主题：与上一行的日期的天数计算？

代码

Select Case e.DataCol.Name
    Case  "身份证号", "报销起日", "记录时间"
        If e.DataCol.Name = "记录时间" AndAlso e.DataRow.IsNull(e.DataCol) = False Then
            Dim dr As DataRow = e.DataTable.Find("身份证号 = '" & e.DataRow("身份证号") & "' and 报销起日 = #" & e.DataRow("报销起日") & "# and _Identify <> '" & e.DataRow("_Identify") & "' and 记录时间 <= #" & e.DataRow("记录时间") & "#","记录时间 Desc")
            If dr IsNot Nothing Then
                Dim tp As TimeSpan = e.DataRow("记录时间") - dr("记录时间")
                e.DataRow("天数") = tp.TotalDays
            Else
                e.DataRow("天数") = 0
            End If
        End If
End Select

不要简单的代码都不会改好吧？你最后的项目，能够是别人帮你写好的么？

Select Case e.DataCol.Name
    Case  "身份证号", "报销起日", "记录时间", "报销止日"
        If e.DataCol.Name = "记录时间" AndAlso e.DataRow.IsNull(e.DataCol) = False Then
            Dim dr As DataRow = e.DataTable.Find("身份证号 = '" & e.DataRow("身份证号") & "' and 报销起日 = #" & e.DataRow("报销起日") & "# and _Identify <> '" & e.DataRow("_Identify") & "' and 记录时间 <= #" & e.DataRow("记录时间") & "#","记录时间 Desc")
            If dr IsNot Nothing Then
                Dim tp As TimeSpan = e.DataRow("记录时间") - dr("记录时间")
                e.DataRow("天数") = tp.TotalDays
                dr = e.DataTable.Find("身份证号 = '" & e.DataRow("身份证号") & "' and 报销起日 = #" & e.DataRow("报销起日") & "# And 记录时间 <= #" & e.DataRow("记录时间") & "#","记录时间 Desc")
                If dr IsNot Nothing Then
                    If dr.IsNull("报销止日") Then
                        tp = dr("记录时间") - Date.Today
                        e.DataRow("距今天数") = tp.TotalDays
                    Else
                        tp = dr("记录时间") - dr("报销止日")
                        e.DataRow("距今天数") = tp.TotalDays
                    End If
                End If
            Else
                e.DataRow("天数") = 0
            End If
        End If
End Select

Select Case e.DataCol.Name
    Case  "身份证号", "报销起日", "记录时间", "报销止日"
        If e.DataCol.Name = "记录时间" AndAlso e.DataRow.IsNull(e.DataCol) = False Then
            Dim dr As DataRow = e.DataTable.Find("身份证号 = '" & e.DataRow("身份证号") & "' and 报销起日 = #" & e.DataRow("报销起日") & "# and _Identify <> '" & e.DataRow("_Identify") & "' and 记录时间 <= #" & e.DataRow("记录时间") & "#","记录时间 Desc")
            If dr IsNot Nothing Then
                Dim tp As TimeSpan = e.DataRow("记录时间") - dr("记录时间")
                e.DataRow("天数") = tp.TotalDays
                dr = e.DataTable.Find("身份证号 = '" & e.DataRow("身份证号") & "' and 报销起日 = #" & e.DataRow("报销起日") & "# And 记录时间 <= #" & e.DataRow("记录时间") & "#","记录时间 Desc")
                If dr IsNot Nothing Then
                    If dr.IsNull("报销止日") Then
                        tp = cdate(dr("记录时间")) - Date.Today
                        e.DataRow("距今天数") = tp.TotalDays
                    Else
                        tp = cdate(dr("记录时间")) - cdate(dr("报销止日"))
                        e.DataRow("距今天数") = tp.TotalDays
                    End If
                End If
            Else
                e.DataRow("天数") = 0
            End If
        End If
End Select

 请参照这一段改，你就不能自己写哪怕一点代码吗？

Select Case e.DataCol.Name
    Case  "分类", "处置日期"
        If e.DataRow.IsNull("处置日期") = False Then
            Dim dr As DataRow = e.DataTable.Find("分类 = '" & e.DataRow("分类") & "' and 处置日期 <= #" & e.DataRow("处置日期") & "# and _Identify <> " & e.DataRow("_Identify"),"处置日期 Desc")
            If dr IsNot Nothing Then
                Dim tp As TimeSpan = e.DataRow("处置日期") - dr("处置日期")
                e.DataRow("天数") = tp.TotalDays
               
                tp = Date.Today - cdate(e.DataRow("处置日期"))
                e.DataRow("距今天数") = tp.TotalDays
                e.DataTable.ReplaceFor("距今天数", Nothing, "分类 = '" & e.DataRow("分类") & "' and 处置日期 <= #" & e.DataRow("处置日期") & "# and _Identify <> " & e.DataRow("_Identify"))
            End If
        End If
End Select

Select Case e.DataCol.Name
    Case  "身份证号", "报销起日", "记录时间", "报销止日"
        If e.DataCol.Name = "记录时间" AndAlso e.DataRow.IsNull(e.DataCol) = False Then
            Dim dr As DataRow = e.DataTable.Find("身份证号 = '" & e.DataRow("身份证号") & "' and 报销起日 = #" & e.DataRow("报销起日") & "# and _Identify <> '" & e.DataRow("_Identify") & "' and 记录时间 <= #" & e.DataRow("记录时间") & "#","记录时间 Desc")
            If dr IsNot Nothing Then
                Dim tp As TimeSpan = e.DataRow("记录时间") - dr("记录时间")
                e.DataRow("天数") = tp.TotalDays
                If e.DataRow.IsNull("报销止日") Then
                    tp = cdate(e.DataRow("记录时间")) - Date.Today
                    e.DataRow("距今天数") = tp.TotalDays
                Else
                    tp = cdate(e.DataRow("记录时间")) - cdate(e.DataRow("报销止日"))
                    e.DataRow("距今天数") = tp.TotalDays
                   
                End If
                e.DataTable.ReplaceFor("距今天数", Nothing, "身份证号 = '" & e.DataRow("身份证号") & "' and 报销起日 = #" & e.DataRow("报销起日") & "# and _Identify <> '" & e.DataRow("_Identify") & "' and 记录时间 <= #" & e.DataRow("记录时间") & "#")
               
            Else
                e.DataRow("天数") = 0
            End If
        End If
End Select