本文实例为大家分享了C#根据excel数据绘制坐标图的具体代码，供大家参考，具体内容如下
效果如下图
界面
代码
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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<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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原文链接：https://blog.csdn.net/uotail/article/details/89889711
