Custom Pipeline component for Removing Trailer record from .txt file

Question

public Microsoft.BizTalk.Message.Interop.IBaseMessage
Execute(Microsoft.BizTalk.Component.Interop.IPipelineContext pc,
Microsoft.BizTalk.Message.Interop.IBaseMessage inmsg)
    IBaseMessagePart bodyPart = inmsg.BodyPart;
    Stream originalStrm = bodyPart.GetOriginalDataStream();
    StreamReader sReader =
new StreamReader(originalStrm,
System.Text.Encoding.UTF8);
    string sRecord = sReader.ReadToEnd();
    MemoryStream memStream =
new MemoryStream();
    StreamWriter sw =
new StreamWriter(memStream);
    inmsg.BodyPart.Data
= memStream;
    inmsg.BodyPart.Data.Position
= 0;
    //"\r\n" is the delimeter for the the record
    string[] separator
= new string[]
{ "\r\n" };
    string[] strArray
= sRecord.Split(separator,
StringSplitOptions.None);
    //Loop untill the last line (i.e ignore the trailer)
    for (int n
= 1; n < strArray.Length; n++)
        sw.Write((strArray[n
- 1] +
"\r\n"));
    sw.Flush();
    memStream.Flush();
    memStream.Position
= 0;
    inmsg.BodyPart.Data
= memStream;
    inmsg.BodyPart.Data.Position
= 0;
    return inmsg;
after Deploying and in Gac, when configuring Receive Pipeline, it shows no properties in Decode stage ?
MBH

Answer 1

There is nothing wrong with your code it removes the lastline, if there is no carriage return on it.
If your input file is like:  
   line1 <cr><lf>
           line2 <cr><lf>
           line3 
The result is: 
           line1 <cr><lf>
           line2 <cr><lf>
But if your input file is like:
             line1 <cr><lf>
              line2 <cr><lf>
              line3 <cr><if>
The result is:
             line1<cr><lf>
             line2<cr><lf>
            <empty line>
So when you have a carriage return on the last line, it results in an empty line, can this be the cause of your problem?