listview的使用一例
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
namespace ListViewDemo
{
/**//// <summary>
/// Form1 的摘要说明。
/// </summary>
public class DemoForm : System.Windows.Forms.Form
{
private System.Windows.Forms.ListView lvw;
private System.Windows.Forms.ImageList ilsLargeIcons;
private System.Windows.Forms.ImageList ilsSmallIcons;
private System.Windows.Forms.ComboBox cboView;
private System.Windows.Forms.ColumnHeader columnHeader1;
private System.Windows.Forms.ColumnHeader columnHeader2;
private System.Windows.Forms.ColumnHeader columnHeader3;
private System.Windows.Forms.ColumnHeader columnHeader4;
private System.Windows.Forms.ColumnHeader columnHeader5;
private System.Windows.Forms.ColumnHeader columnHeader6;
private System.ComponentModel.IContainer components;
private System.Windows.Forms.Button btnUse;
private System.Windows.Forms.Button btnLeave;
private ListViewItem itmX;
private System.Windows.Forms.Button btnStat;
const int MoneyPerHour=2;
public DemoForm()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/**//// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
/**//// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.lvw = new System.Windows.Forms.ListView();
this.columnHeader1 = new System.Windows.Forms.ColumnHeader();
this.columnHeader2 = new System.Windows.Forms.ColumnHeader();
this.columnHeader3 = new System.Windows.Forms.ColumnHeader();
this.columnHeader4 = new System.Windows.Forms.ColumnHeader();
this.columnHeader5 = new System.Windows.Forms.ColumnHeader();
this.columnHeader6 = new System.Windows.Forms.ColumnHeader();
this.ilsLargeIcons = new System.Windows.Forms.ImageList(this.components);
this.ilsSmallIcons = new System.Windows.Forms.ImageList(this.components);
this.cboView = new System.Windows.Forms.ComboBox();
this.btnUse = new System.Windows.Forms.Button();
this.btnLeave = new System.Windows.Forms.Button();
this.btnStat = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// lvw
//
this.lvw.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
this.columnHeader1,
this.columnHeader2,
this.columnHeader3,
this.columnHeader4,
this.columnHeader5,
this.columnHeader6});
this.lvw.FullRowSelect = true;
this.lvw.GridLines = true;
this.lvw.HideSelection = false;
this.lvw.LargeImageList = this.ilsLargeIcons;
this.lvw.Location = new System.Drawing.Point(0, 0);
this.lvw.MultiSelect = false;
this.lvw.Name = "lvw";
this.lvw.Size = new System.Drawing.Size(512, 232);
this.lvw.TabIndex = 0;
this.lvw.View = System.Windows.Forms.View.Details;
this.lvw.SelectedIndexChanged += new System.EventHandler(this.lvw_SelectedIndexChanged);
//
// columnHeader1
//
this.columnHeader1.Text = "机号";
this.columnHeader1.Width = 54;
//
// columnHeader2
//
this.columnHeader2.Text = "状态";
this.columnHeader2.Width = 58;
//
// columnHeader3
//
this.columnHeader3.Text = "上机时间";
this.columnHeader3.Width = 126;
//
// columnHeader4
//
this.columnHeader4.Text = "下机时间";
this.columnHeader4.Width = 118;
//
// columnHeader5
//
this.columnHeader5.Text = "小计";
this.columnHeader5.Width = 70;
//
// columnHeader6
//
this.columnHeader6.Text = "金额";
//
// ilsLargeIcons
//
this.ilsLargeIcons.ImageSize = new System.Drawing.Size(32, 32);
this.ilsLargeIcons.TransparentColor = System.Drawing.Color.Transparent;
//
// ilsSmallIcons
//
this.ilsSmallIcons.ImageSize = new System.Drawing.Size(16, 16);
this.ilsSmallIcons.TransparentColor = System.Drawing.Color.Transparent;
//
// cboView
//
this.cboView.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboView.Items.AddRange(new object[] {
"大图标",
"详细资料",
"小图标",
"列表"});
this.cboView.Location = new System.Drawing.Point(24, 248);
this.cboView.Name = "cboView";
this.cboView.Size = new System.Drawing.Size(96, 20);
this.cboView.TabIndex = 1;
this.cboView.SelectedIndexChanged += new System.EventHandler(this.cboView_SelectedIndexChanged);
//
// btnUse
