C＃如何在命令行参数中实现破折号“ – ”选项？

我的C＃类将创建一个GUI，它接收csv文件并相应地绘制线图。 目前，我的图表是使用GUI文件对话框绘制和保存的。

我现在要做的是使用命令行来读取，绘制和保存图形（不需要GUI）。

我可以知道如何使用“-f”标志调用我的Read和Plot类（文件路径，可以有多个csv文件）并使用“-o”标志保存绘制的图形（输出文件路径，只生成1个文件） ）？

谢谢。

Answer 1

你可以用这个：

课程计划：

static class Program { [System.Runtime.InteropServices.DllImport("kernel32.dll")] // ### Edit 3 ### static extern bool AttachConsole(int dwProcessId); // ### Edit 3 ### /// 
The main entry point for the application.
 [STAThread] static void Main(string[] args) { // redirect console output to parent process; // must be before any calls to Console.WriteLine() AttachConsole(-1);// ### Edit 3 ### Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); //program.exe -fc:\\desktop\\1.csv -oc:\\desktop\\1.png var inputFile = new List(); string outputFile = null; if (args.Length > 0) { for (int i = 0; i < args.Length; i++) { string a = args[i].ToLower(); switch (a) { case "-f": for (i = i + 1; i < args.Length ; i++) { string f = args[i]; if (f.StartsWith("-")) { i--; break; } inputFile.Add(f); //get next arg as inputFile } break; case "-o": outputFile = args[++i]; //get next arg as outputFile break; } } if (inputFile.Count > 0 && outputFile != null) { var form = new Form2(); //specify your form class form.showErrorsInConsole = true; // ### Edit 3 ### //form.Visible = true; form.DoReadFiles(inputFile.ToArray()); form.DoPlot(); form.SavePic(outputFile); form.Dispose(); return; } } //else Application.Run(new Form2()); //show GUI //MessageBox.Show("Args:\r\n" + s); } } 

表单类 （包含图表的表单，在我的代码中为Form2）：

 public partial class Form2 : Form { public Form2() { InitializeComponent(); } private void Form2_Load(object sender, EventArgs e) { } List rList = new List(); public bool showErrorsInConsole = false; //### Edit 3 ### public void DoReadFiles(string[] fileNames) { try { rList.Clear(); foreach (String file in fileNames) //if ((myStream = ff.OpenFile()) != null) { Read r = new Read(file); rList.Add(r); } } catch (Exception err) { //Inform the user if we can't read the file if (showErrorsInConsole) //### Edit 3 ### Console.WriteLine("\r\n *** Error: " + err.Message); //### Edit 3 ### else MessageBox.Show(err.Message); } } public void DoPlot(int indX = 0, int indY = 1) { Plot.Draw(chart, rList, indX, indY); } public void SavePic(string outputFile) { bool isPng = outputFile.EndsWith(".png", StringComparison.OrdinalIgnoreCase); chart.SaveImage(outputFile, isPng ? ChartImageFormat.Png : ChartImageFormat.Jpeg); } void openToolStripMenuItem_Click(object sender, EventArgs e) { OpenFileDialog ff = new OpenFileDialog(); ff.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); //"C:\\"; ff.Filter = "csv files (*.csv)|*.csv|All files (*.*)|*.*"; ff.Multiselect = true; ff.FilterIndex = 1; ff.RestoreDirectory = true; if (ff.ShowDialog() == DialogResult.OK) { try { DoReadFiles(ff.FileNames); //Populate the ComboBoxes if (rList.Count > 0) { string[] header = rList[0].header; //header of first file xBox.DataSource = header; yBox.DataSource = header.Clone(); //without Clone the 2 comboboxes link together! } if (yBox.Items.Count > 1) yBox.SelectedIndex = 1; //select second item } catch (Exception err) { //Inform the user if we can't read the file MessageBox.Show(err.Message); } } } private void button1_Click(object sender, EventArgs e) { DoPlot(xBox.SelectedIndex, yBox.SelectedIndex); } } //end class Form2 

课程阅读：

 public class Read { public int nLines { get; private set; } public int nColumns { get; private set; } public string[] header { get; private set; } public float[,] data { get; private set; } public string fileName { get; set; } public string[] section { get; private set; } public Read(string file) { string[] pieces; fileName = Path.GetFileName(file); string[] lines = File.ReadAllLines(file); // read all lines if (lines == null || lines.Length < 2) return; //no data in file header = lines[0].Split(','); //first line is header nLines = lines.Length - 1; //first line is header nColumns = header.Length; //read the numerical data and section name from the file data = new float[nLines, nColumns - 1]; // 1 less than nColumns as last col is sectionName section = new string[nLines]; for (int i = 0; i < nLines; i++) { pieces = lines[i + 1].Split(','); // i(+1) is because first line is header if (pieces.Length != nColumns) { MessageBox.Show("Invalid data at line " + (i + 2) + " of file " + fileName); return; } for (int j = 0; j < nColumns - 1; j++) { float.TryParse(pieces[j], out data[i, j]); //data[i, j] = float.Parse(pieces[j]); } section[i] = pieces[nColumns - 1]; //last item } } } 

类图：

 public class Plot { public static void Draw(Chart chart, List rList, int indX = 0, int indY = 1) { chart.Series.Clear(); //ensure that the chart is empty chart.Legends.Clear(); Legend myLegend = chart.Legends.Add("myLegend"); myLegend.Title = "myTitle"; Color[] colors = new Color[] { Color.Black, Color.Blue, Color.Red, Color.Green, Color.Magenta, Color.DarkCyan, Color.Chocolate, Color.DarkMagenta }; var sectionColors = new Dictionary(); bool separateSections = (rList.Count == 1); // #Edit: 4 int i = 0; int iColor = -1, maxColor = -1; foreach (Read rr in rList) { float[,] data = rr.data; int nLines = rr.nLines; int nColumns = rr.nColumns; string[] header = rr.header; chart.Series.Add("Series" + i); chart.Series[i].ChartType = SeriesChartType.Line; chart.Series[i].LegendText = rr.fileName; // #Edit: 4 if (separateSections) chart.Series[i].IsVisibleInLegend = false; // #Edit: 4 chart.ChartAreas[0].AxisX.LabelStyle.Format = "{F2}"; chart.ChartAreas[0].AxisX.Title = header[indX]; chart.ChartAreas[0].AxisY.Title = header[indY]; for (int j = 0; j < nLines; j++) { int k = chart.Series[i].Points.AddXY(data[j, indX], data[j, indY]); if (separateSections) // #Edit: 4 { string curSection = rr.section[j]; if (sectionColors.ContainsKey(curSection)) { iColor = sectionColors[curSection]; } else { maxColor++; iColor = maxColor; sectionColors[curSection] = iColor; } chart.Series[i].Points[k].Color = colors[iColor]; } } i++; //series# } //end foreach rr //fill legend based on series foreach (var x in sectionColors) { string section = x.Key; iColor = x.Value; myLegend.CustomItems.Add(colors[iColor], section); //new LegendItem() } } } 

Answer 2

您可以使用命令解析器库。 Command Line Parser（ http://commandline.codeplex.com/ ）非常易于使用。

 [Option("f", "input", Required = true] public string InputFile { get; set; } [Option("o", "output", Required = true] public string OutputFile { get; set; } 

Answer 3

如果您正在寻找简单的东西，那么您可以只有一个循环并获得如下值：

 string f=null; string o=null; for (var i = 0; i < args.Length; i++) { if (args[i] == "-f") { f = args[i + 1]; } else if (args[i] == "-o") { o = args[i + 1]; } } if (f != null) { } if (o != null) { }