📄 boxcoordinates.aspx
字号:
<%@ Page Language="C#" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>
<HTML>
<HEAD>
<TITLE>.netCHARTING Sample</TITLE>
<script runat="server">
void Page_Load(Object sender,EventArgs e)
{
Chart.Type = ChartType.Combo;//Horizontal;
Chart.Size = "600x350";
Chart.TempDirectory = "temp";
Chart.Debug = true;
Chart.Title = ".netCHARTING Sample";
// This sample demonstrates how the coordinates of boxes on the chart can be acquired after the chart is generated.
// First we setup the data.
// *DYNAMIC DATA NOTE*
// This sample uses random data to populate the chart. To populate
// a chart with database data see the following resources:
// - Classic samples folder
// - Help File > Data Tutorials
// - Sample: features/DataEngine.aspx
SeriesCollection mySC = getRandomData();
// Add the random data.
Chart.SeriesCollection.Add(mySC);
//--------------
// Add an annotation to an element to get its position later.
mySC[1][2].Annotation = new Annotation("element annotation");
// Add an arbirtaty annotation.
Annotation an = new Annotation("This is an annotation");
an.Position = new Point(50,50);
Chart.Annotations.Add(an);
// These two lines will force the chart to generate so the coordinates can be determined.
// We will also get a graphics object we can draw on before we save the final image.
Bitmap bmp = Chart.GetChartBitmap();
Graphics g = Graphics.FromImage(bmp);
// Draw an orange outline around the boxes we get coordinates for.
Pen myPen = new Pen(Color.Orange,2);
g.DrawRectangle(myPen,Chart.TitleBox.GetRectangle());
g.DrawRectangle(myPen,Chart.LegendBox.GetRectangle());
g.DrawRectangle(myPen,Chart.ChartArea.GetRectangle());
g.DrawRectangle(myPen,an.GetRectangle());
g.DrawRectangle(myPen,mySC[1][2].Annotation.GetRectangle());
g.Dispose();
myPen.Dispose();
// Save the final image.
Chart.FileManager.SaveImage(bmp);
// Write the coordinates on the page.
myLabel.Text = "TitleBox Rectangle is: " + Chart.TitleBox.GetRectangle().ToString();
myLabel.Text += "<br>Legend Rectangle is: " + Chart.LegendBox.GetRectangle().ToString();
myLabel.Text += "<br>ChartArea Rectangle is: " + Chart.ChartArea.GetRectangle().ToString();
myLabel.Text += "<br>Annotation Rectangle is: " + an.GetRectangle().ToString();
myLabel.Text += "<br>Element Annotation Rectangle is: " + mySC[1][2].Annotation.GetRectangle().ToString();
}
SeriesCollection getRandomData()
{
SeriesCollection SC = new SeriesCollection();
Random myR = new Random(1);
for(int a = 1; a < 5; a++)
{
Series s = new Series();
s.Name = "Series " + a.ToString();
for(int b = 1; b < 5; b++)
{
Element e = new Element();
e.Name = "Element " + b.ToString();
e.YValue = myR.Next(50);
s.Elements.Add(e);
}
SC.Add(s);
}
// Set Different Colors for our Series
SC[0].DefaultElement.Color = Color.FromArgb(49,255,49);
SC[1].DefaultElement.Color = Color.FromArgb(255,255,0);
SC[2].DefaultElement.Color = Color.FromArgb(255,99,49);
SC[3].DefaultElement.Color = Color.FromArgb(0,156,255);
return SC;
}
</script>
</HEAD>
<BODY>
<DIV align="center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px">
</dotnet:Chart>
<br><asp:Label ID="myLabel" Runat=server></asp:Label>
</DIV>
</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 + -