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Create command:
OracleCommand command=new OracleCommand();
command.Connection=conn;
command.CommandType=CommandType.StoredProcedure;
command.CommandText=packageName+"."+procedureName;
Then:
then add parameters for this command
command.parameters.add(new oracleparameter.....)
... ..
After that:
Set values to the parameters...
And :
execute command.