SaveFileDialog sfD = new SaveFileDialog(); sfD.Filter = "txt(*.txt)|*.txt|All File(*.*)|*.*"; sfD.FilterIndex = 2; sfD.RestoreDirectory = true; if (sfD.ShowDialog() == DialogResult.OK) { string filestr = ""; foreach (string str in sfD.FileNames) { filestr = str; } FileInfo fileinfo = new FileInfo(Application.ExecutablePath); FileStream fs = new FileStream(filestr, FileMode.Create); StreamWriter ..

FileStream fs=new FileStream(@"d:\test.txt",FileMode.Append,FileAccess.Write); StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8); sw.Write(textBox1.Text); sw.Flush(); sw.Close(); fs.Close(); 같이 하면 된다..!! 가끔 필요할때 써야지!!