title: Crystal Report - File Exists Error
body: <p>I am using crystal report (run-time version 13.0.15) to generate PDF reports from an asp.net web application. Randomly while using the reports, I am getting a show stopper file-locked error- "System.IO.IOException-The file exists. ", after that none of my reports are not working. But the application was working fine. I did an IIS Reset, but the issue exists. </p>
  
  <p>Then I removed the temp files from "C:\Windows\Temp" folder and then all all reports are working fine.</p>
  
  <p>Here is the source code, I am using to generate reports. I am not using CR viewer. All reports are exporting to PDF.</p>
  
  <pre><code>var __reportData = GetData(filter);
  ReportDocument rd = new ReportDocument();
  try
  {
  rd.Load(rptFilePath);
  rd.SetDataSource((System.Data.DataTable)__reportData);
  System.IO.Stream oStream = null;
  byte[] byteArray = null;
  oStream = rd.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
  byteArray = new byte[oStream.Length];
  oStream.Read(byteArray, 0, Convert.ToInt32(oStream.Length - 1));
  rd.Close();
  rd.Dispose();
  rd = null;
  GC.Collect();
  GC.WaitForPendingFinalizers();
  GC.Collect();
  }
  catch (Exception ex)
  {
      if (rd != null)
      {
          rd.Close();
          rd.Dispose();
          rd = null;
          GC.Collect();
          GC.WaitForPendingFinalizers();
          GC.Collect();
      }
      CrystalReportExceptionHandler.ShowError(ex, ex.Message);
  }
  finally
  {
      if (rd != null)
      {
          rd.Close();
          rd.Dispose();
          rd = null;
          GC.Collect();
          GC.WaitForPendingFinalizers();
          GC.Collect();
      }
  }
  </code></pre>