ADO.NET获取TIPTOP存储过程的返回值

//在TIPTOP中的操作,使用ODBC數據源連接INFORMIX,其他大同小異

  /*Select*/
  private DataTable OdbcSelect_ndsf(string sql)
  {
   OdbcConnection objOdbcConnection=new OdbcConnection(strOdbcConnection_ndsf);
   objOdbcConnection.Open();
   string strOdbcCommand2=sql;
   OdbcCommand objOdbcCommand=new OdbcCommand(strOdbcCommand2,objOdbcConnection);   
   OdbcDataAdapter objOdbcDataAdapter=new OdbcDataAdapter(objOdbcCommand);
   DataSet DS=new DataSet();
   objOdbcDataAdapter.Fill(DS);
   DataTable dtb=DS.Tables[0];
   objOdbcConnection.Close();
   return dtb;
  }
  /*Update*/
  private void OdbcUpdate_ndsf(string sql)
  {
   OdbcConnection objOdbcConnection=new OdbcConnection(strOdbcConnection_ndsf);
   objOdbcConnection.Open();
   string strOdbcCommand2=sql;
   OdbcCommand objOdbcCommand=new OdbcCommand(strOdbcCommand2,objOdbcConnection); 
   objOdbcCommand.ExecuteNonQuery();    
  
  }




一般性SQL方法

--------------------------------------------
假设有存储过程如下:
---------------------------------------------

CREATE proc sp_uptmp @tmpName varchar(50),@srcPos varchar(255)
as

Begin TRAN
     insert into t_template values(@tmpName,@srcPos)
COMMIT 

return isnull(@@identity,0)
GO

 

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在 ado.net 里面获取返回值的方法为(c#):
------------------------------------------------------------
   SqlConnection dbconn = new SqlConnection(connStr);
   SqlCommand cmd = new SqlCommand("sp_uptmp",dbconn);
   cmd.CommandType = CommandType.StoredProcedure;

   SqlParameter tmpName = cmd.Parameters.Add("@tmpName",SqlDbType.VarChar);
   SqlParameter srcPos = _cmd.Parameters.Add("@srcPos",SqlDbType.VarChar);
   SqlParameter rtnval = cmd.Parameters.Add("rval",SqlDbType.Int);

   tmpName.Direction = ParameterDirection.Input;
   srcPos.Direction = ParameterDirection.Input;
   rtnval.Direction = ParameterDirection.ReturnValue;

   tmpName.Value = "";
   srcPos.Value = "";
   dbconn.Open();
   cmd.ExecuteNonQuery();
   dbconn.Close();

   tmpid = (int)rtnval.Value;  //此处即为返回值