FileSystemWatcher的双项

问题描述

我做了一个小的WinForms应用程序来监控新的PDF文件的某个文件夹，如果在particulair文件夹中创建一个新的PDF文件，将它复制到其他位置。

我遇到的问题是，FileSystemWatcher的创建在我的列表框双/多条目，我怎么能解决这个问题？

 命名空间Scanmonitor 
 {
公共部分Form1类：表格
 {
 FileSystemWatcher的守望者=新FileSystemWatcher的（）; 
的DateTime lastRead = DateTime.MinValue; 
 
 
公共Form1中（）
 {
的InitializeComponent（）; 
} 
 
私人无效Form1_Load的（对象发件人，EventArgs五）
 {
 FileWatch（）; 
} 
 
公共无效FileWatch（）
 {
 watcher.Path = @C：\Scanner 
 watcher.NotifyFilter = NotifyFilters.FileName | NotifyFilters.DirectoryName | NotifyFilters.LastWrite; 
 watcher.Filter =* .PDF; 
 watcher.Changed + =新FileSystemEventHandler（调用onChanged）; 
 watcher.EnableRaisingEvents = TRUE; 
} 
 
公共无效调用onChanged（对象源，FileSystemEventArgs E）
 {
 scannerListBox.Items.Add（e.FullPath）; 
 scannerListBox.SelectedIndex = scannerListBox.Items.Count  -  1; 
 FileMove（scannerListBox.SelectedItem.ToString（））; 
} 
 
公共无效FileMove（字符串文件路径）
 {
试
 {
 System.IO.File.Copy（文件路径，@ \\share\Data\Scans运OCE 600\+ Path.GetFileName（文件路径））; 
} 
赶上（异常前）
 {
 ToolLabel.Text = ex.Message.ToString（）; 
} 
} 
} 
} 
  

}

得到它的工作。

 公共无效调用onChanged（对象源， FileSystemEventArgs E）
 {
试
 {
 watcher.EnableRaisingEvents = FALSE; 
 FileInfo的objFileInfo =新的FileInfo（e.FullPath）; 
如果（objFileInfo.Exists！）回报; 
 System.Threading.Thread.Sleep（5000）; 
 
 FileInfo的fileinformatie =新的FileInfo（e.FullPath）; 
串strCreateTime = fileinformatie.CreationTime.ToString（）; 
串strCreateDate = fileinformatie.CreationTime.ToString（）; 
 
 strCreateTime = strCreateTime.Remove（strCreateTime.LastIndexOf（））; 
 strCreateDate = strCreateDate.Remove（0，strCreateDate.LastIndexOf（））; 
 
 ProcessAllFiles（e.FullPath，strCreateTime，strCreateDate）; 
} 
赶上（异常前）
 {
 ToolLabel.Text = ex.Message.ToString（）; 
} 
终于
 {
 watcher.EnableRaisingEvents = TRUE; 
} 
} 
  

解决方案

 公共无效调用onChanged（对象源，FileSystemEventArgs E）
 {
试
 {
 watcher.EnableRaisingEvents = FALSE; 
 FileInfo的objFileInfo =新的FileInfo（e.FullPath）; 
如果（objFileInfo.Exists！）回报; 
 System.Threading.Thread.Sleep（5000）; 
 
 FileInfo的fileinformatie =新的FileInfo（e.FullPath）; 
串strCreateTime = fileinformatie.CreationTime.ToString（）; 
串strCreateDate = fileinformatie.CreationTime.ToString（）; 
 
 //忽略此，只为我的文件信息。 
 strCreateTime = strCreateTime.Remove（strCreateTime.LastIndexOf（））; 
 strCreateDate = strCreateDate.Remove（0，strCreateDate.LastIndexOf（））; 
 
 ProcessAllFiles（e.FullPath，strCreateTime，strCreateDate）; 
} 
赶上（异常前）
 {
 ToolLabel.Text = ex.Message.ToString（）; 
} 
终于
 {
 watcher.EnableRaisingEvents = TRUE; 
} 
} 
  

I made a small winforms application to monitor a certain folder for new pdf files, if a new pdf file is created in the particulair folder it will copy it to an other location.

The problem i'm having is that the filesystemwatcher creates double/multiple entries in my listbox, how can i solve this?

namespace Scanmonitor
{
    public partial class Form1 : Form
    {
        FileSystemWatcher watcher = new FileSystemWatcher();
        DateTime lastRead = DateTime.MinValue;


        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            FileWatch();
        }

        public void FileWatch()
        {
            watcher.Path = @"C:\Scanner";
            watcher.NotifyFilter = NotifyFilters.FileName | NotifyFilters.DirectoryName | NotifyFilters.LastWrite;
            watcher.Filter = "*.pdf";
            watcher.Changed += new FileSystemEventHandler(OnChanged);
            watcher.EnableRaisingEvents = true;
        }

        public void OnChanged(object source, FileSystemEventArgs e)
        {
            scannerListBox.Items.Add(e.FullPath);
            scannerListBox.SelectedIndex = scannerListBox.Items.Count - 1;
            FileMove(scannerListBox.SelectedItem.ToString());
        }

        public void FileMove(string filePath)
        {
            try
            {
                System.IO.File.Copy(filePath, @"\\share\Data\Scans op OCE 600\" + Path.GetFileName(filePath));
            }
            catch (Exception ex)
            {
                ToolLabel.Text = ex.Message.ToString();
            }
        }
    }
}

}

Got it working.

public void OnChanged(object source, FileSystemEventArgs e)
    {
        try
        {
            watcher.EnableRaisingEvents = false;
            FileInfo objFileInfo = new FileInfo(e.FullPath);
            if (!objFileInfo.Exists) return;
            System.Threading.Thread.Sleep(5000);

            FileInfo fileinformatie = new FileInfo(e.FullPath);
            string strCreateTime = fileinformatie.CreationTime.ToString();
            string strCreateDate = fileinformatie.CreationTime.ToString();

            strCreateTime = strCreateTime.Remove(strCreateTime.LastIndexOf(" "));
            strCreateDate = strCreateDate.Remove(0,strCreateDate.LastIndexOf(" "));

            ProcessAllFiles(e.FullPath, strCreateTime, strCreateDate);
        }
        catch (Exception ex)
        {
            ToolLabel.Text = ex.Message.ToString();
        }
        finally
        {
            watcher.EnableRaisingEvents = true;
        }
    }

解决方案

public void OnChanged(object source, FileSystemEventArgs e)
{
    try
    {
        watcher.EnableRaisingEvents = false;
        FileInfo objFileInfo = new FileInfo(e.FullPath);
        if (!objFileInfo.Exists) return;
        System.Threading.Thread.Sleep(5000);

        FileInfo fileinformatie = new FileInfo(e.FullPath);
        string strCreateTime = fileinformatie.CreationTime.ToString();
        string strCreateDate = fileinformatie.CreationTime.ToString();

        //Ignore this, only for my file information.
        strCreateTime = strCreateTime.Remove(strCreateTime.LastIndexOf(" "));
        strCreateDate = strCreateDate.Remove(0,strCreateDate.LastIndexOf(" "));

        ProcessAllFiles(e.FullPath, strCreateTime, strCreateDate);
    }
    catch (Exception ex)
    {
        ToolLabel.Text = ex.Message.ToString();
    }
    finally
    {
        watcher.EnableRaisingEvents = true;
    }
}

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