Filestream reads or writes files, and filestream reads and writes

Filestream reads or writes files, and filestream reads and writes

1 using System. IO; // reference System. IO 2 namespace filestream 3 {4 public partial class Form1: Form 5 {6 public Form1 () 7 {8 InitializeComponent (); 9} 10 11 private void btnWrite_Click (object sender, eventArgs e) 12 {13 SaveFileDialog sfd = new SaveFileDialog (); 14 15 sfd. filter = "text file | *. txt | c # file | *. cs "; 16 17 if (sfd. showDialog () = System. windows. forms. dialogResult. OK) 18 {19 txtPath. text = sfd. fileName; // saved path 20 using (FileStream fs = new FileStream (txtPath. text, FileMode. create) 21 {22 string txt = txtContent. text; 23 byte [] buffer = Encoding. UTF8.GetBytes (txt); 24 fs. write (buffer, 0, buffer. length); 25} 26} 27} 28 29 private void btnRead_Click (object sender, EventArgs e) 30 {31 OpenFileDialog ofd = new OpenFileDialog (); 32 ofd. filter = "text file | *. txt "; 33 if (ofd. showDialog () = System. windows. forms. dialogResult. OK) 34 {35 txtPath. text = ofd. fileName; 36 using (FileStream fs = new FileStream (txtPath. text, FileMode. open) 37 {38 // byte [] buffer = new byte [fs. length]; 39 // fs. read (buffer, 0, buffer. length); 40 41 // string msg = Encoding. UTF8.GetString (buffer); 42 // txtContent. text = msg; 43 44 45 using (StreamReader sr = new StreamReader (fs, Encoding. UTF8) 46 {47 string msg = sr. readToEnd (); 48 txtContent. text = msg; 49} 50} 51} 52} 53} 54}