public AskingFormDataSource(AskingForms Type, Forms nextForm)
 {
     NextForm = nextForm;
     if (Type == AskingForms.VariantRowFromFile || Type == AskingForms.StatisticDistrFromFile || Type == AskingForms.IntervalDistrFromFile)
     {
         InitializeComponent();
         openFileDialog1.Filter      = "txt files (*.txt)|*.txt";
         openFileDialog1.FilterIndex = 0;
         openFileDialog1.Title       = "Оберіть вхідний файл";
         if (openFileDialog1.ShowDialog() == DialogResult.OK)
         {
             if (Type == AskingForms.IntervalDistrFromFile)
             {
                 var Dict = new SortedDictionary <Interval, double>();
                 if (ReadIntervalFile(openFileDialog1.FileName, Type, out Dict))
                 {
                     if (nextForm == Forms.IntervalTasksForm)
                     {
                         var form = new IntervalTasksForm(Dict);
                         form.Show();
                     }
                 }
             }
             else
             {
                 var Dict = new SortedDictionary <double, double>();
                 if (ReadFile(openFileDialog1.FileName, Type, out Dict))
                 {
                     if (nextForm == Forms.StaticTasksForm)
                     {
                         var form = new StaticTasksForm(Dict);
                         form.Show();
                     }
                     else if (nextForm == Forms.GraphicsTasksForm)
                     {
                         var form = new GraphicsTasksForm(Dict);
                         form.Show();
                     }
                     else if (nextForm == Forms.SelectNumberOfIntervalsForm)
                     {
                         var form = new SelectNumberOfIntervalsForm(Dict);
                         form.Show();
                     }
                     else if (nextForm == Forms.NumCharTasksForm)
                     {
                         var form = new NumCharTasksForm(Dict);
                         form.Show();
                     }
                     else
                     {
                         throw new InvalidDataException();
                     }
                 }
             }
         }
         Close();
         return;
     }
     this.Type = Type;
     InitializeComponent();
     dataGridView1.RowCount = 1;
     dataGridView1.Rows[0].HeaderCell.Value = "Xi";
     dataGridView1.RowHeadersWidth          = 50;
     dataGridView1.ColumnHeadersVisible     = false;
     dataGridView1.AutoSizeColumnsMode      = DataGridViewAutoSizeColumnsMode.AllCells;
     if (AskingForms.VariantRow == Type)
     {
         label1.Text            = "";
         label4.Text            = "Введіть к-сть чисел:";
         dataGridView1.RowCount = 1;
         dataGridView1.Rows[0].HeaderCell.Value = "Xi";
     }
     else if (Type == AskingForms.StatisticDistr)
     {
         label1.Text            = "";
         label4.Text            = "Введіть к-сть комірок: ";
         dataGridView1.RowCount = 2;
         dataGridView1.Rows[0].HeaderCell.Value = "Xi";
         dataGridView1.Rows[1].HeaderCell.Value = "Ni";
     }
     else if (Type == AskingForms.IntervalDistr)
     {
         label4.Text            = "Введіть к-сть інтервалів: ";
         dataGridView1.RowCount = 2;
         dataGridView1.Rows[0].HeaderCell.Value = "I";
         dataGridView1.Rows[1].HeaderCell.Value = "Ni";
     }
     else
     {
         throw new InvalidDataException();
     }
 }
        private void Button1_Click(object sender, EventArgs e)
        {
            var    Dict    = new SortedDictionary <double, double>();
            double prevR   = 0;
            var    IntDict = new SortedDictionary <Interval, double>();

            for (int i = 0; i < dataGridView1.ColumnCount; i++)
            {
                try
                {
                    if (Type == AskingForms.VariantRow)
                    {
                        double val = double.Parse(dataGridView1[i, 0].Value.ToString(), CultureInfo.InvariantCulture);
                        if (!Dict.ContainsKey(val))
                        {
                            Dict[val] = 0;
                        }
                        Dict[val]++;
                    }
                    else if (Type == AskingForms.StatisticDistr)
                    {
                        double val = double.Parse(dataGridView1[i, 0].Value.ToString(), CultureInfo.InvariantCulture);
                        double n2  = (double)int.Parse(dataGridView1[i, 1].Value.ToString());
                        if (Dict.ContainsKey(val))
                        {
                            MessageBox.Show("Помилка в зчитуванні. Числа в першому рядку не повинні повторюватися!", "Помилка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                            return;
                        }
                        Dict[val] = n2;
                    }
                    else if (Type == AskingForms.IntervalDistr)
                    {
                        string st   = dataGridView1[i, 0].Value.ToString();
                        var    strs = st.Split(',');
                        double l    = double.Parse(strs[0].Substring(1), CultureInfo.InvariantCulture);
                        double r    = double.Parse(strs[1].Substring(1, strs[1].Length - 2), CultureInfo.InvariantCulture);

                        if (i > 0)
                        {
                            if (prevR != l)
                            {
                                throw new InvalidDataException("prevR is not Equal current L");
                            }
                        }
                        Interval intr = new Interval(l, (strs[0][0] == '['), r, (strs[1][strs[1].Length - 1] == ']'));
                        double   n2   = (double)int.Parse(dataGridView1[i, 1].Value.ToString());
                        IntDict[intr] = n2;
                        prevR         = r;
                    }
                }
                catch
                {
                    MessageBox.Show($"Помилка в зчитуванні {i+1} колонки. Перевірьте правильність даних.", "Помилка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
            if (NextForm == Forms.StaticTasksForm)
            {
                var form = new StaticTasksForm(Dict);
                form.Show();
                this.Close();
            }
            else if (NextForm == Forms.GraphicsTasksForm)
            {
                if (Type == AskingForms.IntervalDistr)
                {
                    var form = new GraphicsTasksForm(IntDict);
                    form.Show();
                    Close();
                }
                else
                {
                    var form = new GraphicsTasksForm(Dict);
                    form.Show();
                    this.Close();
                }
            }
            else if (NextForm == Forms.SelectNumberOfIntervalsForm)
            {
                var form = new SelectNumberOfIntervalsForm(Dict);
                form.Show();
                this.Close();
            }
            else if (NextForm == Forms.IntervalTasksForm)
            {
                var form = new IntervalTasksForm(IntDict);
                form.Show();
                this.Close();
            }
            else if (NextForm == Forms.NumCharTasksForm)
            {
                var form = new NumCharTasksForm(Dict);
                form.Show();
                this.Close();
            }
            else
            {
                throw new InvalidDataException();
            }
        }