FastReport报表 不保存连接信息时使用多表数据源（代码）

今天做的报表涉及到一个报表里使用3个数据表，如何将这三个表的数据映射到fastreport中呢，看下面代码。对应的要在fastreport中将表改成这个名字，数据库连接信息就可以不用保存到报表中了。

            btnExportBargain.Enabled = false;            int paperId = Convert.ToInt32(ucDataGridView1.Rows[ucDataGridView1.CurrentRow.Index].Cells[0].Value.ToString());            string conStr = BaseSystemInfo.ConnectionString;            try            {                SqlConnection con = new SqlConnection(conStr);                con.Open();                SqlCommand sqlcmd = new SqlCommand();                sqlcmd.Connection = con;                sqlcmd.CommandText = "select * from [VW_报表打印] where Id=" + paperId+"; select * from VW_报表打印_详细记录 where 询价单id=" + paperId + ";  select * from VW_报表打印_详细记录 where 询价单id=" + paperId + " and 是否采用=1";;;                SqlDataAdapter sda = new SqlDataAdapter(sqlcmd);                sda.TableMappings.Add("Table", "Table");                sda.TableMappings.Add("Table1", "T2");                sda.TableMappings.Add("Table2", "T3");                ds1 = new DataSet();                sda.Fill(ds1);                con.Close();                sda.Dispose();            }            catch (Exception err)            {                MessageBox.Show(err.StackTrace);            }            try            {                FastReport.Report report = new FastReport.Report();                                string filename = @"D:\12.合同商定记录.frx";                report.Load(filename);                report.RegisterData(ds1);                report.GetDataSource("Table").Enabled = true;                report.GetDataSource("T2").Enabled = true;                report.GetDataSource("T3").Enabled = true;                report.Show();            }            catch (Exception err)            {                MessageBox.Show(err.Message);            }            btnExportBargain.Enabled = true;