多个统计

统计不同产品的订单数、订购数量：

Dim doc As New PrintDoc
Dim rt As New prt.RenderText
Dim ra As New prt.RenderArea
Dim Agg1 As New prt.DataBinding.Aggregate("Sum")
Dim Agg2 As New prt.DataBinding.Aggregate("Count")

ra.DataBinding.DataSource = BindTables("订单") '将容器绑定到订单表
ra.DataBinding.Grouping.Expressions.Add("Fields!产品.Value") '根据产品进行分组
ra.Style.Spacing.Bottom = 2
doc.body.Children.Add(ra)

rt.Text= "[Fields!产品.Value]"
ra.Children.Add(rt)

rt = New prt.RenderText
rt.Text= " 订单数: [Aggregates!Count.Value]"
ra.Children.Add(rt)

rt = New prt.RenderText
rt.Text= " 订购数: [Aggregates!Sum.Value]"
ra.Children.Add(rt)

agg1.DataBinding = ra.DataBinding '这个一定要设置为ra的DataBinding，因为agg1统计的分组来自于ra定义的分组
agg1.Running = 1 '分组统计
agg1.ExpressionText = "Fields!数量.Value" '统计字段
doc.DataSchema.Aggregates.Add(agg1)'定义好的统计必须添加到报表的DataSchema中

agg2.DataBinding = ra.DataBinding '这个一定要设置为rt的DataBinding，因为agg1统计的分组来自于rt定义的分组
agg2.Running = 1 '分组统计
agg2.ExpressionText = "Fields!产品.Value" '统计字段
agg2.Func = 2 '统计订单数
doc.DataSchema.Aggregates.Add(agg2)'定义好的统计必须添加到报表的DataSchema中

doc.Preview()