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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 - 0:35
Prashant Bangaluru437
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4 solutions

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[^]
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Posted 17 Dec '12 - 1:01
SureshDasari1986723
Comments
Prashant Bangaluru - 17 Dec '12 - 21:31
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
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#)[^]
  Permalink  
Posted 17 Dec '12 - 0:44
__TR__28.5K 
FileInfo file = new FileInfo(yourFullPathOfFile);
if(file.Exists)
{
     //yes, file exists
}
else
{
    //no, file does not exists
}
  Permalink  
Posted 17 Dec '12 - 0:50
Sanjay K. Gupta7.5K
1. Created a Sample XML file (XMLFile.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
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.
 
<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>
 
DateTime dtTime = Convert.ToDateTime(DateTime.Now.ToShortDateString() + " " + xn.ChildNodes[1].InnerText);
            if (DateTime.Now.ToString("hh:mm") == dtTime.ToString("hh:mm"))
            {
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Posted 17 Dec '12 - 21:59
SureshDasari1986723
Edited 17 Dec '12 - 22:09
v4
Comments
Prashant Bangaluru - 18 Dec '12 - 22:08
Thanks Suresh..I feel that I can start this assignement today only..thanks for giving inputs at right time.
SureshDasari1986 - 24 Dec '12 - 6:09
post your solution, after completion. it will help others.
Prashant Bangaluru - 9 Jan '13 - 4:37
Sorry Suresh.. The assignement is cancelled..But I ll do as a hobby assignement and post asap
Prashant Bangaluru - 20 Feb '13 - 1:41
Hi Suresh, Now I am trying same logic with console application .We made it to run every 5 mins but the problem is we are loading the xml every 5 mins.Can you please tell me how to load an xml daily only once.
SureshDasari1986 - 1 Mar '13 - 6:40
maintain the date into a static variable for first time, then check with that date every time.
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