C# how to save data of experiment (9)

Question

Код для Datchik.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AnyaTask9
{
    public class Datchik
    {
        public string Name;
        public List<double> Znachenia = new List<double>();

        public override string ToString()
        {
            return Name;
        }
    }
}

Код для Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AnyaTask9
{
    public partial class Form1 : Form
    {

        public List<Datchik> DatchikList = new List<Datchik>();

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                string[] lines = File.ReadAllLines(ofd.FileName);
                int kolvo = int.Parse(lines[0]);
                int chastota = int.Parse(lines[1]);

                int skip = 2;

                int datchikLinesKolvo = (chastota + 1);
                for (int i = 0; i < kolvo; i++)
                {
                    Datchik datchik = new Datchik();
                    datchik.Name = lines[skip + i * datchikLinesKolvo];
                    for (int j = i * datchikLinesKolvo + 1; j < chastota + i * datchikLinesKolvo + 1; j++)
                    {
                        datchik.Znachenia.Add(double.Parse(lines[skip + j]));
                    }

                    DatchikList.Add(datchik);
                }

                string text = "";
                foreach (string line in lines)
                {
                    text += line + "\n";
                }

                label1.Text = text;
            }

            listBox1.Items.Clear();
            listBox1.Items.AddRange(DatchikList.ToArray());
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (listBox1.SelectedItem is Datchik datchik)
            {
                listBox2.Items.Clear();

                string[] znacheniaStr = new string[datchik.Znachenia.Count];

                for (int i = 0; i < znacheniaStr.Length; i++) {
                    znacheniaStr[i] = datchik.Znachenia[i].ToString();
                }

                listBox2.Items.AddRange(znacheniaStr);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndices.Count > 0)
            {
                SaveFileDialog saveFileDialog = new SaveFileDialog();
                if (saveFileDialog.ShowDialog() == DialogResult.OK)
                {
                    using (StreamWriter sw = new StreamWriter(saveFileDialog.FileName))
                    {
                        sw.WriteLine(listBox1.SelectedIndices.Count);
                        sw.WriteLine(DatchikList[0].Znachenia.Count);

                        foreach (int index in listBox1.SelectedIndices)
                        {
                            Datchik datchik = DatchikList[index];

                            sw.WriteLine(datchik.Name);
                            foreach (double znach in datchik.Znachenia)
                            {
                                sw.WriteLine(znach);
                            }
                        }
                    }
                }
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog folderDialog = new FolderBrowserDialog();
            if (folderDialog.ShowDialog() == DialogResult.OK)
            {
                foreach (Datchik datchik in DatchikList)
                {
                    string datchikFile = Path.Combine(folderDialog.SelectedPath, datchik.Name + ".txt");
                    using (StreamWriter sw = new StreamWriter(datchikFile))
                    {
                        sw.WriteLine(datchik.Name);
                        sw.WriteLine(datchik.Znachenia.Count);
                        foreach (double znach in datchik.Znachenia)
                        {
                            sw.WriteLine(znach);
                        }
                    }
                }
            }
        }
    }
}

Код для Form1.Designer.cs

namespace AnyaTask9
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.listBox2 = new System.Windows.Forms.ListBox();
            this.button2 = new System.Windows.Forms.Button();
            this.button3 = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.SuspendLayout();
            //
            // button1
            //
            this.button1.Location = new System.Drawing.Point(24, 397);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 0;
            this.button1.Text = "Загрузить";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            //
            // listBox1
            //
            this.listBox1.FormattingEnabled = true;
            this.listBox1.Location = new System.Drawing.Point(24, 25);
            this.listBox1.Name = "listBox1";
            this.listBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiSimple;
            this.listBox1.Size = new System.Drawing.Size(229, 355);
            this.listBox1.TabIndex = 1;
            this.listBox1.SelectedIndexChanged += new System.EventHandler(this.listBox1_SelectedIndexChanged);
            //
            // listBox2
            //
            this.listBox2.FormattingEnabled = true;
            this.listBox2.Location = new System.Drawing.Point(259, 25);
            this.listBox2.Name = "listBox2";
            this.listBox2.Size = new System.Drawing.Size(224, 355);
            this.listBox2.TabIndex = 2;
            //
            // button2
            //
            this.button2.Location = new System.Drawing.Point(115, 397);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(124, 23);
            this.button2.TabIndex = 3;
            this.button2.Text = "Сохранить датчик";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            //
            // button3
            //
            this.button3.Location = new System.Drawing.Point(259, 397);
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(98, 23);
            this.button3.TabIndex = 4;
            this.button3.Text = "Сохранить все";
            this.button3.UseVisualStyleBackColor = true;
            this.button3.Click += new System.EventHandler(this.button3_Click);
            //
            // label1
            //
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(502, 25);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(35, 13);
            this.label1.TabIndex = 5;
            this.label1.Text = "label1";
            //
            // Form1
            //
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(800, 450);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.listBox2);
            this.Controls.Add(this.listBox1);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.ListBox listBox2;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button3;
        private System.Windows.Forms.Label label1;
    }
}