if (Pic1.Image == null)

            {

                MessageBox.Show("请选择要保存的图像！");

            }

            else

            {

                try

                {

                    string fullpath = op.FileName;

                    FileStream fs = new FileStream(fullpath, FileMode.Open, FileAccess.Read);

                    BinaryReader br = new BinaryReader(fs);

                    byte[] imagebytes = br.ReadBytes((int)fs.Length);



                    SetConnection();

                    SQLiteCommand com = sql_con.CreateCommand();

                    sql_con.Open();



                    com.CommandText = "insert into ImageStore(ImageBlob) values(@image)";



                    com.Parameters.AddWithValue("@image", imagebytes);

                    int Flag = 0;



                    Flag += com.ExecuteNonQuery();

                    sql_con.Close();

                    if (Flag == 1)

                    {

                        MessageBox.Show("图片保存成功!");

                        Pic1.Image = null;

                        getMaxValue();

                    }

                    else

    &n