SAPFunctionsOCX.Functions connection error

Hi,
There is an error when assign the connection to SAPFunctionsOCX.Function object.  The connection has been established successfully. 
Here is my code:
sapConnection = (SAPLogonCtrl.Connection)sapLogon.NewConnection();
sapConnection.Logon(0, true);
SAPFunctionsOCX.SAPFunctions sapFunctions = new SAPFunctionsOCX.SAPFunctions();
<b>sapFunctions.Connection = sapConnection;</b>
Thanks
Wilson

Hi Amit and Huseyin Akturk,
Here is my code.  It returns Object for SAPFunctionsOCX.SAPFunctionClass.Connection and {System.__ComObject} in debug mode.  I cannot find out the base class.
<u>Code:</u>
SAPLogonCtrl.SAPLogonControlClass sapLogon = new SAPLogonCtrl.SAPLogonControlClass();
SAPLogonCtrl.Connection sapConnection;
SAPFunctionsOCX.SAPFunctionsClass sapFunctions = new SAPFunctionsOCX.SAPFunctionsClass();
sapConnection = (SAPLogonCtrl.Connection)sapLogon.NewConnection();
sapConnection.Logon(0, false);
sapFunctions.Connection = (Object)sapConnection;
Please help.
Thanks
Wilson

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    4 ETW000  [     dev trc,00000]                     terr=41004D0045005200490043004100                      95  0.022455
    4 ETW000  [     dev trc,00000]                     char=55005400460031003600                              46  0.022501
    4 ETW000  [     dev trc,00000]  Client NLS setting (by OCINlsGetInfo(con=0)): 'AMERICAN_AMERICA.UTF16'
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    4 ETW000                                                                                                 130  0.023303
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    4 ETW000                                                                                                  61  1.207602
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    4 ETW000                                                                                                  68  1.207868
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    4 ETW000  [     dev trc,00000]  -->DbSlControl(con=-1,cmd=52=DBSL_CMD_GET_DBLIB_VERSION)                  33  1.208352
    4 ETW000  [     dev trc,00000]                 -> 'OCI_10201_SHARE, 10.2.0.5.0'                           33  1.208385
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    Siva

    Hi Sivakoti,
    From the logs
    4 ETW000  [     dev trc,00000]     ORA-12541: TNS:no listener                                                                                                  
    4 ETW000                                                                                                  68  1.207868
    4 ETW000  [     dev trc,00000]  SAPUSER error or connect error 99=DBSL_ERR_DB, oerr=12541.                40  1.207908
    4 ETW000  [     dev trc,00000]     DbSlConnect(con=0) -> orc=0, 99=DBSL_ERR_DB                            33  1.207941
    4 ETW000  [    dblink  ,00000]  ***LOG BY2=>sql error 12541  performing CON                               79  1.208020
    4 ETW000  [    dblink  ,00000]  ***LOG BY0=>ORA-12541: TNS:no listener               
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    As you are on windows you may start the listener from Windows services or
    Open command prompt and execute lsnrctl start.
    Hope this helps.
    Regards,
    Deepak Kori

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