Question

我想通过点击保存按钮将绘制的图形保存为JPEG图像。请帮我解决这个问题。这是我绘制的grapg看起来像。

这是我用来绘制图表的代码。

 private void Output_Load(object sender, EventArgs e)
        {

            List<Graph> ObservingData = new List<Graph>(); // List to store all available Graph objects from the CSV

            // Loops through each lines in the CSV
            foreach (string line in System.IO.File.ReadAllLines(pathToCsv).Skip(1)) // .Skip(1) is for skipping header
            {
                // here line stands for each line in the csv file

                string[] InCsvLine = line.Split(',');

                // creating an object of type Graph based on the each csv line

                Graph Inst1 = new Graph();


                Inst1.AvI = double.Parse(InCsvLine[1]);
                Inst1.AvE = double.Parse(InCsvLine[2]);

                chart1.Series["Speed"].YAxisType = AxisType.Primary;
                chart1.Series["Speed"].Points.AddXY(Inst1.Date.AvI, Inst1.AvE);
                chart1.Series["Speed"].ChartType = SeriesChartType.FastLine;

            }
        }

这是我.csv文件数据的一部分，如下所示;

Name,AvI,AvE,Test
Amal,3.28000,100,TRUE
Kamal,3.30000,150,FALSE
Ann,3.32000,200,FALSE
Jery,3.34000,220,FALSE
TaW,3.39000,130,FALSE
Nane,3.40000,125,TRUE
Petter,3.42000,300,TRUE
Sam,3.46000,265,TRUE
Daniyel,3.50000,245,TRUE
Don,3.62000,146,FALSE
Zip,3.64000,201,FALSE
Sera,3.68000,300,FALSE
Perera,3.70000,200,TRUE
Dam,3.90000,170,TRUE

Answer 1

您是否尝试在图表控件上使用SaveImage方法？

  public class Chart : Control, ISupportInitialize, IDisposable
  {

   /// <summary>Saves an image to the specified file.</summary>
   /// <param name="imageFileName">The name of the file in which image is saved to.</param>
   /// <param name="format">The image format.</param>
   public void SaveImage(string imageFileName, ImageFormat format)

样本用法

speedChart.SaveImage("speedChart", ImageFormat.Jpeg);

Answer 2

我找到了解决方案。这是为此工作的代码。

 private void btnSave_Click(object sender, EventArgs e)
        {
            SaveFileDialog dlg = new SaveFileDialog();
            if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                this.chart1.SaveImage(dlg.FileName, ChartImageFormat.Jpeg);
            MessageBox.Show("Chart details Successful saved as jpeg image");
        }

如何在C＃中将图表另存为JPEG图像

2 个答案: