SSIS Script Task is throwing an exception, how to view the message?

Question

SSIS is showing some useless "Target of invocation has thrown an error" along with an equally useless stack trace that shows only the invocation call. Logging is enabled.

Is there a way to view the actual exception message thrown by the package without attaching some debugger?

Solution

Just trap the exception in a try..catch statement and use the FireError method in the catch block:

public void Main()
{
    ...
    try
    {
        ...
        Dts.TaskResult = (int)ScriptResults.Success;
    }
    catch (Exception ex)
    {
        Dts.Events.FireError(0, "ERROR", ex.Message, null, 0);
        Dts.TaskResult = (int)ScriptResults.Failure;
    }
}