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DirectoryInfo Class

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

Exposes instance methods for creating, moving, and enumerating through directories and subdirectories. This class cannot be inherited.

Inheritance Hierarchy

System.Object
  System.IO.FileSystemInfo
    System.IO.DirectoryInfo

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

Syntax

'Declaration
<ComVisibleAttribute(True)> _
Public NotInheritable Class DirectoryInfo _
    Inherits FileSystemInfo
[ComVisibleAttribute(true)]
public sealed class DirectoryInfo : FileSystemInfo

The DirectoryInfo type exposes the following members.

Constructors

  Name Description
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 DirectoryInfo When it is called by trusted applications, initializes a new instance of the DirectoryInfo class. .

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Properties

  Name Description
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Attributes When called by trusted applications, gets or sets the FileAttributes of the current FileSystemInfo. (Inherited from FileSystemInfo.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 CreationTime When called by trusted applications, gets or sets the creation time of the current FileSystemInfo object. (Inherited from FileSystemInfo.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Exists Gets a value indicating whether the directory exists. (Overrides FileSystemInfo.Exists.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Extension Gets the string representing the extension part of the file. (Inherited from FileSystemInfo.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 FullName When called by trusted applications, gets the full path of the directory or file. (Inherited from FileSystemInfo.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 LastAccessTime When called by trusted applications, gets or sets the time the current file or directory was last accessed. (Inherited from FileSystemInfo.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 LastWriteTime When called by trusted applications, gets or sets the time when the current file or directory was last written to. (Inherited from FileSystemInfo.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Name Gets the name of this DirectoryInfo instance. (Overrides FileSystemInfo.Name.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Parent When it is called by trusted applications, gets the parent directory of a specified subdirectory.
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Root When it is called by trusted applications, gets the root portion of a path.

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Methods

  Name Description
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Create When it is called by trusted applications, creates a directory.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 CreateSubdirectory When it is called by trusted applications, creates a subdirectory or subdirectories on the specified path.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Delete() When it is called by trusted applications, deletes this DirectoryInfo if it is empty. (Overrides FileSystemInfo.Delete().)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Delete(Boolean) When it is called by trusted applications, deletes this instance of a DirectoryInfo, specifying whether to delete subdirectories and files.
Public method EnumerateDirectories() When it is called by trusted applications, returns an enumerable collection of directory information in the current directory.
Public method EnumerateDirectories(String) When it is called by trusted applications, returns an enumerable collection of directory information that matches a specified search pattern.
Public method EnumerateDirectories(String, SearchOption) When it is called by trusted applications, returns an enumerable collection of directory information that matches a specified search pattern and search subdirectory option.
Public method EnumerateFiles() When it is called by trusted applications, returns an enumerable collection of file information in the current directory.
Public method EnumerateFiles(String) When it is called by trusted applications, returns an enumerable collection of file information that matches a search pattern.
Public method EnumerateFiles(String, SearchOption) When it is called by trusted applications, returns an enumerable collection of file information that matches a specified search pattern and search subdirectory option.
Public method EnumerateFileSystemInfos() When it is called by trusted applications, returns an enumerable collection of file system information in the current directory.
Public method EnumerateFileSystemInfos(String) When it is called by trusted applications, returns an enumerable collection of file system information that matches a specified search pattern.
Public method EnumerateFileSystemInfos(String, SearchOption) 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.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetDirectories() Security Critical. Returns the subdirectories of the current directory.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetDirectories(String) Security Critical. Returns an array of directories in the current DirectoryInfo matching the given search criteria.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetFiles() Security Critical. Returns a file list from the current directory.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetFiles(String) Security Critical. Returns a file list from the current directory matching the given searchPattern.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetFileSystemInfos() Security Critical. Returns an array of strongly typed FileSystemInfo entries representing all the files and subdirectories in a directory.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetFileSystemInfos(String) Security Critical. Retrieves an array of strongly typed FileSystemInfo objects representing the files and subdirectories matching the specified search criteria.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetType Gets the Type of the current instance. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 MoveTo When it is called by trusted applications, moves a DirectoryInfo instance and its contents to a new path.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Refresh Refreshes the state of the object. (Inherited from FileSystemInfo.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToString Returns the original path that was passed by the user. (Overrides Object.ToString().)

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Fields

  Name Description
Protected fieldSupported by Silverlight for Windows PhoneSupported by Xbox 360 FullPath Infrastructure. Represents the fully qualified path of the directory or file. (Inherited from FileSystemInfo.)
Protected fieldSupported by Silverlight for Windows PhoneSupported by Xbox 360 OriginalPath Infrastructure. The path originally specified by the user, whether relative or absolute. (Inherited from FileSystemInfo.)

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Remarks

Platform Notes

Silverlight for Windows Phone Silverlight for Windows Phone

This type is present to support the .NET Compact Framework infrastructure in Silverlight for Windows Phone, and it is not intended to be used in your application code.

Examples

The following example displays an image picked at random from the user's My Pictures folder. It uses the DirectoryInfo class to obtain an enumerable collection of FileInfo objects that represent files that have a .jpg or .png extension. That collection is used to construct a List<T> collection so that its index can be used to select a file that corresponds to the random number.

The example then creates a bitmap image by using the FileStream class and sets it as the source for an Image control (named MyImage).

For example code and information about how to create an application that runs outside the browser, see Out-of-Browser Support.

Private Sub LoadImage()

    If Application.Current.HasElevatedPermissions Then
        Dim di As New DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.MyPictures))

        Dim files = From f In di.EnumerateFiles() _
            Where f.Extension.ToLower() = ".jpg" OrElse f.Extension = ".png" _
            Select f

        Dim max As Integer = files.Count() + 1

        Dim rnd As New Random()
        Dim r As Integer = rnd.[Next](0, max)

        Dim pics As New List(Of FileInfo)(files)

        Dim randpic As String = pics(r).FullName

        Dim img As New BitmapImage()
        img.SetSource(New FileStream(randpic, FileMode.Open))


        MyImage.Source = img
    End If
End Sub
private void LoadImage()
{

    if (Application.Current.HasElevatedPermissions)
    {
        DirectoryInfo di = new DirectoryInfo(Environment.GetFolderPath(
           Environment.SpecialFolder.MyPictures));

        var files = from f in di.EnumerateFiles()
                    where f.Extension.ToLower() == ".jpg" || 
                        f.Extension == ".png"
                    select f;

        int max = files.Count() + 1;

        Random rnd = new Random();
        int r = rnd.Next(0, max);

        List<FileInfo> pics = new List<FileInfo>(files);

        string randpic = pics[r].FullName;

        BitmapImage img = new BitmapImage();
        img.SetSource(new FileStream(randpic, FileMode.Open));

        MyImage.Source = img;

    }
}

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

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

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.