How to avoid SSIS FTP task from failing when there are no files to download?

Question

I\'m using SQL Server 2005, and creating ftp tasks within SSIS.

Sometimes there will be files to ftp over, sometimes not. If there are no files, I don\'t want the

Answer 1

This is another solution that is working for me, using built-in stuff and so without manually re-writing the FTP logic:

1) Create a variable in your package called FTP_Error

2) Click your FTP Task, then click "Event Handlers" tab

3) Click within the page to create an event handler for "FTP Task/OnError" - this will fire whenever there is trouble with the FTP

4) From the toolbox, drag in a Script Task item, and double-click to open that up

5) In the first pop-up, ReadOnlyVariables - add System::ErrorCode, System::ErrorDescription

6) In the first pop-up, ReadWriteVariables - add your User::FTP_Error variable

7) Edit Script

8) In the script set your FTP_Error variable to hold the ReadOnlyVariables we had above:

Dts.Variables["FTP_Error"].Value = "ErrorCode:" + Dts.Variables["ErrorCode"].Value.ToString() + ", ErrorDescription=" + Dts.Variables["ErrorDescription"].Value.ToString();

9) Save and close script

10) Hit "OK" to script task

11) Go back to "Control Flow" tab

12) From the FTP task, OnError go to a new Script task, and edit that

13) ReadOnlyVariables: User::FTP_Error from before

14) Now, when there are no files found on the FTP, the error code is -1073573501 (you can find the error code reference list here: http://msdn.microsoft.com/en-us/library/ms345164.aspx)

15) In your script, put in the logic to do what you want - if you find a "no files found" code, then maybe you say task successful. If not, then task failed. And your normal flow can handle this as you wish:

if (Dts.Variables["FTP_Error"].Value.ToString().Contains("-1073573501"))
{
  // file not found - not a problem
  Dts.TaskResult = (int)ScriptResults.Success;
}
else
{
  // some other error - raise alarm!
  Dts.TaskResult = (int)ScriptResults.Failure;
}

And from there your Succeeded/Failed flow will do what you want to do with it.