to attempt to delete {0}", di1.Name);
            di1.Delete();
            Console.WriteLine("The Delete operation was successful, which was unexpected.");
        }
        catch (Exception)
        {
            Console.WriteLine("The Delete operation failed as expected.");
        }
        finally {}
    }
}

open System.IO

// Specify the directories you want to manipulate.
let di1 = DirectoryInfo @"c:\MyDir"

try
    // Create the directories.
    di1.Create()
    di1.CreateSubdirectory "temp" |> ignore

    //This operation will not be allowed because there are subdirectories.
    printfn $"I am about to attempt to delete {di1.Name}"
    di1.Delete()
    printfn "The Delete operation was successful, which was unexpected."
with _ ->
    printfn "The Delete operation failed as expected."

Imports System.IO

Public Class Test
    Public Shared Sub Main()
        ' Specify the directories you want to manipulate.
        Dim di1 As DirectoryInfo = New DirectoryInfo("c:\MyDir")

        Try
            ' Create the directories.
            di1.Create()
            di1.CreateSubdirectory("temp")

            'This operation will not be allowed because there are subdirectories.
            Console.WriteLine("I am about to attempt to delete {0}", di1.Name)
            di1.Delete()
            Console.WriteLine("The Delete operation was successful, which was unexpected.")

        Catch
            Console.WriteLine("The Delete operation was unsuccessful, as expected.")
        End Try
    End Sub
End Class

注解

有关常见 I/O 任务的列表，请参阅 常见 I/O 任务。

另请参阅

• 文件和流 I/O
• 如何：从文件中读取文本
• 如何：将文本写入文件

Delete(Boolean)

Source:

DirectoryInfo.cs

删除 DirectoryInfo 的此实例，指定是否删除子目录和文件。

public:
 void Delete(bool recursive);

public void Delete (bool recursive);

override this.Delete : bool -> unit

Public Sub Delete (recursive As Boolean)

参数

recursive

Boolean

如果要删除此目录，则为 true；否则为 false。

例外

UnauthorizedAccessException

该目录包含一个只读文件。

DirectoryNotFoundException

此 DirectoryInfo 对象描述的目录不存在或找不到。

IOException

目录为只读。

- 或 -

此目录包含一个或多个文件或子目录，且 recursive 为 false。

- 或 -

该目录是应用程序的当前工作目录。

- 或 -

对于目录或其文件之一有打开句柄，并且操作系统是 Windows XP 或更早版本。 枚举目录和文件可能会导致此开放句柄出现。 有关详细信息，请参阅如何：枚举目录和文件。

SecurityException

调用方没有所要求的权限。

示例

以下示例演示如何删除目录。 由于删除了目录，因此请首先注释掉该 Delete 行以测试该目录是否存在。 然后取消注释同一行代码，以测试目录是否已成功删除。

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" );
   
   // Process that directory as required.
   // ...
   // Delete the subdirectory. The true indicates that if subdirectories
   // or files are in this directory, they are to be deleted as well.
   dis->Delete( true );
   
   // Delete the directory.
   di->Delete( true );
}

using System;
using System.IO;

public class DeleteTest
{
    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");

        // Process that directory as required.
        // ...

        // Delete the subdirectory. The true indicates that if subdirectories
        // or files are in this directory, they are to be deleted as well.
        dis.Delete(true);

        // Delete the directory.
        di.Delete(true);
    }
}

open System.IO

// Make a reference to a directory.
let di = DirectoryInfo "TempDir"

// Create the directory only if it does not already exist.
if not di.Exists then
    di.Create()

// Create a subdirectory in the directory just created.
let dis = di.CreateSubdirectory "SubDir"

// Process that directory as required.
// ...

// Delete the subdirectory. The true indicates that if subdirectories
// or files are in this directory, they are to be deleted as well.
dis.Delete true

// Delete the directory.
di.Delete true

Imports System.IO

Public Class DeleteTest

    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

        Dim dis As DirectoryInfo = di.CreateSubdirectory("SubDir")
        ' Create a subdirectory in the directory just created.

        ' Process that directory as required.
        ' ...

        ' Delete the subdirectory. The true indicates that if subdirectories
        ' or files are in this directory, they are to be deleted as well.
        dis.Delete(True)

        ' Delete the directory.
        di.Delete(True)
    End Sub
End Class

注解

DirectoryInfo如果没有文件或子目录，则即使 recursive 为 false，DirectoryInfo此方法也会删除 。 尝试删除 DirectoryInfo 当 为 false 时recursive不为空的 会IOException引发 。

有关常见 I/O 任务的列表，请参阅 常见 I/O 任务。

另请参阅

• 文件和流 I/O
• 如何：从文件中读取文本
• 如何：将文本写入文件