My goal is to return a line count of header row and all data rows. This line count is to be stored in a variable and used by a Script Task to write the value to a text file.

I have tried programming the following Script Component:

public class ScriptMain : UserComponent
{
  private int rowNumber;
  public override void PreExecute()
  {
    base.PreExecute();
    rowNumber = 0;
  }

  public override void PostExecute()
  {
    base.PostExecute();
    Variables.MORTLRowCount = rowNumber;
  }

  public override void Input0_ProcessInputRow(Input0Buffer Row)
  {
    rowNumber++;
    Row.totalRows = rowNumber;
  }

}

The script component uses the PostExecute method to store the rowNumber integer to a SSIS variable. I've placed the script component after the Flat File Source transformation and before a Flat File Destination.

The Script Task creates a separate file, control file, and requires the total number of rows including header from the script component. The Script task is programmed as follows:

public void Main()
        {
        int feedVersion = 200;
        string filename = 
        (string)Dts.Variables["User::MortLCurrentFilename"].Value.ToString();
        string ctlfilename = (string)Dts.Variables["User::MORTLCtlDestinationFileName"].Value.ToString() ;
        int recordCount = (int)Dts.Variables["User::MORTLRowCount"].Value ; 
        string firstline = "Filename | Feed Version | Record Count";
        string secondline = filename + "|" + feedVersion + "|" + recordCount;
        string filetext = firstline + System.Environment.NewLine + secondline;
        System.IO.File.WriteAllText(ctlfilename, filetext);

        Dts.TaskResult = (int)ScriptResults.Success;
        }

The Script task produces the file as needed. However, the record count produced by the Script Task is 1 less than the actual record count of the file. The file, with headers, has 132 rows and the Script Task reports 131 records.

Is there a way to ensure accurate reporting of all rows (both header and data) by the Script Task and Component?