SearchOption 列舉

定義

命名空間:
System.IO
組件:
mscorlib.dll, System.IO.FileSystem.dll
組件:
netstandard.dll, System.Runtime.dll
組件:
netstandard.dll, System.IO.FileSystem.dll
組件:
netstandard.dll, System.IO.FileSystem.dll, System.Runtime.dll
組件:
System.IO.FileSystem.dll
組件:
mscorlib.dll
組件:
netstandard.dll
來源:
SearchOption.cs
來源:
SearchOption.cs
來源:
ThreadStateException.cs

指定是否要搜尋目前目錄，或目前目錄和所有子目錄。

public enum class SearchOption
public enum SearchOption
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public enum SearchOption
type SearchOption = 
[<System.Runtime.InteropServices.ComVisible(true)>]
[<System.Serializable>]
type SearchOption = 
Public Enum SearchOption
繼承
Object
ValueType
Enum
SearchOption
屬性
ComVisibleAttribute SerializableAttribute

欄位

名稱 值 Description
TopDirectoryOnly 0

搜尋操作中僅包含目前的目錄。
AllDirectories 1

包含目前目錄及其所有子目錄，進行搜尋操作。 此選項包含重解析點，如已掛載的磁碟機及搜尋中的符號連結。

範例

以下範例列出所有以字母「c」開頭的目錄與檔案，如「c：\」。 在此範例中， TopDirectoryOnly 用來指定只搜尋頂層目錄。

using System;
using System.IO;

class App
{
    public static void Main()
    {
        // Specify the directory you want to manipulate.
        string path = @"c:\";
        string searchPattern = "c*";

        DirectoryInfo di = new DirectoryInfo(path);
        DirectoryInfo[] directories =
            di.GetDirectories(searchPattern, SearchOption.TopDirectoryOnly);

        FileInfo[] files =
            di.GetFiles(searchPattern, SearchOption.TopDirectoryOnly);

        Console.WriteLine(
            "Directories that begin with the letter \"c\" in {0}", path);
        foreach (DirectoryInfo dir in directories)
        {
            Console.WriteLine(
                "{0,-25} {1,25}", dir.FullName, dir.LastWriteTime);
        }

        Console.WriteLine();
        Console.WriteLine(
            "Files that begin with the letter \"c\" in {0}", path);
        foreach (FileInfo file in files)
        {
            Console.WriteLine(
                "{0,-25} {1,25}", file.Name, file.LastWriteTime);
        }
    } // Main()
} // App()

Imports System.IO

Class App
    Public Shared Sub Main()
        ' Specify the directory you want to manipulate.
        Dim path As String = "c:\\"
        Dim searchPattern As String = "c*"

        Dim di As DirectoryInfo = New DirectoryInfo(path)
        Dim directories() As DirectoryInfo = _
            di.GetDirectories(searchPattern, SearchOption.TopDirectoryOnly)

        Dim files() As FileInfo = _
            di.GetFiles(searchPattern, SearchOption.TopDirectoryOnly)

        Console.WriteLine( _
            "Directories that begin with the letter 'c' in {0}", path)
        Dim dir As DirectoryInfo
        For Each dir In directories
            Console.WriteLine( _
                "{0,-25} {1,25}", dir.FullName, dir.LastWriteTime)
        Next dir

        Console.WriteLine()
        Console.WriteLine( _
            "Files that begin with the letter 'c' in {0}", path)
        Dim file As FileInfo
        For Each file In files
            Console.WriteLine( _
                "{0,-25} {1,25}", file.Name, file.LastWriteTime)
        Next file
    End Sub
End Class

備註

如果你在搜尋中選擇 AllDirectories ，且目錄結構包含一個連結會產生迴圈，搜尋操作就會進入無限迴圈。

適用於