Question

ASP. NET（C#）画曲线图

ASP. NET（C#）画曲线图：用的控件，及详细代码，与数据库联系谢谢！

Answer 1

画图就使用第三方控件WebChart

废话不多说上代码，Chart1是你的控件ID，效果图也附上了：

private void Page_Load(object sender, System.EventArgs e) {

if (Page.IsPostBack==false) {

#region FILLDATA

ChartPointCollection data = new ChartPointCollection();

data.Add(new ChartPoint("Jan",20));

data.Add(new ChartPoint("Feb",40));

data.Add(new ChartPoint("Mar",20));

data.Add(new ChartPoint("Apr",30));

data.Add(new ChartPoint("May",30));

data.Add(new ChartPoint("Jun",0));

data.Add(new ChartPoint("Jul",50));

data.Add(new ChartPoint("Aug",10));

data.Add(new ChartPoint("Sep",90));

data.Add(new ChartPoint("Oct",20));

data.Add(new ChartPoint("Nov",50));

data.Add(new ChartPoint("Dec",60));

#endregion

Chart cl = new SmoothLineChart(data, Color.Black );

cl.Legend = "User A";

cl.Fill.Color = Color.Maroon ;

cl.LineMarker = new CircleLineMarker(6, cl.Fill.Color, cl.Line.Color);

Chart1.Charts.Add(cl);

ChartPointCollection data2;

#region FILLDATA

data2 = new ChartPointCollection();

data2.Add(new ChartPoint("Jan",20));

data2.Add(new ChartPoint("Feb",25));

data2.Add(new ChartPoint("Mar",40));

data2.Add(new ChartPoint("Apr",10));

data2.Add(new ChartPoint("May",30));

data2.Add(new ChartPoint("Jun",10));

data2.Add(new ChartPoint("Jul",30));

data2.Add(new ChartPoint("Aug",20));

data2.Add(new ChartPoint("Sep",44));

data2.Add(new ChartPoint("Oct",33));

data2.Add(new ChartPoint("Nov",13));

data2.Add(new ChartPoint("Dec",26));

#endregion

Chart c2 = new SmoothLineChart(data2, Color.Black);

c2.Legend ="User B";

c2.Fill.Color = Color.Crimson;

c2.LineMarker = new SquareLineMarker(6, c2.Fill.Color, c2.Line.Color);

Chart1.Charts.Add(c2);

Chart c3 = new SmoothLineChart();

#region Chart4

data2 = new ChartPointCollection();

data2.Add(new ChartPoint("Jan",20));

data2.Add(new ChartPoint("Feb",40));

data2.Add(new ChartPoint("Mar",40));

data2.Add(new ChartPoint("Apr",60));

data2.Add(new ChartPoint("May",10));

data2.Add(new ChartPoint("Jun",7));

data2.Add(new ChartPoint("Jul",15));

data2.Add(new ChartPoint("Aug",23));

data2.Add(new ChartPoint("Sep",0));

data2.Add(new ChartPoint("Oct",25));

data2.Add(new ChartPoint("Nov",1));

data2.Add(new ChartPoint("Dec",30));

c3 = new SmoothLineChart(data2);

c3.Legend ="User D";

c3.Fill.Color = Color.Red;

c3.Fill.ForeColor= Color.Blue;

c3.Fill.CenterColor = Color.Black;

c3.LineMarker = new XLineMarker(6, c3.Fill.Color, c3.Line.Color);

Chart1.Charts.Add(c3);

#endregion

data2 = new ChartPointCollection();

data2.Add(new ChartPoint("Jan",10));

data2.Add(new ChartPoint("Feb",24));

data2.Add(new ChartPoint("Mar",18));

data2.Add(new ChartPoint("Apr",22));

data2.Add(new ChartPoint("May",11));

data2.Add(new ChartPoint("Jun",19));

data2.Add(new ChartPoint("Jul",21));

data2.Add(new ChartPoint("Aug",20));

data2.Add(new ChartPoint("Sep",14));

data2.Add(new ChartPoint("Oct",34));

data2.Add(new ChartPoint("Nov",12));

data2.Add(new ChartPoint("Dec",20));

c3 = new SmoothLineChart(data2);

c3.Legend ="User D";

c3.Fill.Color = Color.SaddleBrown;

c3.Fill.ForeColor= Color.Blue;

c3.LineMarker = new DiamondLineMarker(6,Color.Transparent, c3.Line.Color);

Chart1.Charts.Add(c3);

data2 = new ChartPointCollection();

c3 = new SmoothLineChart(new ChartPointCollection(

new ChartPoint[]{

new ChartPoint("Jan",10),

new ChartPoint("Feb",0) ,

new ChartPoint("Mar",20),

new ChartPoint("Apr",70),

new ChartPoint("May",20),

new ChartPoint("Jun",32),

new ChartPoint("Jul",25),

new ChartPoint("Aug",29),

new ChartPoint("Sep",12),

new ChartPoint("Oct",17),

new ChartPoint("Nov",18),

new ChartPoint("Dec",1 )

}

));

c3.Legend ="User E";

c3.Fill.Color = Color.Brown;

c3.Fill.ForeColor= Color.Blue;

c3.Fill.CenterColor = Color.Black;

c3.LineMarker = new TriangleLineMarker(6, c3.Fill.Color, c3.Line.Color);

Chart1.Charts.Add(c3);

Chart1.XAxisFont.StringFormat.Alignment=StringAlignment.Center;

Chart1.XAxisFont.Font = new Font("Tahoma",8);

Chart1.XTitle.Text = "Month";

Chart1.XTitle.Font = new Font("Tahoma", 12, FontStyle.Bold);

Chart1.XTitle.ForeColor = Color.Blue;

Chart1.YTitle.Text = "Bugs";

Chart1.YTitle.Font = new Font("Tahoma", 12, FontStyle.Bold);

Chart1.YTitle.ForeColor = Color.Black;

Chart1.YTitle.StringFormat.FormatFlags = StringFormatFlags.DirectionVertical;

ChartText txt = new ChartText();

txt.Font = new Font("Courier New", 14, FontStyle.Bold | FontStyle.Italic);

txt.Text="Testing";

Chart1.ChartTitle = txt;

Chart1.RedrawChart();

}

}