映射“DataAdapter.TableMappings”

映射“DataAdapter.TableMappings”

    TableMappings为映射，如果单表映射水晶报表的话，代码直接可以这样子写就可以显示数据在crystalReportViewer1上了。主要代码如下：

            da = new SqlDataAdapter("SELECT  * FROM  InStock_Detail", conn);
            da.TableMappings.Add("Table", "InStock_Detail");
            da.Fill(mydata, "InStock_Detail");//, "InStock_Detail"
            DBReport.InCrystalReport cr = new DBReport.InCrystalReport();
            cr.SetDataSource(mydata);
            crystalReportViewer1.ReportSource = cr;

    如果是两表映射水晶报表的话，代码则要这样子写才能够实现，代码如下：

            da = new SqlDataAdapter("SELECT  * FROM  InStock_Detail,InStock where InStock.voucher_no=InStock_Detail.voucher_no", conn);
            da.TableMappings.Add("Table", "InStock_Detail");//Table名称唯一
            da.TableMappings.Add("Table1", "InStock");//Table1名称唯一

            da.Fill(mydata, "InStock_Detail");//, "InStock_Detail" 
            da.Fill(mydata, "InStock"); 
            DBReport.InCrystalReport cr = new DBReport.InCrystalReport(); 
            cr.SetDataSource(mydata); 
            crystalReportViewer1.ReportSource = cr;