主题：label怎么做走势图啊！

Dim d1 As Date = e.Form.Controls("DateTimePicker1").Value

Dim filter1 As String = "1=1"

If e.Form.Controls("RadioButton1").Checked Then

Dim w As Integer = d1.DayOfWeek '算出今天是星期几

Dim dt1 As Date = d1.AddDays(-w) '获取本周的第一天

Dim dt2 As Date = d1.AddDays(6 - w) '获取本周的最后一天

filter1 = "回款日期 >= #" & dt1 & "# and 回款日期 <= #" & dt2 & "#"

Else If e.Form.Controls("RadioButton2").Checked Then

Dim y As Integer = d1.Year

Dim m As Integer = d1.Month

Dim dt1 As New Date(y, m, 1)

Dim dt2 As New Date(y, m, Date.DaysInMonth(y, m)) '获取本月的最后一天

filter1 = "回款日期 >= #" & dt1 & "# and 回款日期 <= #" & dt2 & "#"

Else If e.Form.Controls("RadioButton3").Checked Then

Dim y As Integer = d1.Year

Dim dt1 As New Date(y, 1, 1)

Dim dt2 As New Date(y, 12, 31)

filter1 = "回款日期 >= #" & dt1 & "# and 回款日期 <= #" & dt2 & "#"

Else If e.Form.Controls("RadioButton5").Checked Then

Dim y As Integer = d1.Year

Dim q As Integer = (d1.Month - 1) \ 3 + 1 '计算现在是第几个季度

Dim dt1 As New Date(y, 3 * (q - 1) + 1, 1) '获取本季度的第一天

Dim dt2 As New Date(y, 3 * q, Date.DaysInMonth(y,3 * q)) '获取本季度的最后一天

Filter1 = "回款日期 >= #" & dt1 & "# And 回款日期 <= #" & dt2 & "#"

Else If e.Form.Controls("RadioButton4").Checked Then

filter1 = "1=1"

End If

Dim Chart As WinForm.Chart '定义一个图表变量

Dim Series As WinForm.ChartSeries '定义一个图系变量

Dim dt As DataTable = DataTables("表A") '定义一个变量t引用数据表

Chart = e.Form.Controls("Chart2") ' 引用窗口中的图表

Chart.ChartType = ChartTypeEnum.Bar '图表类型改为Bar(条形)

Chart.SeriesList.Clear() '清除图表原来的图系

Dim qys As List(Of String) = dt.GetValues("区域", "区域 is not null")

Dim tjs As String() = {"销售额","货物成本","物流成本","其它成本","合计成本","利润"}

For Each qy As String In qys

    Series = Chart.SeriesList.Add() '增加一个图系

    Series.Text = qy '设置图系的标题

    Series.Length = qys.Count '设置图系的长度

    For r As Integer = 0 To tjs.length - 1

        Dim sum As Double = dt.Compute("sum(" & tjs(r) & ")", filter1 & " And 区域 = '" & qy & "'")

        Series.X(r) = r

        Series.Y(r) = sum

    Next

Next

msgbox(1)

For r As Integer = 0 To tjs.length - 1

    Chart.AxisX.SetValueLabel(r, tjs(r)) '指定字符表示

Next

Chart.AxisX.AnnoWithLabels = True '启用字符标示

Chart.VisualEffect = True '加上这一行,让你的图表更漂亮

Chart.LegendVisible = True '显示图列