Cigarette/WindowsFormsApp2/Alarm_Record.cs

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.IO;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;
using System.Net.NetworkInformation;

namespace WindowsFormsApp2
{
    public partial class Alarm_Record : Form
    {
        public Alarm_Record()
        {
            InitializeComponent();
        }
        public void UpdateDialog()
        {
            this.listView1.BeginUpdate();   //数据更新，UI暂时挂起，直到EndUpdate绘制控件，可以有效避免闪烁并大大提高加载速度

            this.listView1.View = View.Details;                //显示方式(注意View是Details详细显示)  
            this.listView1.GridLines = true;                //行和列是否显示网格线  
            this.listView1.LabelEdit = true;                           //是否可编辑  
            this.listView1.Scrollable = true;                   //没有足够的空间显示时,是否添加滚动条  
            this.listView1.HeaderStyle = ColumnHeaderStyle.Clickable;              //对表头进行设置  
            this.listView1.FullRowSelect = true;               //是否可以选择行  
            this.listView1.MultiSelect = false;                        //禁止多选 
            this.listView1.Columns[3].Width = 0;              //用于隐藏第四列的指令标号   不让用户看见

            this.listView1.Clear();  //从控件中移除所有项和列（包括列表头）
            this.listView1.Columns.Add("报警开始时间", 120, HorizontalAlignment.Left);
            this.listView1.Columns.Add("报警处理时间", 120, HorizontalAlignment.Left);
            this.listView1.Columns.Add("报警信息", 120, HorizontalAlignment.Left);
            this.listView1.Columns.Add("报警代码", 120, HorizontalAlignment.Left);

            string path = @"alarm.txt";
            if (File.Exists(path))
            {
                foreach (string text in System.IO.File.ReadLines(path))
                {
                    if (text.IndexOf('_') != -1)
                    {
                        string[] str = text.Split(new char[] { '_' }, StringSplitOptions.RemoveEmptyEntries);
                        ListViewItem list = new ListViewItem();       //新建ListViewItem对象：list
                        list.SubItems.Add(str[0]);
                        list.SubItems.Add(str[1]);
                        list.SubItems.Add(str[2]);
                        list.SubItems.Add(str[3]);
                        this.listView1.Items.Add(list);
                    }
                }
            }
            this.listView1.EndUpdate();  //结束数据处理，UI界面一次性绘制。
        }
    }
}