private void frmShowData_Load(object sender, EventArgs e)
        {
            Text = "显示数据";
            this.tabControl1.TabIndex = 0;
            dt = ClassTable.getDataTable("d:/data.txt");

            #region 采用listView显示数据
            this.listView1.View = View.Details;//条目列表形式为详细列表
            listView1.Columns.Add("时间", 200, HorizontalAlignment.Left);
            listView1.Columns.Add("温度", 150, HorizontalAlignment.Left);
            listView1.Columns.Add("湿度", 100, HorizontalAlignment.Left);
            ListViewItem item;
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                item = new ListViewItem(new string[]
                {
                    dt.Rows[i][0].ToString(),
                    dt.Rows[i][1].ToString(),
                    dt.Rows[i][2].ToString()
                });
                listView1.Items.Add(item);
            }
            #endregion

            #region 采用datagridview显示数据
            this.dataGridView1.DataSource = dt;
            #endregion
        }