How relese this file :The action can't be completed because the file is open in IIS Express Worker Process

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Hi All,

I upload a .xlsx file to server folder and fetching data from this file , In the end i want to delete this file but once i am trying it raise exception "

Quote:
The action can't be completed because the file is open in IIS Express Worker Process

" I already close the connection after that it not getting delete.
Please help me how i can do it , how release it from iis.
my code is:

Quote:
OleDbConnection con = null;
string[] filePaths = null;

Quote:
DataSet ds1 = new DataSet();
filePaths = Directory.GetFiles(Server.MapPath("~/UploadInfo/"));
List<listitem> files = new List<listitem>();
foreach (string filePath in filePaths)
{
files.Add(new ListItem(Path.GetFileName(filePath), filePath));
}
fileName = files[0].Text;
fullpath = files[0].Value;
string[] ext = fileName.Split('.');
if (ext[1] == "xls")
{
ConStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fullpath + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
else if (ext[1] == "xlsx")
{
ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fullpath + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
}
string query = "SELECT * FROM [Sheet1$]";
con = new OleDbConnection(ConStr);
OleDbCommand cmd = new OleDbCommand(query, con);
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);

if (con.State == ConnectionState.Closed)
{
con.Open();
}

Quote:
con.Close();

String mappath = Server.MapPath("~//UploadInfo//" + fileName);
FileInfo file = new FileInfo(mappath);
if (file.Exists)
{
file.Delete(); // Here is the issue
}

Many thanx in advance

Posted 1-Dec-15 19:10pm

Adi tyagi

Updated 1-Dec-15 19:27pm

v2

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Comments

phil.o 2-Dec-15 1:19am

Please show the code where you handle the file in server side.
But not in a reply to my comment: use the "Improve question" button just above and qualify your question with relevant details.

Kornfeld Eliyahu Peter 2-Dec-15 1:59am

The flow of your code is not clear from the sample, but it may the problem of a still opened connection created by the data adapter or explicitly...
Close all the explicit connections and destroy data adapter, command and table too...

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OriginalGriff · Answer 1 · 2015-12-01T21:35:00

Put a using block around the construction of the Connection, Command and Adapter objects:

C#

using (con = new OleDbConnection(ConStr))
   {
   using (OleDbCommand cmd = new OleDbCommand(query, con))
      {
      ...

And only try to delete the file outside the outer using block - that way, all open activities are Disposed before you try, and it should work.