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--  作者：lgj716330 --  发布时间：2019/8/17 23:37:00 --  [求助]表达式包含未定义的函数调用 错误提示：表达式包含未定义的函数调用 Average()。 Dim dt As DataTable = DataTables("统计表") Dim filter1,filter2 As String filter1 = "年份 = " & nf1 & " And (" & filter & ")"  filter2 = "年份 = " & nf2 & " And (" & filter & ")"  Dim lj1 As Double = dt.Compute("Average([工时])",filter1)  Dim lj2 As Double = dt.Compute("Average([工时])",filter2) [此贴子已经被作者于2019/8/17 23:37:13编辑过]

--  作者：y2287958 --  发布时间：2019/8/18 14:02:00 --   Avg(工时)