一、数据库的建立
由于查询功能和之前的 入库管理功能 所用的数据库都一样,这里仍使用yy_textile表
在fiber_yy数据库下创建yy_textile表
初始数据库信息
二、页面的完善
登录注册页面我就不演示了,前几篇博文也都有介绍
query查询页面
main_page页面进行功能完善
三、代码实现
query查询页面
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
{
private DataSet dsall;
public string constr = "server=CY-20190824RMES;Initial Catalog=fiber_yy;User ID=sa;pwd=beyond";
private SqlDataAdapter mDataAdapter;
public query()
{
InitializeComponent();
comboBox1.Items.Add("根据面料名称查询");
comboBox1.Items.Add("根据品号查询");
}
private void button1_Click(object sender, EventArgs e)
{
try
{
SqlConnection conn = new SqlConnection(constr);
conn = new SqlConnection(constr);
mDataAdapter = new SqlDataAdapter("SELECT name AS '纺织品名称',number AS '纺织品品号',warp_density AS '经密度' ,weft_density AS '纬密度',warp_linear_density AS '经纱线密度',weft_linear_density AS '纬纱线密度',material AS '原料成分',square_meter_weight AS '平方米重量',width_of_cloth AS '幅宽',horse_length AS '匹长',organization AS '所用组织',stock AS '库存量' FROM yy_textile", conn);
dsall = new DataSet();
mDataAdapter.Fill(dsall, "hard");
dataGridView1.DataSource = dsall.Tables["hard"];
}
catch
{
MessageBox.Show("读取失败,请检查是否存在该织物");
}
}
private void button2_Click(object sender, EventArgs e)
{
this.Hide();
new main_page().Show();
}
private void button3_Click(object sender, EventArgs e)
{
try
{
string model = comboBox1.SelectedItem.ToString();
string command = textBox1.Text;
byte[] MyData = new byte[0];
SqlConnection conn = new SqlConnection(constr);
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
//cmd.CommandText = "select * from yy_textile where '" + model + "'='" + command + "'"; //sql语句按指定条件进行
if (model == "根据面料名称查询")
{
cmd.CommandText = "select * from yy_textile where name='" + command + "'";
model = "SELECT name AS '纺织品名称',number AS '纺织品品号',warp_density AS '经密度' ,weft_density AS '纬密度',warp_linear_density AS '经纱线密度',weft_linear_density AS '纬纱线密度',material AS '原料成分',square_meter_weight AS '平方米重量',width_of_cloth AS '幅宽',horse_length AS '匹长',organization AS '所用组织',stock AS '库存量' from yy_textile where name='" + command + "'";
}
if (model == "根据品号查询")
{
cmd.CommandText = "select * from yy_textile where number='" + command + "'";
model = "SELECT name AS '纺织品名称',number AS '纺织品品号',warp_density AS '经密度' ,weft_density AS '纬密度',warp_linear_density AS '经纱线密度',weft_linear_density AS '纬纱线密度',material AS '原料成分',square_meter_weight AS '平方米重量',width_of_cloth AS '幅宽',horse_length AS '匹长',organization AS '所用组织',stock AS '库存量' from yy_textile where number='" + command + "'";
}
SqlDataReader sdr = cmd.ExecuteReader();
sdr.Read();
object o = sdr["picture"];
MyData = (byte[])sdr["picture"];//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");
conn = new SqlConnection(constr);
mDataAdapter = new SqlDataAdapter(model, conn);
dsall = new DataSet();
mDataAdapter.Fill(dsall, "hard");
dataGridView1.DataSource = dsall.Tables["hard"];
}
catch
{
MessageBox.Show("读取失败,请检查是否存在该织物");
}
}
}
}
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();
}
}
}
四、效果演示
程序运行
注册我就不演示了,请参考前几篇博文
从yy_user表中找个账号密码,直接用户登录
登录成功
进入系统
演示库存查询
查阅所含全部织物信息
精确查找
根据面料名称查询
根据品号查询