我正在尝试制作一个 winform 应用程序,将数据库中的数据加载绘制到数据网格视图中。 我想要重量(kg)作为X轴,净重作为Y轴;并使用图表类型“Line”。它应该创建列表红点(X,Y),图表将在它们之间画线。 但图表绘制得像柱形图,我不知道如何修复它。我
这是我绘制图表的方法代码
public Chart ConvertToChart(DataGridView dataGridView)
{
// Create a new series for the chart
Series series = new Series();
series.Name = "Data Series";
series.ChartType = SeriesChartType.Column;
// Add data points to the series
foreach (DataGridViewRow row in dataGridView.Rows)
{
// Get the data from the DataGridView
int xValue = Convert.ToInt32(row.Cells[3].Value);
int yValue = Convert.ToInt32(row.Cells[4].Value);
// Add the data point to the series
series.Points.AddXY(xValue, yValue);
}
// Add the series to the chart
chart1.Series.Add(series);
// Return the chart
return chart1;
}
将图表控件从 Visual Studio 添加到 Windows 窗体应用程序(拖放控件)
注意:图表控件已在 VS 2022 中弃用。
参考以下代码:
using System;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;
namespace ChartExample
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
InitializeChart();
}
private void InitializeChart()
{
// Setting up chart parameters
ChartArea chartArea = new ChartArea();
chartArea.AxisX.Title = "X Axis";
chartArea.AxisY.Title = "Y Axis";
chart1.ChartAreas.Add(chartArea);
Series series = new Series();
series.ChartType = SeriesChartType.Line; // or SeriesChartType.Point
series.Name = "MySeries";
// Add some data points
series.Points.AddXY(1, 10);
series.Points.AddXY(2, 20);
series.Points.AddXY(3, 15);
series.Points.AddXY(4, 25);
// Add the series to the chart
chart1.Series.Add(series);
}
}
}