<%@ Page Language="C#" Description="dotnetCHARTING Component"%>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.IO" %>

<script runat="server">
SeriesCollection getRandomData()
{
    // 设置TempDirectory=“temp”属性时，一定要保证有该文件夹，否则会在当前线程文件夹下生成No Data图片
      SeriesCollection SC = new SeriesCollection();
      int[] myDay = new int []{1,2,3,4,5,6,7,8,9,10,11,12};
      int[] myLine1 = new int[] { 2, 3, 11, 4, 5, 6, 7, 8, 9, 8, 9, 8 };
      int[] myLine2 = new int[] { 10, 1, 21, 1, 2, 2, 1, 1, 1, 1, 1, 13 };
      int[] myLine3 = new int[] { 5, 12, 11, 14, 21, 18, 31, 41, 51, 51, 21, 43 };
      int[] myLine4 = new int[] { 15, 2, 5, 4, 2, 8, 3, 4, 5, 5, 2, 4 };
      ArrayList cc = new ArrayList();
      cc.Add(myLine1);
      cc.Add(myLine2);
      cc.Add(myLine3);
      cc.Add(myLine4);
      for(int a = 0; a <4; a++)
      {
            Series s = new Series();
            s.Name = "Line " + (a+1);
            for(int b = 0; b < myDay.Length; b++)
            {
                  Element e = new Element();
                  e.Name = "Element: " + b;
                  e.YValue = ((int[])cc[a])[b];
                  e.XValue = myDay[b];
               //   e.SmartLabel.Text = ;//自定义数据点的显示样式
                  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;
}

void Page_Load(Object sender,EventArgs e)
{
    string dirPath;
    if (!Page.IsPostBack)
    {
        dirPath = Server.MapPath(".") + @"temp\";
        if (Directory.Exists(dirPath))
        {
            DirectoryInfo dir = new DirectoryInfo(dirPath);
            if (dir.GetFiles().Length > 50)
            {
                foreach (FileInfo f in dir.GetFiles())
                {
                    f.Delete();
                }
            }
        }
        dirPath = Server.MapPath(".") ;
        DirectoryInfo adminDir = new DirectoryInfo(dirPath);
        foreach (FileInfo fi in adminDir.GetFiles())
        {
            if (fi.Extension.ToLower() == ".png")
            {
                fi.Delete();
            }
        }
    }
   
   
   
   
    /*标题框设置*/
      Chart.Title="访问量统计图";
      Chart.TitleBox.Position = TitleBoxPosition.Center;
      Chart.TitleBox.Background.Color = Color.LightBlue;
      Chart.TitleBox.CornerTopLeft = BoxCorner.Cut;
      Chart.TitleBox.CornerTopRight = BoxCorner.Cut;
   
      Chart.Type = ChartType.Scatter;//数据图形显示方式
   
      Chart.Debug = true;

      Chart.ImageFormat = ImageFormat.Png;//生成的图表文件类型
      Chart.DefaultElement.ShowValue = true;//显示坐标点的值
      Chart.Use3D = false;
      Chart.DefaultSeries.Type = SeriesType.Line;//数据图形类型
      //Chart.DefaultElement.SmartLabel.DynamicDisplay = false;
     //坐标轴设置
      Chart.DefaultAxis.Line.StartCap = System.Drawing.Drawing2D.LineCap.RoundAnchor;//坐标轴线条开始端点
      Chart.DefaultAxis.Line.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor; //坐标轴线条结束端点
      Chart.DefaultAxis.Line.Width = 4;//坐标轴线条大小
   
      Chart.XAxis.Interval = 1;//x轴的最小刻度
      Chart.YAxis.Interval = 5;//y轴的最小刻度
      //Chart.XAxis.Maximum = 12;//X轴的最大值,默认为坐标点最大值
      //Chart.YAxis.Maximum = 100;//Y轴的最大值,默认为坐标点最大值
     // Chart.DefaultSeries.DefaultElement.Marker.Type = ElementMarkerType.FivePointStar;
      Chart.DefaultSeries.Element.Marker.Type = ElementMarkerType.Circle; //坐标点的图形

      // Set a default transparency
      Chart.DefaultSeries.DefaultElement.Transparency = 40;//线条透明度

      Chart.XAxis.Label.Text = "月份";//x坐标名称
      Chart.YAxis.Label.Text = "人数";//y坐标命名
      Chart.TempDirectory = "temp";//图片存放路径
      Chart.Width = 600;//报表图宽度
      Chart.Height = 650;//报表图高度
    
      // Add the random data.
      SeriesCollection sc = new SeriesCollection();
      sc = getRandomData();
      double sum = sc.Calculate("", Calculation.Sum).Calculate("", Calculation.Sum).YValue;//sum of YAxis       
      Chart.LegendBox.HeaderLabel.Text = "Total:" + sum.ToString();//注释提示框
      Chart.SeriesCollection.Add(sc);//为图表添加数据源
      string filePicture = Chart.FileManager.SaveImage();//返回带文件名的路径,如 temp\dnc-2vt63wfc.png
     // Response.Write(filePicture.ToString());

}
</script>
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Gallery Sample </title></head>
<body>
<div style="text-align:center">
<dotnet:Chart id="Chart" runat="server"></dotnet:Chart>
</div>
</body>
</html> 

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