winform图片数据库读取与存入

  //上传
        private void button1_Click(object sender, EventArgs e)
        {

            openFileDialog1.Filter = "*jpg|*.JPG|*.gif|*.GIF|*.bmp|*.BMP|*.png|*.PNG";

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {

                string fullpath = openFileDialog1.FileName;//文件路径

              this.txtfile.Text = fullpath;
                try
                {
                    FileStream fs = new FileStream(fullpath, FileMode.Open);

                    byte[] imagebytes = new byte[fs.Length];

                    BinaryReader br = new BinaryReader(fs);

                    imagebytes = br.ReadBytes(Convert.ToInt32(fs.Length));

                    //打开数据库
                    SqlConnection con = new SqlConnection("server=(local); database =wanglei ; integrated security=true");

                    con.Open();

                    SqlCommand com = new SqlCommand("insert into imginfo values(@imgname )", con);

   &