c# - How to pass DateTime parameter in SQL query for Oracle DB -

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I want to include some 'timestamp' fields in the SQL query WHERE clause: 

     
 In my code the  created prefix  parameter is defined in the following way  
  ... command. Parameter. Add (": Built-in Project", Miscellaneous. ConvertoOurachtimestamp (built-in property); ... static class diversified {public static OracleTimeStamp convertor oretimestamp (date time date time) {OracleTimeStamp results = new OracleTimeStamp (datetime); Return result; }}   
 And as a result, I get the following exception  
 
 Exception: Additional information: ORA-00932: Incompatible datatype: Expected TIMESTAMP found NUMBER   
 Can you please tell me, how to pass a datetime in SQL query for OKACKAL DB?  
 PS What I have tried: - I have created an Oracle parameter with attributes  
  OracleParameter Para = New OracleParameter (); Paragraph Parameter name = ": built prap"; Paragraph Direction = System.Data.Pameter Direction.Input; Paragraph Oracleb type = Oraclebetype Timestamp; Paragraph Value = Miscellaneous Convertro oakatimstamp (built-in);   
 - I have just passed the date time and I got another exception  
 - I have tried to type the parameter DATE (to_date ()) From), but in this case it seems that I am losing minutes and seconds   
 
 
 unite it :    from person SELECT * where PSN_CREATED_DATE & gt; = TO_TIMESTAMP   
 or use the timestamp parameter in C #, this should be  
  OracleParameter Para = New OracleParameter (": Built Project", Oracle biotype timestamp, parameter direction. Input); Paragraph Value = (Oracle.DataAvetyTypeOrcal Timestamp) value; command.Parameters.Add (paragraph);

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