C#

public DataTable function(int myTableKey)
{
  string msg;
  try
  {
     DataTable dt;
     //some coding... with success
      return dt;
  }
  catch(Exception ex)
  {
      msg = ex.Message;
      return msg; //now here I dont know what to do
  }
}

catch(Exception ex)
{
     //either throw it;
     throw;
     //or log it and make the dt null
     dt = null;
}
return dt;

try
{
}
catch (Exception ex)
{
    throw ex;
}

try { ... }
catch(Exception) { throw; }

catch (Exception ex)
{
   ex.Data.Add("Method", "function");
   ex.Data.Add("myTableKey", myTableKey);
   throw;
} 

Sautin.net wrote:

There really is no way to tell how many clients will be connected to the server, doesn't this open up a can of worms?

• I don't know the format of the label
• I don't know the type and protocol of the printer

1. Read the printer label format in a byte[] from a stream.
2. Add the actual label(s) info such as PN, Qty, Batch ... according to the label specs
3. Send the resulting byte[] to the printer IP

• Use a printServer and add the thermal printer to the print server.(never did it)
• Connect the printer to USB.(only did it on win app)