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-  Foxtable(狐表)  (http://www.foxtable.com/bbs/index.asp)
--  专家坐堂  (http://www.foxtable.com/bbs/list.asp?boardid=2)
----  辅助线应用求助  (http://www.foxtable.com/bbs/dispbbs.asp?boardid=2&id=187777)
--  作者：YUNSEL
--  发布时间：2023/8/10 16:47:00
--  辅助线应用求助

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按论坛的例子，显示不出线条，这是什么原因呀？

代码如下：
\'设定图表数据,因为只是演示,所以数据只用人工设置
Dim i均值 As Integer = e.Form.Controls("TextBox1").Value
Dim i上限 As Integer = e.Form.Controls("TextBox2").Value
Dim i下限 As Integer = e.Form.Controls("TextBox3").Value

\'计算区间条形
Dim d1 As Date = "2023-7-20"
Dim d2 As Date = "2023-7-28"
Dim t As TimeSpan = d2 - d1
Dim 线长度 As Integer = t.TotalDays

\'生成图表
Dim i As Integer
Dim Chart As WinForm.Chart = e.Form.Controls("Chart1") 
Dim C1Cha As C1.Win.C1Chart.C1Chart = Chart.BaseControl
Dim Series As WinForm.ChartSeries 
Chart.VisualEffect = True 
Chart.ChartType = ChartTypeEnum.Bar 
Chart.DataSource = "A" \'设置绑定表

Chart.SeriesList.Clear() \'清除图表原来的图系
Chart.AxisY.Min = 0 \'指定Y轴的最小值
Chart.AxisY.Max = 150 \'指定Y轴的最大值
Chart.AxisY.Major = 20 \'主刻度间隔值为5000
Series = Chart.SeriesList.Add() \'增加一个图系
Series.X.DataField = "日期" \'X轴绑定到月份列
Series.Y.DataField = "数值" \'Y轴绑定到数量列
Series.Text = "数值"
\'Chart.AxisX.AnnoWithLabels = True
Chart.AxisX.DateType = True \'明确指定X轴是日期型
Chart.AxisX.AnnoFormatString = "yyyy-MM-dd"
Chart.AxisX.AnnoRotation = 45 
Chart.LegendVisible = True 
Chart.LegendCompass = CompassEnum.South

\'增加均值
Dim tl As C1.Win.C1Chart.TrendLine = C1Cha.ChartGroups(0).ChartData.TrendsList.AddNewTrendLine() 
tl.LineStyle.Color = Color.Gold \'线条颜色 
tl.LineStyle.Thickness = 2 \'线宽 
tl.LineStyle.Pattern = 0 \'直线样式 0-5  
Dim zxb = New TbszLine()
zxb.SetXY(New PointF( - 0.5, i均值), New PointF(线长度, i均值))
zxb.SetText("均线")
tl.CustomTrendLine = zxb

\'增加下限
tl = C1Cha.ChartGroups(0).ChartData.TrendsList.AddNewTrendLine() 
tl.LineStyle.Color = Color.red 
tl.LineStyle.Thickness = 2 
tl.LineStyle.Pattern = 2 
zxb = New TbszLine()
zxb.SetXY(New PointF( - 0.5, i下限), New PointF(线长度, i下限))
zxb.SetText("下限")
tl.CustomTrendLine = zxb

\'增加上限
tl = C1Cha.ChartGroups(0).ChartData.TrendsList.AddNewTrendLine() 
tl.LineStyle.Color = Color.BurlyWood 
tl.LineStyle.Thickness = 2 
tl.LineStyle.Pattern = 2
zxb = New TbszLine()
zxb.SetXY(New PointF( - 0.5, i上限), New PointF(线长度, i上限))
zxb.SetText("上限")
tl.CustomTrendLine = zxb

