三、上传织物图片至SQL Server并提供name进行展示织物照片

一、数据库的建立

还是在fiber_yy数据库下创建images表
在这里插入图片描述
images表设计如下

二、页面完善设计

main_page页面进行功能完善
在这里插入图片描述
入库管理系统
warehousing页面

库存查询系统
query页面

登录注册页面前面几个博文已经实现过了，这里就再赘述了，仍是沿用前面的登录注册页面及数据库

三、代码实现

main_page页面

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("退出成功");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页面

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";   //文件过滤 筛选可以打开的文件ofdlgTest.Filter = "";ofdlgTest.Multiselect = false;    //设置不可以选择多个文件//显示文件打开对话框DialogResult result = ofdlgTest.ShowDialog();//选择打开按钮的时候，将文件名显示到文本框中if (result == DialogResult.OK)                   //判断是否打开文件{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); //将指定路径的图片添加到FileStream类中BinaryReader br = new BinaryReader(fs);//通过FileStream对象实例化BinaryReader对象byte[] imgBytesIn = br.ReadBytes(Convert.ToInt32(fs.Length));//将图片转为二进制数据//Save(imgBytesIn);//调用（自己写的一个方法）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语句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("图片上传成功");}private void button3_Click(object sender, EventArgs e){new main_page().Show();this.Hide();}}
}

query页面

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 + "'"; //写自己要查图片的name信息SqlDataReader sdr = cmd.ExecuteReader();sdr.Read();object o = sdr["Image"];MyData = (byte[])sdr["Image"];//读取第一个图片的位流MemoryStream memoryStream = null;memoryStream = new MemoryStream(MyData);pictureBox1.Image = Image.FromStream(memoryStream);//将图片赋给pictureBox1控件MessageBox.Show("读取成功");}catch {MessageBox.Show("读取失败，请检查是否存在该织物");}}}
}