SearchOption Enum
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Specifies whether to search the current directory, or the current directory and all subdirectories.
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
- Inheritance
- Attributes
Name | Value | Description |
---|---|---|
TopDirectoryOnly | 0 | Includes only the current directory in a search operation. |
AllDirectories | 1 | Includes the current directory and all its subdirectories in a search operation. This option includes reparse points such as mounted drives and symbolic links in the search. |
The following example lists all the directories and files that begin with the letter "c", as in "c:\". In this example, TopDirectoryOnly is used to specify that only the top-level directory should be searched.
using namespace System;
using namespace System::IO;
ref class App
{
public:
static void Main()
{
// Specify the directory you want to manipulate.
String^ path = "c:\\";
String^ searchPattern = "c*";
DirectoryInfo^ di = gcnew DirectoryInfo(path);
array<DirectoryInfo^>^ directories =
di->GetDirectories(searchPattern, SearchOption::TopDirectoryOnly);
array<FileInfo^>^ files =
di->GetFiles(searchPattern, SearchOption::TopDirectoryOnly);
Console::WriteLine(
"Directories that begin with the letter \"c\" in {0}", path);
for each (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);
for each (FileInfo^ file in files)
{
Console::WriteLine(
"{0,-25} {1,25}", file->Name, file->LastWriteTime);
}
} // Main()
}; // App()
int main()
{
App::Main();
}
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
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.
Produkt | Versjoner |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
UWP | 10.0 |
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