使用ListView控件展示数据

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;
using System.Data.SqlClient;

namespace WindowsFormsApplication1
{
public partial class tianjia : Form
{
public tianjia()
{
InitializeComponent();
}

private void bigg_Click(object sender, EventArgs e)
{
this.listView1.View = View.LargeIcon;
}

private void xiao_Click(object sender, EventArgs e)
{
this.listView1.View = View.SmallIcon;
}

private void xiangxi_Click(object sender, EventArgs e)
{
this.listView1.View = View.Details;
}

private void tianjia_Load(object sender, EventArgs e)
{
run();
//ListViewItem fell = new ListViewItem("didida",6);
//fell.SubItems.Add("120G");
//fell.SubItems.Add("本地磁盘");
//fell.SubItems.Add("80G");
//  fell.SubItems.AddRange(new string[]{"450G","D磁盘","120G"});
//  listView1.Items.Add(fell);

}

private void button1_Click(object sender, EventArgs e)
{
run();
}

public void run()
{
if (listView1.Items.Count>0)
{
listView1.Items.Clear();
}

string ent = "Data Source=.;Initial Catalog=MySchool;Integrated Security=True";

SqlConnection conn = new SqlConnection(ent);
conn.Open();

StringBuilder sql = new StringBuilder();
sql.AppendLine("select s.[StudentNo],s.[StudentName],s.[Sex],G.[GradeName]  ");
sql.AppendLine("  from dbo.Student as s, dbo.Grade as G  ");
sql.AppendLine("  where s.[GradeId]=G.[GradeId]  ");
sql.AppendFormat("  and s.[StudentName] like '%{0}%'",this.textBox1.Text.Trim());

//查询并显示
DBHelper per = new DBHelper();

try
{
SqlCommand command = new SqlCommand(sql.ToString(),per.Connection);

per.OpenConnection();

SqlDataReader rader = command.ExecuteReader();

//如果没有数据行,将弹出提示
if (!rader.HasRows)
{
MessageBox.Show("没有要查找的记录", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
while (rader.Read())
{
string studentNo = rader["StudentNo"].ToString();
string studentname = rader["StudentName"].ToString();
string  genderld = rader["sex"].ToString(); //性别的值

string gradname = rader["GradeName"].ToString();

//创建 ListViewItem
ListViewItem tem = new ListViewItem(studentNo);

//添加子项
tem.SubItems.Add(studentname);
tem.SubItems.Add(genderld);
tem.SubItems.Add(gradname);
listView1.Items.Add(tem);

}
}
rader.Close();

}
catch(Exception)
{
MessageBox.Show("系统出现错误","提示",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
per.CloseConnection();
}

}

}
}

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
using System.Data;

namespace WindowsFormsApplication1
{
/// <summary>
/// 此类维护数据库连接字符串，和 Connection 对象
/// </summary>
public  class DBHelper
{
// 数据库连接字符串
private string connString = @"Data Source=.;Initial Catalog=MySchool;Integrated Security=True";

// 数据库连接 Connection 对象
private SqlConnection connection;

/// <summary>
/// Connection对象
/// </summary>
public SqlConnection Connection
{
get
{
if (connection == null)
{
connection = new SqlConnection(connString);
}
return connection;
}
}

/// <summary>
/// 打开数据库连接
/// </summary>
public void OpenConnection()
{
if (Connection.State == ConnectionState.Closed)
{
Connection.Open();
}
else if (Connection.State == ConnectionState.Broken)

4000
{
Connection.Close();
Connection.Open();
}
}

/// <summary>
/// 关闭数据库连接
/// </summary>
public void CloseConnection()
{
if (Connection.State == ConnectionState.Open || Connection.State == ConnectionState.Broken)
{
Connection.Close();
}
}
}
}