程序代码：

 public Form1()
        {
            InitializeComponent();
            button1.Text = System.Environment.CurrentDirectory;//

        }

        private void bttOpen_Click(object sender, EventArgs e)
        {
            openFileDialog1.ShowDialog();
        }

        private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
        {
            tbDataFile.Text = openFileDialog1.FileName;
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            if (tbDataFile.Text.Trim() == "")
            {
                MessageBox.Show("请选择数据文件的路径。");
            }
            else
            {
                FileStream fs = new FileStream("Access.ini", FileMode.Create,FileAccess.Write);//创建写入文件
//////////////////////////这样文件就穿件在openFileDialog1选择的那个文件同目录下了