c#根據excel數據繪製座標圖

效果如下圖

界面

代碼

using System;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;

namespace WindowsFormsApp2
{
    public partial class Form1 : Form
    {
        //x和y軸數據
        double[] x = new double[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        double[] y = new double[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        List<Double> xList = new List<Double>();
        List<Double> yList = new List<Double>();
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string fname = "";
            OpenFileDialog fdlg = new OpenFileDialog();
            fdlg.Title = "Excel File Dialog";
            fdlg.InitialDirectory = @"c:\";
            fdlg.Filter = "All files (*.*)|*.*|All files (*.*)|*.*";
            fdlg.FilterIndex = 2;
            fdlg.RestoreDirectory = true;
            if (fdlg.ShowDialog() == DialogResult.OK)
            {
                fname = fdlg.FileName;
            }


            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
            Microsoft.Office.Interop.Excel.Workbook xlWorkbook = xlApp.Workbooks.Open(fname);
            Microsoft.Office.Interop.Excel._Worksheet xlWorksheet = xlWorkbook.Sheets[1];
            Microsoft.Office.Interop.Excel.Range xlRange = xlWorksheet.UsedRange;

            int rowCount = xlRange.Rows.Count;
            int colCount = xlRange.Columns.Count;

            for (int i = 1; i <= rowCount; i++)
            {
                double px = System.Convert.ToDouble(xlRange.Cells[i, 1].Value2.ToString());
                double py = System.Convert.ToDouble(xlRange.Cells[i, 2].Value2.ToString());
                Console.Out.WriteLine("第" + i + "行 :" + px + "," + py);
                xList.Add(px);
                yList.Add(py);
                //for (int j = 1; j <= colCount; j++)
                //{
                //write the value to the Grid  
                //if (xlRange.Cells[i, j] != null && xlRange.Cells[i, j].Value2 != null)
                //{
                //xList.Add(xlRange.Cells[i, j]);

                // Console.WriteLine(xlRange.Cells[i, j].Value2.ToString());
                //add useful things here! 
                // }
                //}
            }
            chart1.Series[0].Points.DataBindXY(xList, yList);


            //cleanup  
            GC.Collect();
            GC.WaitForPendingFinalizers();

            //rule of thumb for releasing com objects:  
            //  never use two dots, all COM objects must be referenced and released individually  
            //  ex: [somthing].[something].[something] is bad  

            //release com objects to fully kill excel process from running in the background  
            Marshal.ReleaseComObject(xlRange);
            Marshal.ReleaseComObject(xlWorksheet);

            //close and release  
            xlWorkbook.Close();
            Marshal.ReleaseComObject(xlWorkbook);

            //quit and release  
            xlApp.Quit();
            Marshal.ReleaseComObject(xlApp);


        }
        //Graphics g = this.CreateGraphics();
        //Pen pen = new Pen(Brushes.Red, 1);
        //g.DrawLine(pen, new Point(30, 50), new Point(250, 250));

        private void Form1_Load(object sender, EventArgs e)
        {
            //控件chart背景色
            //chart1.BackColor = Color.Transparent;//Color.Transparent系統定義的顏色
            //chart1.BackColor = Color.White;
            //圖表標題,
            chart1.Titles.Add("測試數據"); //添加title到titleCollection集合的末尾
            chart1.Titles[0].ForeColor = Color.DarkBlue;//設置title的文本顏色
            chart1.Titles[0].Font = new Font("微軟雅黑", 15f, FontStyle.Regular);//設置title的字體
            chart1.Titles[0].Alignment = ContentAlignment.TopCenter;//設置title的對齊方式

            //圖表區chartAreas
            chart1.ChartAreas[0].BackColor = Color.White;//chartAreas背景顏色
            chart1.ChartAreas[0].BorderColor = Color.Red;//chartAreas邊框顏色
            chart1.ChartAreas[0].BackGradientStyle = GradientStyle.None;//chartAreas背景漸變,不使用


            //AxisX表示圖表的主x軸; 
            chart1.ChartAreas[0].AxisX.LineColor = Color.Red; //線條顏色
            chart1.ChartAreas[0].AxisX.Interval = 0.5;//設置x軸的間隔
            chart1.ChartAreas[0].AxisX.Minimum = 0;
            chart1.ChartAreas[0].AxisX.Maximum = 25;//Y軸座標固定，不會隨綁定的數據而變

            chart1.ChartAreas[0].AxisX.LabelStyle.Interval = 1;//設置X軸標籤間距,如果不設置默認爲x軸的間隔
            chart1.ChartAreas[0].AxisX.IsLabelAutoFit = false;
            chart1.ChartAreas[0].AxisX.LabelStyle.Font = new Font("微軟雅黑", 13f, FontStyle.Regular); //標籤字體

