สอบถามการ Capture ภาพจาก Webcam ลงฐานข้อมูลโดยทำการตั้งชื่อไฟล์อัตโนมัติ

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Data.SqlClient;

namespace picture
{
    public partial class Form1 : Form
    {
        string pic;
        Bitmap bmpsave;
        WebCam webcam;
        SqlConnection cnn;
        string connectionString = null;

        public Form1()
        {
            InitializeComponent();
        }


        private void button1_Click(object sender, EventArgs e)
        {
            connectionString = "Server=RFID-PC\\SQLEXPRESS;UID=sa;PASSWORD=admin;Database=RFID;";
            cnn = new SqlConnection(connectionString);
            pic = Convert.ToString(imgVideo.Image);
            if (File.Exists(pic))
            {
                
                byte[] content = ImageToStream(pic);
                cnn.Open();

                SqlCommand cmd = new SqlCommand("INSERT INTO DATAALL (PHOTO)", cnn);
                cmd.Parameters.AddWithValue("@PHOTO", content);
                cmd.ExecuteNonQuery();

                cnn.Close();
                MessageBox.Show("Image inserted");
            }
            else
            {
                MessageBox.Show(pic + " not found ");
            }
        }

        private byte[] ImageToStream(string fileName)
        {
            MemoryStream stream = new MemoryStream();
        tryagain:
            try
            {
                Bitmap image = new Bitmap(fileName);
                image.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            catch (Exception ex)
            {
                goto tryagain;
            }

            return stream.ToArray();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            imgVideo.Image = imgVideo.Image;
            webcam.Stop();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            webcam.Continue();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
// TODO: This line of code loads data into the 'rFIDDataSet2.DATAALL' table. You can move, or remove it, as needed.
this.dATAALLTableAdapter.Fill(this.rFIDDataSet2.DATAALL);
            webcam = new WebCam();
            webcam.InitializeWebCam(ref imgVideo);
            webcam.Start();
            
        }

    }
}

private void checkfile()
{
        int count, countdown;
        count = 999;
        countdown = 100;
        while (countdown <= count)
        {
            countdown = countdown + 1;
            if (File.Exists(Application.StartupPath + "\\MyScreenshot" + countdown + ".png"))
            {
            }
            else
            {
                path = Application.StartupPath + "\\MyScreenshot" + countdown + ".png";
                countdown = 1000;
            }
        }
    }

public static void SaveImageCapture(System.Drawing.Image image)
        {
            int count, countdown;
            string path;
            count = 999;
            countdown = 0;
            while (countdown <= count)
            {
                countdown = countdown + 1;
                if (File.Exists(Application.StartupPath + "\\person" + countdown + ".jpg"))
                {
                    path = Application.StartupPath + "\\person" + countdown + ".jpg";// Default file name
                    // Save Image
                    string filename = path;
                    FileStream fstream = new FileStream(filename, FileMode.Create);
                    image.Save(fstream, System.Drawing.Imaging.ImageFormat.Jpeg);
                    fstream.Close();
                }
                else
                {
                    path = Application.StartupPath + "\\person" + countdown + ".jpg";// Default file name
                    countdown = 1000;
                    // Save Image
                    string filename = path;
                    FileStream fstream = new FileStream(filename, FileMode.Create);
                    image.Save(fstream, System.Drawing.Imaging.ImageFormat.Jpeg);
                    fstream.Close();
                }
            }
        }