单击按钮时记录删除的文件？ 记录所有文件（已删除和取消删除）

Question

I am writing an application to delete file on a test folder that are over 6 months, the application works fine as I have tested it, I wanted to create a log file to keep track of the name of the deleted files for audit purpose.

but with the scirpt below it does record all the files (deleted and undeleted), all I need is just record the date and time and the name of the deleted files.

Thank you

Script Below:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Delete_PDF_Files
{
    public partial class Form1 : Form
    {
        private string strLogText;
        public Form1()
        {
            InitializeComponent();
        }

        private void btnCheck_Click(object sender, EventArgs e)
        { 
            // check the number of file in the CPS directory on S drive
            listBox1.Items.Clear();

            string[] files = System.IO.Directory.GetFiles(@"C:\test\"); // @"S:\CPS Papers\"
            this.listBox1.Items.AddRange(files);
            textBox1.Text = listBox1.Items.Count.ToString();
        }

        // delete button to delete files over 6 months from CPS folder
        private void btnDelete_Click(object sender, EventArgs e)
        {
            string[] files = System.IO.Directory.GetFiles(@"C:\test\"); //S:\CPS Papers  test C:\test\

            foreach (string file in files)
            {
                System.IO.FileInfo fi = new System.IO.FileInfo(file);

                if (fi.LastWriteTime < DateTime.Now.AddMonths(-6))
                    fi.Delete();

                // Create a writer and open the file: //C:\test\log
                System.IO.StreamWriter log;

                if (!System.IO.File.Exists("C:\\test\\log\\logfile.txt"))
                {
                    log = new System.IO.StreamWriter("C:\\test\\log\\logfile.txt");
                }
                else
                {
                    log = File.AppendText("C:\\test\\log\\logfile.txt");
                }

                // Write to the file:
                log.WriteLine(DateTime.Now); 
                log.WriteLine(strLogText);
                log.WriteLine();
                log.WriteLine();

                // Close the stream:
                log.Close();

            }
        }

        // Exit button
        private void btnExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}

Answer 1

Replace you delete code with this one:

private void btnDelete_Click(object sender, EventArgs e)
    {
        string[] files = System.IO.Directory.GetFiles(@"C:\test\"); //S:\CPS Papers  test C:\test\

        foreach (string file in files)
        {
            System.IO.FileInfo fi = new System.IO.FileInfo(file);
            //if (fi.LastAccessTime < DateTime.Now.AddMonths(-3))
            if (fi.LastWriteTime < DateTime.Now.AddMonths(-6))
            {
                fi.Delete();
                using (StreamWriter writer = File.AppendText("C:\\test\\log\\logfile.txt"))
                {
                    writer.Write("File: " + file + " deleted at : "+DateTime.Now);
                    writer.WriteLine("----------------------------------------------------");
                    writer.Flush();
                    writer.Close();

                }
            }

        }
    }

Answer 2

Instead of using custom logging as you are doing I would recommend that you use a good library like Log4Net . Why reinvent the wheel? I know that it has a small learning curve time but once you get to know you you can easily integrate it in any new projects.

By just adding a config section to your app.config as given here and a few lines of code you should be ready to go.

A good tutorial on Log4Net can be found here