C#怎么根据excel数据绘制坐标图

这篇文章主要介绍了C#怎么根据excel数据绘制坐标图的相关知识，内容详细易懂，操作简单快捷，具有一定借鉴价值，相信大家阅读完这篇C#怎么根据excel数据绘制坐标图文章都会有所收获，下面我们一起来看看吧。

效果如下图

界面

代码

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轴数据        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 xList = new List();        List yList = new List();        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系统定义的颜色            //chart1.BackColor = Color.White;            //图表标题,            chart1.Titles.Add("测试数据"); //添加title到titleCollection集合的末尾            chart1.Titles[0].ForeColor = Color.DarkBlue;//设置title的文本颜色            chart1.Titles[0].Font = new Font("微软雅黑", 15f, FontStyle.Regular);//设置title的字体            chart1.Titles[0].Alignment = ContentAlignment.TopCenter;//设置title的对齐方式            //图表区chartAreas            chart1.ChartAreas[0].BackColor = Color.White;//chartAreas背景颜色            chart1.ChartAreas[0].BorderColor = Color.Red;//chartAreas边框颜色            chart1.ChartAreas[0].BackGradientStyle = GradientStyle.None;//chartAreas背景渐变,不使用            //AxisX表示图表的主x轴;             chart1.ChartAreas[0].AxisX.LineColor = Color.Red; //线条颜色            chart1.ChartAreas[0].AxisX.Interval = 0.5;//设置x轴的间隔            chart1.ChartAreas[0].AxisX.Minimum = 0;            chart1.ChartAreas[0].AxisX.Maximum = 25;//Y轴坐标固定，不会随绑定的数据而变            chart1.ChartAreas[0].AxisX.LabelStyle.Interval = 1;//设置X轴标签间距,如果不设置默认为x轴的间隔            chart1.ChartAreas[0].AxisX.IsLabelAutoFit = false;            chart1.ChartAreas[0].AxisX.LabelStyle.Font = new Font("微软雅黑", 13f, FontStyle.Regular); //标签字体            //设置x轴标题的字体样式和颜色            chart1.ChartAreas[0].AxisX.Title = "圆周位置，mm";            chart1.ChartAreas[0].AxisX.TitleFont = new Font("微软雅黑", 15f, FontStyle.Regular);// 标题字体            chart1.ChartAreas[0].AxisX.TitleForeColor = Color.Blue; //轴标题颜色            chart1.ChartAreas[0].AxisX.TextOrientation = TextOrientation.Horizontal;//轴标题文本方向            chart1.ChartAreas[0].AxisX.TitleAlignment = StringAlignment.Far;//轴标题对齐方式            //X轴网格线            chart1.ChartAreas[0].AxisX.MajorGrid.Enabled = false; //启用网格刻度线,一排竖线            //chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = ColorTranslator.FromHtml("#2c4c6d"); //线条颜色            //chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = Color.Yellow;            //y轴            chart1.ChartAreas[0].AxisY.LineColor = Color.Red; //线条颜色            chart1.ChartAreas[0].AxisY.Interval = 0.05;//设置Y轴的间隔            chart1.ChartAreas[0].AxisY.Minimum = 5;//Y轴坐标固定，不会随绑定的数据而变            chart1.ChartAreas[0].AxisY.Maximum = 6.35;//Y轴坐标固定，不会随绑定的数据而变            chart1.ChartAreas[0].AxisY.LabelStyle.Interval = 0.05;//设置X轴标签间距,如果不设置默认为x轴的间隔            //Y坐标轴标题            chart1.ChartAreas[0].AxisY.Title = "圆周半径，mm"; //轴标题            chart1.ChartAreas[0].AxisY.TitleFont = new Font("微软雅黑", 15f, FontStyle.Regular); //标题字体            chart1.ChartAreas[0].AxisY.TitleForeColor = Color.Blue; //轴标题颜色            chart1.ChartAreas[0].AxisY.TextOrientation = TextOrientation.Rotated270; //标题文本方向            chart1.ChartAreas[0].AxisY.TitleAlignment = StringAlignment.Far;            //y轴标签样式            chart1.ChartAreas[0].AxisY.LabelStyle.ForeColor = Color.Black; //标签颜色            chart1.ChartAreas[0].AxisY.LabelStyle.Font = new Font("微软雅黑", 13f, FontStyle.Regular); //标签字体            //Y轴网格线条            chart1.ChartAreas[0].AxisY.MajorGrid.Enabled = false;//一排横线            //chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.Yellow;            //#VAL为y轴的值,#VALX为x轴数据            //chart1.Series[0].Label = "hello";//数据点标签文本              //chart1.Series[0].Label = "#VAL";//数据点标签为其对于的y值            //chart1.Series[0].LabelBackColor = Color.Blue; //数据点标签背景色            //chart1.Series[0].LabelForeColor = Color.White; //数据点标签颜色            //chart1.Series[0].Color = Color.Red; //数据点颜色,数据点之间曲线的颜色            //chart1.Series[0].BorderWidth = 3;//数据点边框宽度，曲线的宽度            //chart1.Series[0].ToolTip = "#VALX:#VAL";//鼠标移动到对应点显示数值 元素的工具提示            chart1.Series[0].ChartType = SeriesChartType.Spline; //图表类型(折线) 绘制该序列的图表类型            Legend legend = new Legend("波形显示");//初始化具有指定的图例名称            legend.Title = "legendTitle"; //图例标题文本            chart1.Series[0].LegendText = legend.Name; //图例中项的文本            chart1.Legends.Add(legend);            chart1.Legends[0].Position.Auto = false; //图例矩形位置 - 元素自动定位标志            //绑定数据            //数据绑定到指定数据源的第一列的x值和y值的集合的数据点            chart1.Series[0].Color = Color.Black;            chart1.Series[0].Points.DataBindXY(x, y);        }    }}

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