📄 invertedaxis.aspx
字号:
<%@ Page Language="VB" debug="true" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<script runat="server">
Function getRandomData() As SeriesCollection
Dim SC As New SeriesCollection()
Dim myR As New Random()
Dim a As Integer
For a = 1 To 4
Dim s As New Series()
s.Name = "Series " + CStr(a)
Dim b As Integer
For b = 1 To 4
Dim e As New Element()
e.Name = "Element " + CStr(b)
'e.YValue = -25 + myR.Next(50);
e.YValue = myR.Next(50)
s.Elements.Add(e)
Next b
SC.Add(s)
Next a
Return SC
End Function 'getRandomData
Sub Page_Load(sender As [Object], e As EventArgs)
Chart.Type = ChartType.Combo
Chart.TempDirectory = "temp"
Chart.Debug = True
Chart.Use3D = True
' First we get our data.
Dim sc As SeriesCollection = getRandomData()
' In order to invert the axes we will simulate this with 2 steps.
' 1. We will negate the y values of our data.
Dim s As Series
For Each s In sc
Dim el As Element
For Each el In s.Elements
el.YValue = - el.YValue
Next el
Next s ' Now add the data
Chart.SeriesCollection.Add(sc)
' 2. We will now change the string tick labels of the y axis so they look like positives when they are negative.
Chart.YAxis = Chart.YAxis.Calculate("Y values",New ChangeValueDelegate(AddressOf NegateAxis))
' More: You can try different series types by changing the following line
Chart.DefaultSeries.Type = SeriesType.Cylinder
End Sub 'Page_Load
Function NegateAxis(val As String) As String
' Convert the string number to a double and make it negative.
Dim myNum As Double = - Convert.ToDouble(val)
Return myNum.ToString()
End Function 'NegateAxis
</script>
<HTML><HEAD><TITLE>Inverted Axis</TITLE></HEAD>
<BODY>
<DIV align=center>
<dotnet:Chart id="Chart" runat="server"/>
</DIV>
</BODY>
</BODY>
</HTML>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -