Check the presence of a file in a particular folder at a Particular time

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Hi All,

I got an assignement to develop an application in C#.The application has the following functionality.
1>There will Be different folders ,Input files will be loaded at different time.
2>We have to check whether input file is present in a particular folder at particular time or not
Ex:Check the folder "X"every day at 5 PM,Check the folder "Y"every day at 6 PM,

I dont know how to start ..Could you please advice how to proceed this?

Posted 17-Dec-12 0:35am

Prashant Bangaluru

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Suresh Dasari's · Answer 1 · 2012-12-17T01:01:00

Solution 3

Write windows services
http://www.aspdotnet-suresh.com/2011/06/creating-windows-service-in-c-or.html[^]

Check the Folder or File Exists on timer elapsed event (OnElapsedTime) in the service.
http://msdn.microsoft.com/en-us/library/system.io.directory.exists.aspx[^]

http://stackoverflow.com/questions/2570930/check-if-a-file-directory-exists-is-there-a-better-way[^]

Posted 17-Dec-12 1:01am

Suresh Dasari's

Comments

Prashant Bangaluru 17-Dec-12 21:31pm

Thanks Suresh..The First link is really help ful for me..Author explained it very clear and good manner..I want to add one more question here how do I check for files in different folder at different time...?Can I use an xml whill will tell at what time which folder to check etc..Please advice me on this also

__TR__ · Answer 2 · 2012-12-17T00:44:00

Solution 1

Take a look at the File Class[^] and Directory Class[^]
Here are some sample articles
Working With File Class in C#[^]
Working with Directory Class in .Net (C#)[^]

Posted 17-Dec-12 0:44am

__TR__

Sanjay K. Gupta · Answer 3 · 2012-12-17T00:50:00

Solution 2

C#

FileInfo file = new FileInfo(yourFullPathOfFile);
if(file.Exists)
{
     //yes, file exists
}
else
{
    //no, file does not exists
}

Posted 17-Dec-12 0:50am

Sanjay K. Gupta

Suresh Dasari's · Answer 4 · 2012-12-17T21:59:00

1. Created a Sample XML file (XMLFile.xml)

XML

<?xml version="1.0" encoding="utf-8" ?>
<Information>
  <FolderInfo>
    <Folder>c:\\SampleFolder\Folder_X</Folder>
    <Time>12/18/2012 2:17:25 PM</Time>
    <Files>
      <file>XFile1.doc</file>
      <file>XFile2.txt</file>
      <file>XFile3.png</file>
      <file>XFile4.zip</file>
    </Files>
  </FolderInfo>
  <FolderInfo>
    <Folder>c:\\SampleFolder\Folder_Y</Folder>
    <Time>12/18/2012 2:19:25 PM</Time>
    <Files>
      <file>YFile1.doc</file>
      <file>YFile2.txt</file>
      <file>YFile3.png</file>
      <file>YFile4.zip</file>
    </Files>
  </FolderInfo>
  <FolderInfo>
    <Folder>c:\\SampleFolder\Folder_Z</Folder>
    <Time>12/18/2012 2:18:25 PM</Time>
    <Files>
      <file>ZFile1.doc</file>
      <file>ZFile2.txt</file>
      <file>ZFile3.png</file>
      <file>ZFile4.zip</file>
    </Files>
  </FolderInfo>
</Information>

2. After creating your windows service then add this method in the main class

private void CheckFileInFolder()
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("XMLFile.xml"));

XmlNode xnFolderInfo = xmlDoc.ChildNodes[1];

foreach (XmlNode xn in xnFolderInfo.ChildNodes)
{
string strFolder = xn.ChildNodes[0].InnerText;
DateTime dtTime = Convert.ToDateTime(xn.ChildNodes[1].InnerText);
if (DateTime.Now.ToString("dd/mm/yyyy hh:mm") == dtTime.ToString("dd/mm/yyyy hh:mm"))
{
foreach (XmlNode xnFiles in xn.ChildNodes[2])
{
string strFile = xnFiles.InnerText;
if (File.Exists(Path.Combine(strFolder, strFile)))
{
// Do Your Work here
}
}
}
}
}

Call this method on OnElapsedTime event

C#

private void OnElapsedTime(object source, ElapsedEventArgs e)
{
  TraceService("Another entry at "+DateTime.Now);
  CheckFileInFolder()
}

Here DateTime.Now.ToString("dd/mm/yyyy hh:mm") == dtTime.ToString("dd/mm/yyyy hh:mm") is just a sample use your own condition here

you said that you need to Check the folder "X"every day at 5 PM,Check the folder "Y"every day at 6 PM

Take only the time in xml node instead of date and time.

XML

<FolderInfo>
   <Folder>c:\\SampleFolder\Folder_X</Folder>
   <Time>2:17:25 PM</Time>
   <Files>
     <file>XFile1.doc</file>
     <file>XFile2.txt</file>
     <file>XFile3.png</file>
     <file>XFile4.zip</file>
   </Files>
 </FolderInfo>
 <FolderInfo>
   <Folder>c:\\SampleFolder\Folder_Y</Folder>
   <Time>2:19:25 PM</Time>
   <Files>
     <file>YFile1.doc</file>
     <file>YFile2.txt</file>
     <file>YFile3.png</file>
     <file>YFile4.zip</file>
   </Files>
 </FolderInfo>

C#

DateTime dtTime = Convert.ToDateTime(DateTime.Now.ToShortDateString() + " " + xn.ChildNodes[1].InnerText);
            if (DateTime.Now.ToString("hh:mm") == dtTime.ToString("hh:mm"))
            {