.net调用带游标输出的oracle存储过程

OracleParameter[] paras=
{
new OracleParameter("p_stdate",OracleType.DateTime),
new OracleParameter("p_eddate",OracleType.DateTime),
new OracleParameter("p_pinx",OracleType.VarChar),
new OracleParameter("p_cursor",OracleType.Cursor)
};
paras[0].Value=DateTime.Parse(stdate).AddYears(-1);
paras[1].Value = DateTime.Parse(eddate).AddYears(-1);
paras[2].Value=pxnum;
paras[0].Direction = ParameterDirection.Input;
paras[1].Direction = ParameterDirection.Input;
paras[2].Direction = ParameterDirection.Input;
paras[3].Direction = ParameterDirection.Output;
//paras[3].IsNullable = true;
DataTable dt = ohr.QueryBySqlProc("GetNdxse",paras);

　　Database db = DatabaseFactory.CreateDatabase("oraserver");
　　string sqlCommand = "Static_UserPackage.STATIC_USER_SelectAll";
　　Microsoft.Practices.EnterpriseLibrary.Data.Oracle.OracleCommandWrapper dbCommandWrapper =(Microsoft.Practices.EnterpriseLibrary.Data.Oracle.OracleCommandWrapper)db.GetStoredProcCommandWrapper(sqlCommand);
　　dbCommandWrapper.AddParameter("cur_OUT_f", OracleType.Cursor, 0, ParameterDirection.Output, true, 0, 0, String.Empty, DataRowVersion.Default, Convert.DBNull);
　　dbCommandWrapper.AddParameter("cur_OUT_g", OracleType.Cursor, 0, ParameterDirection.Output, true, 0, 0, String.Empty, DataRowVersion.Default, Convert.DBNull);
　　DataSet dsCustomers = db.ExecuteDataSet(dbCommandWrapper);
　　DataGrid1.DataSource=dsCustomers.Tables[0];
　　DataGrid1.DataBind();
　　DataGrid2.DataSource=dsCustomers.Tables[1];
　　DataGrid2.DataBind();