Article
11/18/2011

DirectoryInfo.EnumerateFileSystemInfos Method (String, SearchOption)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

When it is called by trusted applications, returns an enumerable collection of file system information that matches a specified search pattern and search subdirectory option.

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

Syntax

'Declaration
Public Function EnumerateFileSystemInfos ( _
    searchPattern As String, _
    searchOption As SearchOption _
) As IEnumerable(Of FileSystemInfo)

public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos(
    string searchPattern,
    SearchOption searchOption
)

Parameters

searchPattern
Type: System.String
The search string. The default pattern is "*", which returns all files or directories.

searchOption
Type: System.IO.SearchOption
One of the enumeration values that specifies whether the search operation should include only the current directory or all subdirectories. The default value is TopDirectoryOnly.

Return Value

Type: System.Collections.Generic.IEnumerable<FileSystemInfo>
An enumerable collection of file system information objects that matches searchPattern and searchOption.

Exceptions

Exception	Condition
ArgumentNullException	searchPattern is nulla null reference (Nothing in Visual Basic).
ArgumentOutOfRangeException	searchOption is not a valid SearchOption value.
DirectoryNotFoundException	The path encapsulated in the FileSystemInfo object is invalid (for example, it is on an unmapped drive).
SecurityException	The caller does not have the required permission.

Remarks

The following wildcard specifiers are permitted in the searchPattern parameter.

Wildcard character	Description
*	Zero or more characters.
?	Exactly one character.

Version Information

Silverlight

Supported in: 5, 4

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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