1  PRotected void ByteToString_Click(object sender, EventArgs e) 2         { 3  4  5             string content = this.txtContent.Text.ToString(); 6  7             if (string.IsNullOrEmpty(content)) 8             { 9                 return;10             }11 12             //string 轉為byte數組13             byte[] array = Encoding.UTF8.GetBytes(content);14 15             //將byte數組轉為string16             string result = Encoding.UTF8.GetString(array);17 18 19             Response.Write(result);20 21 22         }23         //利用byte[]數組寫入文件24         protected void writerFile_Click(object sender, EventArgs e)25         {26 27             string content = this.txtContent.Text.ToString();28 29             if (string.IsNullOrEmpty(content))30             {31                 return;32             }33 34             //將string轉為byte數組35             byte[] array = Encoding.UTF8.GetBytes(content);36 37             string path = Server.MapPath("/test.txt");38             //創建一個文件流39             FileStream fs = new FileStream(path, FileMode.Create);40 41             //將byte數組寫入文件中42             fs.Write(array, 0, array.Length);43             //所有流類型都要關閉流，否則會出現內存泄露問題44             fs.Close();45 46             Response.Write("保存文件成功");47 48 49         }50         //利用byte[]數組讀取文件51         protected void readFile_Click(object sender, EventArgs e)52         {53             string path = Server.MapPath("/test.txt");54 55             FileStream fs = new FileStream(path, FileMode.Open);56 57             //獲取文件大小58             long size = fs.Length;59 60             byte[] array = new byte[size];61 62             //將文件讀到byte數組中63             fs.Read(array, 0, array.Length);64 65             fs.Close();66 67             //將byte數組轉為string68             string result = Encoding.UTF8.GetString(array);69 70 71             Response.Write(result);72 73             74 75         }