专家坐堂-求助：相同键的项Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

Dim yf As WinForm.ComBoBox = e.Form.Controls("ComboBox27")

If e.Form.Controls("RadioButton47").Checked = True

Dim g1 As New GroupTableBuilder("统计表1", DataTables("btcbxm"))

Dim dt1 As fxDataSource

g1.Groups.AddDef("xmzx")

g1.Groups.AddDef("xmxm")

g1.Totals.AddDef("xmxm", AggregateEnum.Count, "分序")

g1.Filter = "[xmzx] is not Null"

dt1 = g1.BuildDataSource()

Dim g2 As New GroupTableBuilder("统计表1", DataTables("btcbmx"))

Dim dt2 As fxDataSource

g2.Groups.AddDef("mxny")

g2.Groups.AddDef("mxxm")

g2.Groups.AddDef("mxbm")

g2.Totals.AddDef("je","部门金额")

g2.VerticalTotal = True

g2.GrandProportion = True

g2.Filter = "[mxny] = \'" & yf.text & "\' "

dt2 = g2.BuildDataSource()

Dim nms1 As String() = {"xmxm"}

Dim nms2 As String() = {"mxxm"}

dt1.Combine(nms1,dt2,nms2)

Tables("统计总表_Table130").DataSource = dt1

Tables("统计总表_Table130").Cols("分序").Visible = False

Tables("统计总表_Table130").Cols("mxny").Visible = False

Tables("统计总表_Table130").AutoSizeCols()

End If

运行后系统提示：已添加了具有相同键的项。

请问是哪个项，如何解决！