private void sbtnsb_Click(object sender, EventArgs e)        {            try            {                OpenFileDialog ofd = new OpenFileDialog();                ofd.Filter = "导入文件包(*.bak)|*.bak";//扩展名                ofd.FileName = "导入的文件包名称";                if (ofd.ShowDialog() == DialogResult.OK)                {                    string savePath = System.AppDomain.CurrentDomain.BaseDirectory + "data\\reportData\\";//要导出文件的路径                    if (!File.Exists(savePath))                    {                        string saveName = ofd.FileName.Substring(ofd.FileName.LastIndexOf("\\") + 1, ((ofd.FileName.IndexOf(".bak") - 1) - ofd.FileName.LastIndexOf("\\")));                        string dataPath = savePath + saveName + ".mdb";//文件地址                        string dataName = saveName + ".mdb";//文件名                        File.Copy(ofd.FileNames[0], dataPath, true);            MessageBox.Show("导入成功！");                    }                }            }            catch (Exception ex)            {                MessageBox.Show("导入.bak文件错误信息：" + ex.Message);            }        }

private void sbtndc_Click(object sender, EventArgs e)        {            try            {                SaveFileDialog sfd = new SaveFileDialog();                sfd.Filter = "导出文件包(*.baks)|*.baks";//扩展名                sfd.FileName = "这是导出的文件包";//导出文件包文件名                if (sfd.ShowDialog() == DialogResult.OK)                {                    string dataPath = System.AppDomain.CurrentDomain.BaseDirectory + "data\\skymxm.mdb";                    if (File.Exists(dataPath))                    {                        File.Copy(dataPath, sfd.FileNames[0], true);                        MessageBox.Show("导出成功!");                    }                }            }            catch (Exception ex)            {                MessageBox.Show("导出.bak文件错误信息：" + ex.Message);            }        }