3、 Upload fabric photos to SQL server and provide name to display fabric photos

One 、 The establishment of database

Still fiber_yy Create... Under database images surface

images The table is designed as follows

Two 、 Page perfect design

main_page The function of the page is improved

Warehousing management system
warehousing page

Inventory query system
query page

The previous blog posts on the login registration page have been implemented , I will repeat it here , Still use the previous login page and database

3、 ... and 、 Code implementation

main_page page

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

namespace fiber_yy
{
    
    public partial class main_page : Form
    {
    
        public main_page()
        {
    
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
    
            MessageBox.Show(" Quit successfully ");
            this.Close();
            new Form1().Show();
        }

        private void button2_Click(object sender, EventArgs e)
        {
    
            this.Close();
            new warehousing().Show();
        }

        private void button3_Click(object sender, EventArgs e)
        {
    
            this.Close();
            new shipment().Show();
        }

        private void button4_Click(object sender, EventArgs e)
        {
    
            this.Close();
            new query().Show();
        }
    }
}

warehousing page

using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.Sql;
using System.Data.SqlClient;
namespace fiber_yy
{
    
    public partial class warehousing : Form
    {
    
        public string constr = "server=CY-20190824RMES;Initial Catalog=fiber_yy;User ID=sa;pwd=beyond";
        
        public warehousing()
        {
    
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
    

            OpenFileDialog ofdlgTest = new OpenFileDialog();
            //ofdlgTest.Filter = "*.jpg|*.png"; // File filtering   Filter files that can be opened 
            ofdlgTest.Filter = "";
            ofdlgTest.Multiselect = false;    // Set that multiple files cannot be selected 

            // The file open dialog box is displayed 
            DialogResult result = ofdlgTest.ShowDialog();

            // When selecting the open button , Display the file name in the text box 
            if (result == DialogResult.OK)                   // Determine whether to open the file 
            {
    
                this.textBox9.Text = ofdlgTest.FileName;

                pictureBox1.Image = Image.FromFile(ofdlgTest.FileName);
            }

        }

        private void button1_Click(object sender, EventArgs e)
        {
    
            
            string path = textBox9.Text;

            FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read); // Add the picture of the specified path to FileStream Class 
            BinaryReader br = new BinaryReader(fs);// adopt FileStream Object instantiation BinaryReader object 

            byte[] imgBytesIn = br.ReadBytes(Convert.ToInt32(fs.Length));// Convert pictures to binary data 
            //Save(imgBytesIn);// call （ A way to write by yourself ）
            SqlConnection conn = new SqlConnection(constr);
            conn.Open();

            string name = textBox1.Text;
            SqlCommand cmd = new SqlCommand("insert into images (name,image) values(@name,@Image);", conn); //SQL sentence 
                

            cmd.Parameters.Add("@name", SqlDbType.VarChar);
            cmd.Parameters["@name"].Value = name;

            cmd.Parameters.Add("@Image", SqlDbType.Image);
            cmd.Parameters["@Image"].Value = imgBytesIn;

            cmd.ExecuteNonQuery();

            conn.Close();
            MessageBox.Show(" Image upload succeeded ");

        }

        private void button3_Click(object sender, EventArgs e)
        {
    
            new main_page().Show();
            this.Hide();
        }
    }
}

query page

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

namespace fiber_yy
{
    
    public partial class query : Form
    {
    
        public string constr = "server=CY-20190824RMES;Initial Catalog=fiber_yy;User ID=sa;pwd=beyond";
        public query()
        {
    
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
    
            try
            {
    
                byte[] MyData = new byte[0];
                SqlConnection conn = new SqlConnection(constr);
                string name = textBox1.Text;
                conn.Open();
                SqlCommand cmd = new SqlCommand();
                cmd.Connection = conn;
                cmd.CommandText = "select * from images where name='" + name + "'"; // Write the picture you want to check name Information 
                SqlDataReader sdr = cmd.ExecuteReader();
                sdr.Read();
                object o = sdr["Image"];
                MyData = (byte[])sdr["Image"];// Read the bit stream of the first picture 
                MemoryStream memoryStream = null;
                memoryStream = new MemoryStream(MyData);
                pictureBox1.Image = Image.FromStream(memoryStream);// Assign pictures to pictureBox1 Control 
                MessageBox.Show(" Read successful ");
            }
            catch 
            {
    
                MessageBox.Show(" Read failed , Please check if the fabric is present ");
            }

            
        }
    }
}

Four 、 Effect demonstration

The program runs

I won't demonstrate if I register , Please refer to the previous blog posts
from yy_user Find an account and password in the table , Direct user login


Login successful

Entry system

At present, we have preliminarily realized Warehousing management function and Inventory query function

First demonstrate Warehousing management system

Original database information

At present, the warehousing management function mainly stores the fabric name and fabric photo entered by the user

Upload photos


Put in storage

View database information

Right click images surface Choose the former 1000 That's ok , Update database information

The last one is the newly stored picture

Next, click return , Go back to the main page , Demonstrate the inventory query function



Click on button1

Optimization continues …