6150-HMI/CowainHmi/Common/LogSearch.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace CowainHmi
{
    public partial class LogSearch : UserControl
    {
        public LogSearch()
        {
            InitializeComponent();
            dateTimePicker1.Value = DateTime.Now;
        }
        // 定义并添加自定义属性  
        [Browsable(true)]
        [Category("Custom Properties")]
        [Description("日志文件路径")]
        public string LogFilePath
        {
            get;
            set;
        }
        public class LogEntry
        { 
           public DateTime 时间 { get; set; }
           public string 操作员 { get; set; }
           public string 内容 { get; set; }
        }
        private void search_Click(object sender, EventArgs e)
        {
            List<LogEntry> list = new List<LogEntry>();
            dataGridView1.DataSource = list;
            // 读取并解析CSV文件  
            string logFolder = LogFilePath + @"\" + dateTimePicker1.Value.ToString("yyMMdd") + ".csv";
            if (!File.Exists(logFolder))
            {
                MessageBox.Show("没有选择文件，或文件不存在！");
                return;
            }
            var logEntries = ReadLogEntries(logFolder);

            // 按时间段过滤日志条目
            list = logEntries.Where(entry => entry.内容.ToLower().Contains(content.Text.ToLower().Trim())).OrderByDescending(x=>x.时间).ToList();
            dataGridView1.DataSource = list;
        }

        static List<LogEntry> ReadLogEntries(string filePath)
        {
            var logEntries = new List<LogEntry>();

            int N = 1;
            foreach (var line in File.ReadAllLines(filePath, Encoding.GetEncoding("GB2312")))
            {
                try
                {
                    if (N == 1)
                    {
                        N++;
                        continue;
                    }
                    var parts = line.Split(',');
                    var time = DateTime.ParseExact(parts[0].Trim(), "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture);
                    string actionOperator= parts[1].Trim();
                    string content = "";
                    for (int i = 2; i < parts.Length; i++)
                    {
                        content = content +" "+ parts[i].Trim();
                    }
                    logEntries.Add(new LogEntry { 时间 = time,操作员= actionOperator, 内容 = content });
                }
                catch (Exception ex)
                {

                    //throw;
                }
                N++;
            }

            return logEntries;
        }

        public string ShowOpenFileDialog()
        {
            using (FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog())
            {
                folderBrowserDialog.Description = "请选择一个文件夹";
                folderBrowserDialog.ShowNewFolderButton = true;
                folderBrowserDialog.SelectedPath = AppDomain.CurrentDomain.BaseDirectory;

                DialogResult result = folderBrowserDialog.ShowDialog();

                if (result == DialogResult.OK && !string.IsNullOrWhiteSpace(folderBrowserDialog.SelectedPath))
                {
                    return folderBrowserDialog.SelectedPath;
                }
                else
                {
                    return "";
                }
            }
        }

        private void logFileSelect_Click(object sender, EventArgs e)
        {
            LogFilePath = ShowOpenFileDialog();
            logFileSelect.Text = LogFilePath;
            if (logFileSelect.Text.Length<3)
            {
                logFileSelect.Text = "点击选择日志文件";
            }
        }

        private void LogSearch_Load(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(LogFilePath))
            {
                logFileSelect.Text = "点击选择日志文件";
            }
            else
            {
                logFileSelect.Text= LogFilePath;
            }
        }
    }
}