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SearchOption Enumeration

Specifies whether to search the current directory, or the current directory and all subdirectories.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

[SerializableAttribute]
[ComVisibleAttribute(true)]
public enum SearchOption

Member nameDescription
TopDirectoryOnlyIncludes only the current directory in a search.
AllDirectoriesIncludes the current directory and all the subdirectories in a search operation. This option includes reparse points like mounted drives and symbolic links in the search.

If you choose AllDirectories in your search and the directory structure contains a link that creates a loop, the search operation enters an infinite loop.

The following code example lists all of the directories and files that begin with the letter "c" in "c:\". In this example, the SearchOption is used to specify not to search all subdirectories.

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()

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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