Dim bd1 As New GroupTableBuilder("统计",DataTables("发货台账"))
Dim dt1 As fxDataSource
bd1.Groups.AddDef("公司") '根据型号分组
bd1.Totals.AddDef("金额","发货金额") '对数量进行统计
dt1 = bd1.BuildDataSource()
Dim bd2 As New GroupTableBuilder("统计",DataTables("收款台帐"))
Dim dt2 As fxDataSource
bd2.Groups.AddDef("公司") '根据型号分组
bd2.Totals.AddDef("收款金额") '对数量进行统计
dt2 = bd2.BuildDataSource()
dt1.Combine("公司",dt2,"公司") '将销售统计数据组合到进货统计数据
Tables("窗口1_Table1").DataSource = dt1 '将统计结果绑定到Table
With DataTables("窗口1_Table1").DataCols '用表达式列计算库存数据
.Add("应收款",Gettype(Double), "IsNull([发货金额],0) - ISNULL([收款金额],0)")
End With