DirectoryInfo.Delete 方法

定義

命名空間:

System.IO

組件:

System.Runtime.dll

從路徑刪除 DirectoryInfo 和其內容。

多載

Delete()	如果這個 DirectoryInfo 是空的，則將它刪除。
Delete(Boolean)	刪除 DirectoryInfo 的這個執行個體，並指定是否刪除子目錄和檔案。

Delete()

來源:

DirectoryInfo.cs

如果這個 DirectoryInfo 是空的，則將它刪除。

public:
 override void Delete();

public override void Delete ();

override this.Delete : unit -> unit

Public Overrides Sub Delete ()

例外狀況

UnauthorizedAccessException

目錄包含唯讀檔案。

DirectoryNotFoundException

這個 DirectoryInfo 物件描述的目錄不存在，或找不到該目錄。

IOException

目錄不是空的。

-或-

目錄是應用程式目前的工作目錄。

-或-

此目錄具有開啟控制代碼，而且作業系統是 Windows XP 或先前的版本。 這個開啟控制代碼可能是列舉目錄所產生的結果。 如需詳細資訊，請參閱如何：列舉目錄和檔案。

SecurityException

呼叫端沒有必要的權限。

範例

如果您嘗試刪除不是空的目錄，下列範例會擲回例外狀況。

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

備註

如需一般 I/O 工作的清單，請參閱 一般 I/O 工作。

另請參閱

• 檔案和資料流 I/O
• 作法：讀取檔案中的文字
• 作法：將文字寫入檔案

Delete(Boolean)

來源:

DirectoryInfo.cs

刪除 DirectoryInfo 的這個執行個體，並指定是否刪除子目錄和檔案。

public:
 void Delete(bool recursive);

public void Delete (bool recursive);

override this.Delete : bool -> unit

Public Sub Delete (recursive As Boolean)

參數

recursive

Boolean

若要刪除這個目錄、其子目錄和所有檔案，則為 true，否則為 false。

例外狀況

UnauthorizedAccessException

目錄包含唯讀檔案。

DirectoryNotFoundException

這個 DirectoryInfo 物件描述的目錄不存在，或找不到該目錄。

IOException

目錄是唯讀的。

-或-

目錄包含一或多個檔案或子目錄，並且 recursive 是 false。

-或-

目錄是應用程式目前的工作目錄。

-或-

此目錄或其中一個檔案具有開啟控制代碼，而且作業系統是 Windows XP 或先前的版本。 這個開啟的控制代碼可能是列舉目錄和檔案所產生的結果。 如需詳細資訊，請參閱如何：列舉目錄和檔案。

SecurityException

呼叫端沒有必要的權限。

範例

下列範例示範如何刪除目錄。 因為目錄已移除，所以請先批註出行 Delete ，以測試目錄是否存在。 然後取消批註相同的程式程式碼，以測試已成功移除目錄。

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

備註

DirectoryInfo如果 沒有檔案或子目錄，則即使 recursive 為 false ，這個方法也會 DirectoryInfo 刪除 。 嘗試刪除 DirectoryInfo 擲回 時 recursivefalse 不是空的 IOException 。

如需一般 I/O 工作的清單，請參閱 一般 I/O 工作。

另請參閱

• 檔案和資料流 I/O
• 作法：讀取檔案中的文字
• 作法：將文字寫入檔案