C#中如何定义内存表绑定DataGrid的简单实例

实例代码如下：

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 );
        }

        Windows 窗体设计器生成的代码#region Windows 窗体设计器生成的代码
        /**//// <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();
            System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(DemoForm));
            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.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("ilsLargeIcons.ImageStream")));
            this.ilsLargeIcons.TransparentColor = System.Drawing.Color.Transparent;
            // 
            // ilsSmallIcons
            // 
            this.ilsSmallIcons.ImageSize = new System.Drawing.Size(16, 16);
            this.ilsSmallIcons.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("ilsSmallIcons.ImageStream")));
            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);

        }
        #endregion

        /**//// <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;
                }
            }
        }
    }
}

 这个实例基本上包含了ListView常用方法和属性，最主要的就是要明白ListView中包含的都是ListViewItem对象。