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{
String str ="Ãû³Æ£º"+ this.textBox1.Text.Trim() +" ÃÜÂ룺"+ this.textBox2.Text.Trim()+"\r\n";
byte [] bt = System.Text.Encoding.Default.GetBytes(str);
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using (FileStream fs = new FileStream("file.postfix", FileMode.Append, FileAccess.Write, FileShare.ReadWrite))
{
using (BinaryWriter writer = new BinaryWriter(fs))
{
//
foreach (byte b in bt)
{
writer.Write(b.ToString());
} &nb
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