主题：时间推算

If e.DataCol.Name = "下单时间" Then
    Dim d As Date = e.DataRow("下单时间")
    Dim td As Date = new Date(d.Year, d.Month, d.Day)
    If d = Nothing Then
        e.DataRow("取报告") = Nothing
    ElseIf d.hour>=10 AndAlso d.hour < 13 Then
        e.DataRow("取报告") = td.AddHours(15)
    ElseIf d.hour>=13 AndAlso d.hour < 17 Then
        e.DataRow("取报告") = td.AddHours(19)
    ElseIf d.hour>=17 AndAlso d.hour < 21 Then
        e.DataRow("取报告") = td.AddHours(21)
    ElseIf d.hour>=21 AndAlso d.hour < 23 Then
        e.DataRow("取报告") = td.AddHours(25)
    ElseIf d.hour>=23 Then
        e.DataRow("取报告") = td.AddHours(24+12)
    ElseIf d.hour<10 Then
        e.DataRow("取报告") = td.AddHours(12)
    End If
   
End If