c#保存textbox中的字符串到txt文件中

        /********************** 保存接收按钮 *****************************/

        private void SavetxData_Click(object sender, EventArgs e)

        {

            SaveFileDialog saveFileDialog = new SaveFileDialog();

            saveFileDialog.Filter = "(*.txt)|*.txt|(*.*)|*.*";

            saveFileDialog.FileName = "文件" + DateTime.Now.ToString("yyyyMMddHHmm") + ".txt";

            //将日期时间作为文件名

            if (saveFileDialog.ShowDialog() == DialogResult.OK)

            {

                StreamWriter streamWriter = new StreamWriter(saveFileDialog.FileName, true);

                streamWriter.Write(this.rxtextBox.Text);

                streamWriter.Close();

            }

        }