The FileMode and FileAccess : FileStream : File Directory Stream C# Examples

The FileMode and FileAccess

Value
Description


FileMode.Append
append to the end of file.


FileMode.Create
create a new output file. Any preexisting file by the same name will be destroyed.


FileMode.CreateNew
create a new output file. The file must not already exist.


FileMode.Open
open a preexisting file.


FileMode.OpenOrCreate
open a file if it exists, or create the file if it does not already exist.


FileMode.Truncate
open a preexisting file, but reduce its length to zero.



If you want to restrict access to just reading or just writing, use this constructor:




    
FileStream(string  filename,  FileMode  mode,  FileAccess  how)
    
   
  
   


'how' determines how the file can be accessed.
'how' must be one of:
FileAccess.Read
FileAccess.Write
FileAccess.ReadWrite

Related in same category :
• Open a file with exception handling
• Demonstrate random access file
• Read every other value using FileSeek
• Open an existing file
• Read file stream on a per byte basis
• Read file stream as an array of bytes
• Write data to file through FileStream per byte
• Write data to file through FileStream via an array
• Reset internal position for a FileStream
• Write/read bytes using FileStream
• Use FileStream to read a file selected from OpenFileDialog
• Use FileStream to read a file byte by byte
• Use FileStream to write/read a file byte by byte
• Is a stream seekable
• Binary File Reading through FileStream