示例项目：
 下载信息  [文件大小：   下载次数： ]
图片点击可在新窗口打开查看点击浏览该文件:柱状图标辅助线的实现.table
--  作者：有点蓝
--  发布时间：2023/8/10 17:02:00
--  
不要使用绑定，改为遍历
--  作者：YUNSEL
--  发布时间：2023/8/10 17:37:00
--  
改了还是不行

\'设定图表数据,因为只是演示,所以数据只用人工设置
Dim i均值 As Integer = e.Form.Controls("TextBox1").Value
Dim i上限 As Integer = e.Form.Controls("TextBox2").Value
Dim i下限 As Integer = e.Form.Controls("TextBox3").Value

\'计算区间条形
Dim d1 As Date = "2023-7-20"
Dim d2 As Date = "2023-7-28"
Dim t1 As TimeSpan = d2 - d1
Dim 线长度 As Integer = t1.TotalDays

\'生成图表
\'Dim i As Integer
Dim Chart As WinForm.Chart = e.Form.Controls("Chart1") 
Dim C1Cha As C1.Win.C1Chart.C1Chart = Chart.BaseControl
Dim Series As WinForm.ChartSeries 
Chart.VisualEffect = True 
Chart.ChartType = ChartTypeEnum.Bar 

Chart.SeriesList.Clear() \'清除图表原来的图系
Chart.AxisY.Min = 0 \'指定Y轴的最小值
Chart.AxisY.Max = 150 \'指定Y轴的最大值
Chart.AxisY.Major = 20 \'主刻度间隔值为5000

Dim t As Table = Tables("A") \'定义一个变量t引用数据表
Series = Chart.SeriesList.Add() \'增加一个图系
Series.Length = t.Rows.Count \'图系的数据点数等于表的行数
For i As Integer = 0 To t.Rows.Count - 1 \'指定每个数据点的位置
    Series.X(i) = t.Rows(i)("日期") \'指定水平坐标
    Series.Y(i) = t.Rows(i)("数值") \'指定垂直坐标
Next

Chart.AxisX.DateType = True \'明确指定X轴是日期型
Chart.AxisX.AnnoFormatString = "yyyy-MM-dd"
Chart.AxisX.AnnoRotation = 45 
Chart.LegendVisible = True 
Chart.LegendCompass = CompassEnum.South

\'增加均值
Dim tl As C1.Win.C1Chart.TrendLine = C1Cha.ChartGroups(0).ChartData.TrendsList.AddNewTrendLine() 
tl.LineStyle.Color = Color.Gold \'线条颜色 
tl.LineStyle.Thickness = 2 \'线宽 
tl.LineStyle.Pattern = 0 \'直线样式 0-5  
Dim zxb = New TbszLine()
zxb.SetXY(New PointF( - 0.5, i均值), New PointF(线长度, i均值))
zxb.SetText("均线")
tl.CustomTrendLine = zxb

\'增加下限
tl = C1Cha.ChartGroups(0).ChartData.TrendsList.AddNewTrendLine() 
tl.LineStyle.Color = Color.red 
tl.LineStyle.Thickness = 2 
tl.LineStyle.Pattern = 2 
zxb = New TbszLine()
zxb.SetXY(New PointF( - 0.5, i下限), New PointF(线长度, i下限))
zxb.SetText("下限")
tl.CustomTrendLine = zxb

\'增加上限
tl = C1Cha.ChartGroups(0).ChartData.TrendsList.AddNewTrendLine() 
tl.LineStyle.Color = Color.BurlyWood 
tl.LineStyle.Thickness = 2 
tl.LineStyle.Pattern = 2
zxb = New TbszLine()
zxb.SetXY(New PointF( - 0.5, i上限), New PointF(线长度, i上限))
zxb.SetText("上限")
tl.CustomTrendLine = zxb
--  作者：有点蓝
--  发布时间：2023/8/10 17:46:00
--  
 下载信息  [文件大小：   下载次数： ]
图片点击可在新窗口打开查看点击浏览该文件:柱状图标辅助线的实现.zip
--  作者：YUNSEL
--  发布时间：2023/8/10 18:45:00
--  
谢谢