Class File

Namespace

CSharpToJavaScript.APIs.JS

Assembly

CSharpToJavaScript.dll

The File interface provides information about files and allows JavaScript in a web page to access their content.

[Value("File")]
public class File : Blob

Inheritance

object

Blob

File

Inherited Members

Blob.Slice(long, long, string)

Blob.Stream()

Blob.Text()

Blob.ArrayBuffer()

Blob.Bytes()

Blob.Size

Blob.Type

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Remarks

File objects are generally retrieved from a FileList object returned as a result of a user selecting files using the {{HTMLElement("input")}} element, or from a drag and drop operation's DataTransfer object.

A File object is a specific kind of Blob, and can be used in any context that a Blob can. In particular, the following APIs accept both Blobs and File objects:

See Using files from web applications for more information and examples.

-Using files from web applications
-FileReader

See also on MDN

Constructors

File()

public File()

File(List<Union44>, string, FilePropertyBag)

The File() constructor creates a new File
object instance.

public File(List<Union44> fileBits, string fileName, FilePropertyBag options = null)

Parameters

fileBits List<Union44>

fileName string

options FilePropertyBag

Remarks

-FileReader
-Blob

See also on MDN

Properties

LastModified

The lastModified read-only property of the File interface provides the
last modified date of the file as the number of milliseconds since the Unix
epoch (January 1, 1970 at midnight). Files without a known last modified date return the
current date.

[Value("lastModified")]
public long LastModified { get; }

Property Value

long

A number that represents the number of milliseconds since the Unix epoch.

Remarks

-File

See also on MDN

Name

The name read-only property of the File interface returns the name of the file represented by a File object. For security
reasons, the path is excluded from this property.

[Value("name")]
public string Name { get; }

Property Value

string

A string, containing the name of the file without path, such as &quot;My Resume.rtf&quot;.

Remarks

-Using files from web applications

See also on MDN

WebkitRelativePath

The webkitRelativePath read-only property of the File interface
contains a string which specifies the file&apos;s path relative to the
directory selected by the user in an input element with its
webkitdirectory attribute set.

[Value("webkitRelativePath")]
public string WebkitRelativePath { get; }

Property Value

string

A string containing the path of the file relative to the ancestor
directory the user selected.

Remarks

-File and Directory Entries API
-WebkitEntries
-Webkitdirectory

See also on MDN