怎么点与点不能链接起来呢？

已解决！

我的一部分程序，供你参考（我这个是wpf里面托管的winform，不太一样）
中间有一句· newSeries1.ChartType = SeriesChartType.Spline '曲线类型Spline
应该是你想要的。大部分chart的用法基本都在下面了~
window1.chart1.ChartAreas.Clear() '清除所有绘图区
Dim newChartAreas1 As New ChartArea("Default") '新增绘图区
window1.chart1.ChartAreas.Add(newChartAreas1)
window1.chart1.ChartAreas("Default").BackColor = System.Drawing.Color.White ' Color.FromName("white") '设置绘图区颜色
window1.chart1.ChartAreas("Default").BackGradientStyle = GradientStyle.TopBottom '设置绘图区颜色渐变方式
window1.chart1.ChartAreas("Default").AxisX.IsMarginVisible = True
'Chart1.ChartAreas("Default").Area3DStyle.Enable3D = True '启用3D显示
window1.chart1.ChartAreas("Default").AxisX.Title = "轴向节点" 'X轴名称
window1.chart1.ChartAreas("Default").AxisX.Minimum = 1
window1.chart1.ChartAreas("Default").AxisX.Maximum = 14
window1.chart1.ChartAreas("Default").AxisY.Title = "归一化轴向功率分布" 'Y轴名称
window1.chart1.ChartAreas("Default").AxisY.Minimum = 0
window1.chart1.ChartAreas("Default").AxisY.Maximum = 2
window1.chart1.Titles.Clear()
Dim newTitles1 As New Title("轴向功率分布") '建立标题
newTitles1.Text = "轴向功率分布"
window1.chart1.Titles.Add(newTitles1)
window1.chart1.Series.Clear() '清除所有数据集
Dim number As Single = 8
Dim newSeries1 As New Series("组件" + Str(number)) '新增数据集
newSeries1.ChartType = SeriesChartType.Spline '曲线类型Spline
newSeries1.BorderWidth = 2
newSeries1.Color = System.Drawing.Color.Red '曲线颜色
newSeries1.XValueType = ChartValueType.Auto
newSeries1.IsValueShownAsLabel = True
window1.chart1.Series.Add(newSeries1)
For i = 1 To 14 Step 1
window1.chart1.Series("组件" + Str(number)).Points.AddXY(i, 1.521)
Next
window1.Title = "组件" + Str(number)
window1.Height = 500
window1.Width = 500
window1.Show()

楼主请问如何让chart横纵坐标在读取不确定数据情况下保留小数点后二位