C# WinForm動態添加MSChart控制項

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添加mschart.dll動態連結程式庫添加引用System.Windows.Forms.DataVisualization  

 MSChart控制項作為方便的使用者資料展示控制項，可以方便的使用控制項提供的形狀和展示形式展示資料，早Web應用中用的比較多，這幾天一直在做一個基於Winform的CS結構的示範程式，用到了MSChart，由於一直也不太熟悉MSChart，又是動態自訂添加，所以一點一點的摸索著做起來，動態添加自訂的MSChart到WinForm程式中，上代碼：

1、建立一條曲線形式的Chart

System.Windows.Forms.DataVisualization.Charting.Chart chart1 = new System.Windows.Forms.DataVisualization.Charting.Chart();

//定義一個chart
 System.Windows.Forms.DataVisualization.Charting.ChartArea chartArea1 = new System.Windows.Forms.DataVisualization.Charting.ChartArea();

//定義一個繪圖區域
 System.Windows.Forms.DataVisualization.Charting.Series series1 = new System.Windows.Forms.DataVisualization.Charting.Series();

//定義一個資料列
 chartArea1.Name = "ChartArea1";

//其實沒有必要，可以使用chart1。ChartAreas[0]就可以了
 chart1.ChartAreas.Add(chartArea1);

//完成Chart和chartArea的關聯
 //System.Windows.Forms.DataVisualization.Charting.Legend legend1 = new System.Windows.Forms.DataVisualization.Charting.Legend();
 //legend1.Name = "表徵圖";
 //chart1.Legends.Add(legend1);
 chart1.Name = "chart1";
 series1.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Spline;

//設定線性
 Random rd = new Random();
 double[] num = new double[20];

 for (int i = 0; i < 20; i++)
 {
 int valuey = rd.Next(20, 100);
 DataPoint point = new DataPoint((i + 1), valuey);
 series1.Points.Add(point);
 }

//產生點的座標
 //chart1.Titles[0].Text = "";
 
 series1.ChartArea = "ChartArea1";
 chartArea1.AxisX.Title = "日期";
 chartArea1.AxisY.Title = "值";
 chartArea1.AxisX.Interval = 1;
 chartArea1.AxisY.Interval = 5;
 chartArea1.AxisY.Minimum = 20;
 series1.Legend = "表徵圖";
 series1.Name = "Series1";
 chart1.Text = "測試";
 chart1.Size = new System.Drawing.Size(700, 500);
 //chart1.Location = new System.Drawing.Point(50,120);
 series1.Color = Color.Blue;
 chart1.Text = "ceshi";
 //chart1.Titles[0].Text = "fff";
 chart1.Series.Add(series1);
 //這一句很重要，缺少的話繪圖區域將顯示空白
 //chart1.SizeChanged += new System.EventHandler(DoSizeChanged);
 //chart1.AllowDrop = true;
 chart1.BackColor = Color.FromArgb(243, 223, 193);

//設定chart背景顏色
 chartArea1.BackColor = Color.FromArgb(243, 223, 193);

//設定c繪圖區域背景顏色
 series1.BorderWidth = 2;
 series1.IsValueShownAsLabel = true;

//是否顯示Y的值

 //this.groupBox9.Controls.Add(chart1);
 this.panel21.Controls.Add(chart1);
 chart1.Visible = true;
 //this.label10.Visible = true;
 //this.label10.Text = "【" + tn.Name + "】圖";
 chart1.Titles.Add("【" + tn.Name + "】圖");
 //為Chart1添加標題
 chartArea1.AxisX.IsMarginVisible = true;

//是否顯示X軸兩端的空白

2、在上述chart的基礎上添加一條線

Control[] controls = this.groupBox9.Controls.Find("chart1",true);

//找到已經有的Chart1
 System.Windows.Forms.DataVisualization.Charting.Chart ch = (System.Windows.Forms.DataVisualization.Charting.Chart)controls[0];
 System.Windows.Forms.DataVisualization.Charting.Series series2 = new System.Windows.Forms.DataVisualization.Charting.Series();

//新定義一個資料項目
 Random rd=new Random();
 for (int i = 0; i < ch.Series[0].Points.Count; i++)
 {
 int valuey=rd.Next(20,100);
 DataPoint point = new DataPoint((i + 1), valuey);
 series2.Points.Add(point);
 }
 series2.Color = Color.FromArgb(rd.Next(100, 255), rd.Next(0, 150), rd.Next(0, 255));
 series2.BorderWidth = 2;
 series2.ChartType = ((System.Windows.Forms.DataVisualization.Charting.Chart)this.panel21.Controls[0]).Series[0].ChartType;

//定義線性和原有的線條形狀一致
 series2.IsValueShownAsLabel = true;
 ch.Series.Add(series2);

//添加資料列

3、減少一條曲線

Control[] controls = this.groupBox9.Controls.Find("chart1", true);
 System.Windows.Forms.DataVisualization.Charting.Chart ch = (System.Windows.Forms.DataVisualization.Charting.Chart)controls[0];
 if (ch.Series.Count>1)
 {
 //MessageBox.Show(this, "去掉一條線！", "資訊提示");
 int i = ch.Series.Count - 1;
 while (i>1)
 {
 if (ch.Series[i].Points.Count>0)
 {
 break;
 }
 i -=1;
 }

 ch.Series[i].Points.Clear();
 this.toolStripStatusLabel2.Text = "減少對比曲線完成！";
 }
 else
 {
 MessageBox.Show(this, "繪圖區域至少要有一條線！", "資訊提示");
 
 }

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