Common File Operations (3)

Common File Operations (3)

File class

Namespace: system. Io

Method. The static method is as follows:

Serial number	Function Name	Description
1	Appendalltext	Append the specified string to the file. If the file does not exist, create the file.
2	Appendtext	Create a streamwriter that appends the UTF-8-encoded text to an existing file.
3	Copy	Copy an existing file to a new file.
4	Create	Create a file in the specified path.
5	Createtext	Creates or opens a file that is used to write UTF-8-encoded text.
6	Decrypt	Decrypt the files encrypted by the current account using the encrypt method.
7	Delete	Deletes a specified object. If the specified file does not exist, no exception is thrown.
8	Encrypt	Encrypts a file so that only the account that encrypts the file can decrypt it.
9	Exists	Determines whether the specified file exists.
10	Getaccesscontrol	Obtains a filesecurity object that encapsulates the access control list (ACL) entries of the specified file.
11	Getattributes	Obtain the fileattributes of the file in this path.
12	Getcreationtime	Returns the creation date and time of the specified file or directory.
13	Getcreationtimeutc	Returns the creation date and time of the specified file or directory. The format is Coordinated Universal Time (UTC ).
14	Getlastaccesstime	Returns the date and time of the last access to the specified file or directory.
15	Getlastaccesstimeutc	Returns the date and time of the last access to the specified file or directory. The format is Coordinated Universal Time (UTC ).
16	Getlastwritetime	Returns the date and time when the specified file or directory was last written.
17	Getlastwirtetimeutc	Returns the date and time when the specified file or directory was last written. The format is Coordinated Universal Time (UTC ).
18	Move	Moves the specified file to a new location and provides the option to specify a new file name.
19	Open	Open the filestream in the specified path.
20	Openread	Open an existing file for reading.
21	Opentext	Open an existing UTF-8 encoding text file for reading.
22	Openwrite	Open an existing file for writing.
23	Readallbytes	Open a file, read the file content into a string, and then close the file.
24	Readalllines	Open a text file, read all the lines of the file into a string array, and then close the file.
25	Readalltext	Open a text file, read all the lines of the file into a string, and then close the file.
26	Replace	Replace the content of a specified file with the content of another file. This process deletes the original file and creates a backup of the replaced file.
27	Setaccesscontrol	Applies the access control list (ACL) item described by the filesecurity object to the specified file.
28	Setattributes	Sets the specified fileattributes of the file in the specified path.
29	Setcreationtime	Set the date and time when the file was created.
30	Setcreationtimeutc	Set the date and time when the file is created. The format is Coordinated Universal Time (UTC ).
31	Setlastaccesstime	Set the date and time of the last access to the specified file.
32	Setlastaccesstimeutc	Sets the date and time of the last object to be accessed. The format is Coordinated Universal Time (UTC ).
33	Setlastwritetime	Specifies the date and time when the specified file was last written.
34	Setlastwritetimeutc	Sets the date and time of the last specified file written. The format is Coordinated Universal Time (UTC ).
35	Writeallbytes	Create a new file, write the specified byte array in it, and then close the file. If the target file already exists, rewrite the file.
36	Writealllines	Create a new file, write the specified string in it, and then close the file. If the target file already exists, rewrite the file.
37	Writealltext	Create a new file, write content to the file, and then close the file. If the target file already exists, rewrite the file.