C # Two Methods for reading and writing txt files

1. Add a namespace

System. IO;

System. Text;

2. File Reading

(1). Use the FileStream class to read files, convert it to a char array, and then output.

[] ByData = [[] charData = [= FileStream (,); Decoder d =, byData. Length, charData,

(2). Use StreamReader to read the file and then output one row at a time.

Read (= (line = sr. ReadLine ())! =

3. File writing
(1). Use the FileStream class to create a file and then write the data to the file.

= FileStream ([] data = System. Text. Encoding. Default. GetBytes (fs. Write (data,

(2). Use the FileStream class to create a file and the StreamWriter class to write data to the file.

Write (= sw. Write (

The preceding figure shows how to read and write txt text files.