SSIS API:Bagaimana cara mengetahui Antarmuka untuk melemparkan __COMObject?

Inilah cara saya menarik SQL dari tugas Execute SQL:

                foreach (Executable executable in _Package.Executables)
                {
                    TaskHost taskHost = executable as TaskHost;
                    if (taskHost != null)
                    {
                        string taskHostName = taskHost.Name;
                        System.Diagnostics.Debug.WriteLine("SSIS Task=" + taskHostName);

                        IDTSExecuteSQL iDTSExecuteSQL;

                        try
                        {
                            iDTSExecuteSQL = (IDTSExecuteSQL)taskHost.InnerObject as IDTSExecuteSQL;

                            if (iDTSExecuteSQL != null)
                            {

Sekarang jika saya bisa mengetahui cara mengekstrak sql dari dalam Tugas Data:

 MainPipe pipeline = taskHost.InnerObject as MainPipe;
                                    if (pipeline != null)
                                    {
                                        foreach (IDTSComponentMetaData100 componentMetadata in pipeline.ComponentMetaDataCollection)
                                        {
                                            try
                                            {???

Sekarang apa??