主题：关于考勤数据指定格式生成表格（项目已经改成内部表了！））

我理你，命令窗口执行：

Dim dt1 As Date = #6/8/2011#
Dim dt2 As Date = #12/31/2011#
Dim dtb As New DataTableBuilder("统计")
dtb.AddDef("name", Gettype(String), 32)
dtb.AddDef("cardno", Gettype(String), 32)
dtb.AddDef("date", Gettype(Date))
dtb.AddDef("t1", Gettype(String))
dtb.AddDef("t2", Gettype(String))
dtb.Build
For Each dr1 As DataRow In DataTables("ZlEmployee").DataRows
    For i As Integer = 0 To (dt2 - dt1).TotalDays
        Dim drs As List(of DataRow) =  DataTables("Kq_Source").Select("CardNo = '" & dr1("CardNo") & "'And FDateTime = #" & dt1.AddDays(i) & "#")
        For n As Integer = 0 To drs.count -1
            Dim dr2 As DataRow = DataTables("统计").Addnew
            dr2("name") = dr1("Name")
            dr2("CardNo") = dr1("CardNo")
            dr2("date") = drs(n)("FDateTime").Date
            If n = 0 Then
                dr2("t1") = Format(drs(n)("FDateTime"),"HH:mm")
            ElseIf n =1then
                dr2("t2") = Format(drs(n)("FDateTime"),"HH:mm")
                Exit For
            End If
        Next
    Next
Next

Dim drs As List(of DataRow) =  DataTables("Kq_Source").Select("CardNo = '" & dr1("CardNo") & "'And FDateTime = #" & dt1.AddDays(i) & "#")

改为：

Dim drs As List(of DataRow) =  DataTables("Kq_Source").Select("CardNo = '" & dr1("CardNo") & "'And FDateTime >= #" & dt1.AddDays(i) & "# And FDateTime < #" & dt1.AddDays(i +1) & "# ")