File size system.io

Creates a file symbolic link identified by path that points to pathToTarget. Creates or opens a file for writing UTF-8 encoded text. If the file already exists, its contents are overwritten. Decrypts a file that was encrypted by the current account using the Encrypt String method.

Gets a FileSecurity object that encapsulates the access control list ACL entries for a specified file. Gets a FileSecurity object that encapsulates the specified type of access control list ACL entries for a particular file. Gets the FileAttributes of the file on the path. Returns the creation date and time, in coordinated universal time UTC , of the specified file or directory. Returns the date and time, in coordinated universal time UTC , that the specified file or directory was last accessed.

Returns the date and time, in coordinated universal time UTC , that the specified file or directory was last written to. Moves a specified file to a new location, providing the options to specify a new file name and to overwrite the destination file if it already exists. Opens a FileStream on the specified path, with the specified mode and access with no sharing.

Asynchronously opens a binary file, reads the contents of the file into a byte array, and then closes the file. Asynchronously opens a text file, reads all lines of the file with the specified encoding, and then closes the file. Asynchronously opens a text file, reads all text in the file with the specified encoding, and then closes the file.

Replaces the contents of a specified file with the contents of another file, deleting the original file, and creating a backup of the replaced file. Replaces the contents of a specified file with the contents of another file, deleting the original file, and creating a backup of the replaced file and optionally ignores merge errors.

Sets the specified FileAttributes of the file on the specified path. Sets the date and time, in coordinated universal time UTC , that the specified file was last accessed. Sets the date and time, in coordinated universal time UTC , that the specified file was last written to. Creates a new file, writes the specified byte array to the file, and then closes the file.

If the target file already exists, it is overwritten. Asynchronously creates a new file, writes the specified byte array to the file, and then closes the file. Creates a new file by using the specified encoding, writes a collection of strings to the file, and then closes the file.

Creates a new file, writes the specified string array to the file by using the specified encoding, and then closes the file. Asynchronously creates a new file, writes the specified lines to the file, and then closes the file. Asynchronously creates a new file, write the specified lines to the file by using the specified encoding, and then closes the file. Creates a new file, writes the specified string to the file, and then closes the file.

Creates a new file, writes the specified string to the file using the specified encoding, and then closes the file. Asynchronously creates a new file, writes the specified string to the file, and then closes the file.

Asynchronously creates a new file, writes the specified string to the file using the specified encoding, and then closes the file. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode.

File Class Reference Is this page helpful? Please rate your experience Yes No. Any additional feedback? Namespace: System. IO Assemblies: mscorlib. Note In members that accept a path as an input string, that path must be well-formed or an exception is raised.

In this article. Specifies whether the contents of an existing file are preserved or overwritten, and whether requests to create an existing file cause an exception.

AppendAllText String, String. AppendText String. Copy String, String. Don't forget to import System. IO and System. Text namespaces in your project.

Length; Console. The following code example uses a FileInfo class to create an object by passing a complete filename. The FileInfo class provides properties to get information about a file such as file name, size, full path, extension, directory name, is read only, when the file was created and last updated.

Note: Make sure to replace the file name with your file name. GetBytes "New file. Write txt, 0, txt. GetBytes "Author Mahesh Chand" ; fs. Write author, 0, author. Name; Console.

FullName; Console. EnsureCapacity Int32 value at System. Write Byte[] buffer, Int32 offset, Int32 count at System. First, we need to create a new storage account to save our file stream to. The last step in the Azure portal is to open the Blobs blade and create a new container. Back to the Azure portal. Wrapping Up By avoiding using local disk or memory on our cloud servers, we can handle files of any size with less worry about scalability of our resources and the dreaded Int32 overflow.

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