            //設置x軸標題的字體樣式和顏色
            chart1.ChartAreas[0].AxisX.Title = "圓周位置，mm";
            chart1.ChartAreas[0].AxisX.TitleFont = new Font("微軟雅黑", 15f, FontStyle.Regular);// 標題字體
            chart1.ChartAreas[0].AxisX.TitleForeColor = Color.Blue; //軸標題顏色
            chart1.ChartAreas[0].AxisX.TextOrientation = TextOrientation.Horizontal;//軸標題文本方向
            chart1.ChartAreas[0].AxisX.TitleAlignment = StringAlignment.Far;//軸標題對齊方式
            //X軸網格線
            chart1.ChartAreas[0].AxisX.MajorGrid.Enabled = false; //啓用網格刻度線,一排豎線
            //chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = ColorTranslator.FromHtml("#2c4c6d"); //線條顏色
            //chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = Color.Yellow;

            //y軸
            chart1.ChartAreas[0].AxisY.LineColor = Color.Red; //線條顏色
            chart1.ChartAreas[0].AxisY.Interval = 0.05;//設置Y軸的間隔
            chart1.ChartAreas[0].AxisY.Minimum = 5;//Y軸座標固定，不會隨綁定的數據而變
            chart1.ChartAreas[0].AxisY.Maximum = 6.35;//Y軸座標固定，不會隨綁定的數據而變
            chart1.ChartAreas[0].AxisY.LabelStyle.Interval = 0.05;//設置X軸標籤間距,如果不設置默認爲x軸的間隔
            //Y座標軸標題
            chart1.ChartAreas[0].AxisY.Title = "圓周半徑，mm"; //軸標題
            chart1.ChartAreas[0].AxisY.TitleFont = new Font("微軟雅黑", 15f, FontStyle.Regular); //標題字體
            chart1.ChartAreas[0].AxisY.TitleForeColor = Color.Blue; //軸標題顏色
            chart1.ChartAreas[0].AxisY.TextOrientation = TextOrientation.Rotated270; //標題文本方向
            chart1.ChartAreas[0].AxisY.TitleAlignment = StringAlignment.Far;
            //y軸標籤樣式
            chart1.ChartAreas[0].AxisY.LabelStyle.ForeColor = Color.Black; //標籤顏色
            chart1.ChartAreas[0].AxisY.LabelStyle.Font = new Font("微軟雅黑", 13f, FontStyle.Regular); //標籤字體
            //Y軸網格線條
            chart1.ChartAreas[0].AxisY.MajorGrid.Enabled = false;//一排橫線
            //chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.Yellow;

            //#VAL爲y軸的值,#VALX爲x軸數據
            //chart1.Series[0].Label = "hello";//數據點標籤文本  
            //chart1.Series[0].Label = "#VAL";//數據點標籤爲其對於的y值
            //chart1.Series[0].LabelBackColor = Color.Blue; //數據點標籤背景色
            //chart1.Series[0].LabelForeColor = Color.White; //數據點標籤顏色
            //chart1.Series[0].Color = Color.Red; //數據點顏色,數據點之間曲線的顏色
            //chart1.Series[0].BorderWidth = 3;//數據點邊框寬度，曲線的寬度
            //chart1.Series[0].ToolTip = "#VALX:#VAL";//鼠標移動到對應點顯示數值 元素的工具提示
            chart1.Series[0].ChartType = SeriesChartType.Spline; //圖表類型(折線) 繪製該序列的圖表類型

            Legend legend = new Legend("波形顯示");//初始化具有指定的圖例名稱
            legend.Title = "legendTitle"; //圖例標題文本
            chart1.Series[0].LegendText = legend.Name; //圖例中項的文本
            chart1.Legends.Add(legend);
            chart1.Legends[0].Position.Auto = false; //圖例矩形位置 - 元素自動定位標誌

            //綁定數據
            //數據綁定到指定數據源的第一列的x值和y值的集合的數據點
            chart1.Series[0].Color = Color.Black;

            chart1.Series[0].Points.DataBindXY(x, y);
        }
    }
}

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