//
this.btnUse.Location = new System.Drawing.Point(168, 248);
this.btnUse.Name = "btnUse";
this.btnUse.Size = new System.Drawing.Size(80, 24);
this.btnUse.TabIndex = 2;
this.btnUse.Text = "上机登记";
this.btnUse.Click += new System.EventHandler(this.btnUse_Click);
//
// btnLeave
//
this.btnLeave.Location = new System.Drawing.Point(264, 248);
this.btnLeave.Name = "btnLeave";
this.btnLeave.Size = new System.Drawing.Size(80, 24);
this.btnLeave.TabIndex = 2;
this.btnLeave.Text = "下机登记";
this.btnLeave.Click += new System.EventHandler(this.btnLeave_Click);
//
// btnStat
//
this.btnStat.Location = new System.Drawing.Point(360, 248);
this.btnStat.Name = "btnStat";
this.btnStat.Size = new System.Drawing.Size(64, 24);
this.btnStat.TabIndex = 3;
this.btnStat.Text = "统计";
this.btnStat.Click += new System.EventHandler(this.btnStat_Click);
//
// DemoForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(512, 280);
this.Controls.Add(this.btnStat);
this.Controls.Add(this.btnUse);
this.Controls.Add(this.cboView);
this.Controls.Add(this.lvw);
this.Controls.Add(this.btnLeave);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.MaximizeBox = false;
this.Name = "DemoForm";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "ListView控件的使用";
this.Load += new System.EventHandler(this.DemoForm_Load);
this.ResumeLayout(false);
}
/**//// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new DemoForm());
}
private void DemoForm_Load(object sender, System.EventArgs e)
{
lvw.SmallImageList=ilsSmallIcons;
for (int i=1;i<=30;i++)
{
itmX=lvw.Items.Add(i.ToString(),0); //Add方法返回新增的ListViewItem对象
itmX.SubItems.Add("未使用");
itmX.SubItems.Add("");
itmX.SubItems.Add("");
itmX.SubItems.Add("");
itmX.SubItems.Add("");
}
cboView.SelectedIndex=1;
}
private void cboView_SelectedIndexChanged(object sender, System.EventArgs e)
{
lvw.View=(View)cboView.SelectedIndex;
}
private void btnUse_Click(object sender, System.EventArgs e)
{
if (lvw.SelectedItems.Count>0)
{
itmX=lvw.SelectedItems[0];
if (MessageBox.Show("确定使用" + itmX.Text + "号计算机吗？","提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Question)==DialogResult.OK)
{
itmX.SubItems[2].Text=DateTime.Now.ToString();
itmX.SubItems[1].Text="使用中";
itmX.ImageIndex=1;
itmX.SubItems[3].Text="";
itmX.SubItems[4].Text="";
itmX.SubItems[5].Text="";
lvw_SelectedIndexChanged(lvw,EventArgs.Empty);
}
}
}
private void btnLeave_Click(object sender, System.EventArgs e)
{
if (lvw.SelectedItems.Count>0)
{
itmX=lvw.SelectedItems[0];
if (MessageBox.Show("确定不再使用" + itmX.Text + "号计算机吗？","提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Question)==DialogResult.OK)
{
itmX.SubItems[3].Text=DateTime.Now.ToString();
itmX.SubItems[1].Text="未使用";
itmX.ImageIndex=0;
TimeSpan ts=DateTime.Now-DateTime.Parse(itmX.SubItems[2].Text);
itmX.SubItems[4].Text=ts.Hours + "小时" + ts.Minutes + "分";
int hours=ts.Hours;
if (ts.Minutes>0) hours++;//不足一小时按一小时计算
itmX.SubItems[5].Text=hours*MoneyPerHour + "元";
lvw_SelectedIndexChanged(lvw,EventArgs.Empty);
SqlConnection cn=DBOperate.GetConnection();
try
{
cn.Open();
SqlCommand cmd=new SqlCommand("Insert into UsingDetails Values(@ComputerNo, @StartTime, @EndTime, @TotalMoney)",cn);
cmd.Parameters.Add("@ComputerNo",int.Parse(itmX.Text));
cmd.Parameters.Add("@StartTime",DateTime.Parse(itmX.SubItems[2].Text));
cmd.Parameters.Add("@EndTime",DateTime.Now);
cmd.Parameters.Add("@TotalMoney",(decimal)(hours*MoneyPerHour));
cmd.ExecuteNonQuery();
}
finally
{
cn.Close();
}
}
}
}
private void btnStat_Click(object sender, System.EventArgs e)
{
// StatForm frmStat=new StatForm();
// frmStat.ShowDialog();
}
private void lvw_SelectedIndexChanged(object sender, System.EventArgs e)
{
if (lvw.SelectedItems.Count>0)
{
if (lvw.SelectedItems[0].ImageIndex==0)
{
btnUse.Enabled=true;
btnLeave.Enabled=false;
}
else
{
btnUse.Enabled=false;
btnLeave.Enabled=true;
}
}
}
}
}
