【原】c# 文件另存为对话框

                Stream myStream;
                SaveFileDialog saveFileDialog1 = new  SaveFileDialog();

                saveFileDialog1.Filter = "txt files   (*.txt)|*.txt";
                saveFileDialog1.FilterIndex = 2;
                saveFileDialog1.RestoreDirectory = true;

                if (saveFileDialog1.ShowDialog() == DialogResult.OK)
                {
                    if ((myStream = saveFileDialog1.OpenFile()) != null)
                    {
                        using (StreamWriter sw = new StreamWriter(myStream))
                        {
                            sw.Write("this is the text");
                        }
                        
                        myStream.Close();
                        MessageBox.Show("Saved");
                    }
                } 

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