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

namespace 圖片
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog openfile = new OpenFileDialog();
            openfile.Title = "請選擇客戶端longin的圖片";
            openfile.Filter = "Login圖片(*.jpg;*.bmp;*png)|*.jpeg;*.jpg;*.bmp;*.png|AllFiles(*.*)|*.*";
            if (DialogResult.OK == openfile.ShowDialog())
            {
                try
                {
                    //讀成二進位制
                    byte[] bytes = File.ReadAllBytes(openfile.FileName);
                    //直接返這個儲存到資料就行了cmd.Parameters.Add("@image", SqlDbType.Image).Value = bytes;

                    //輸出二進位制 在這裡把資料中取到的值放在這裡byte[] bytes=(byte[])model.image;
                    pictureBox1.Image = System.Drawing.Image.FromStream(new MemoryStream(bytes));
                    this.pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;

                    // 如果儲存成檔案：
                    //File.WriteAllBytes(@"d:\text.jpg", bytes);
                }
                catch { }
            }
        }
    }
}
 

放一個picbox和button。