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source: trunk/sources/HeuristicLab.Data.Views/3.3/StringConvertibleMatrixView.cs @ 4779

Last change on this file since 4779 was 4779, checked in by mkommend, 12 years ago

Improved statistics section of StringConvertibleMatrixView (ticket #1253).

File size: 22.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.ComponentModel;
25using System.Drawing;
26using System.Linq;
27using System.Text;
28using System.Windows.Forms;
29using HeuristicLab.Common;
30using HeuristicLab.MainForm;
31using HeuristicLab.MainForm.WindowsForms;
32
33namespace HeuristicLab.Data.Views {
34  [View("StringConvertibleMatrix View")]
35  [Content(typeof(IStringConvertibleMatrix), true)]
36  public partial class StringConvertibleMatrixView : AsynchronousContentView {
37    private int[] virtualRowIndizes;
38    private List<KeyValuePair<int, SortOrder>> sortedColumnIndizes;
39    private RowComparer rowComparer;
40
41    public new IStringConvertibleMatrix Content {
42      get { return (IStringConvertibleMatrix)base.Content; }
43      set { base.Content = value; }
44    }
45
46    public override bool ReadOnly {
47      get {
48        if ((Content != null) && Content.ReadOnly) return true;
49        return base.ReadOnly;
50      }
51      set { base.ReadOnly = value; }
52    }
53
54    private bool showRowsAndColumnsTextBox;
55    public bool ShowRowsAndColumnsTextBox {
56      get { return showRowsAndColumnsTextBox; }
57      set {
58        showRowsAndColumnsTextBox = value;
59        UpdateVisibilityOfTextBoxes();
60      }
61    }
62
63    private bool showStatisticalInformation;
64    public bool ShowStatisticalInformation {
65      get { return showStatisticalInformation; }
66      set {
67        showStatisticalInformation = value;
68        UpdateVisibilityOfStatisticalInformation();
69      }
70    }
71
72    public StringConvertibleMatrixView() {
73      InitializeComponent();
74      ShowRowsAndColumnsTextBox = true;
75      ShowStatisticalInformation = true;
76      errorProvider.SetIconAlignment(rowsTextBox, ErrorIconAlignment.MiddleLeft);
77      errorProvider.SetIconPadding(rowsTextBox, 2);
78      errorProvider.SetIconAlignment(columnsTextBox, ErrorIconAlignment.MiddleLeft);
79      errorProvider.SetIconPadding(columnsTextBox, 2);
80      sortedColumnIndizes = new List<KeyValuePair<int, SortOrder>>();
81      rowComparer = new RowComparer();
82    }
83
84    protected override void DeregisterContentEvents() {
85      Content.ItemChanged -= new EventHandler<EventArgs<int, int>>(Content_ItemChanged);
86      Content.Reset -= new EventHandler(Content_Reset);
87      Content.ColumnNamesChanged -= new EventHandler(Content_ColumnNamesChanged);
88      Content.RowNamesChanged -= new EventHandler(Content_RowNamesChanged);
89      base.DeregisterContentEvents();
90    }
91    protected override void RegisterContentEvents() {
92      base.RegisterContentEvents();
93      Content.ItemChanged += new EventHandler<EventArgs<int, int>>(Content_ItemChanged);
94      Content.Reset += new EventHandler(Content_Reset);
95      Content.ColumnNamesChanged += new EventHandler(Content_ColumnNamesChanged);
96      Content.RowNamesChanged += new EventHandler(Content_RowNamesChanged);
97    }
98
99    protected override void OnContentChanged() {
100      base.OnContentChanged();
101      if (Content == null) {
102        rowsTextBox.Text = "";
103        columnsTextBox.Text = "";
104        dataGridView.Rows.Clear();
105        dataGridView.Columns.Clear();
106        virtualRowIndizes = new int[0];
107      } else
108        UpdateData();
109    }
110
111    protected override void SetEnabledStateOfControls() {
112      base.SetEnabledStateOfControls();
113      rowsTextBox.Enabled = Content != null;
114      columnsTextBox.Enabled = Content != null;
115      dataGridView.Enabled = Content != null;
116      rowsTextBox.ReadOnly = ReadOnly;
117      columnsTextBox.ReadOnly = ReadOnly;
118      dataGridView.ReadOnly = ReadOnly;
119    }
120
121    private void UpdateData() {
122      rowsTextBox.Text = Content.Rows.ToString();
123      rowsTextBox.Enabled = true;
124      columnsTextBox.Text = Content.Columns.ToString();
125      columnsTextBox.Enabled = true;
126
127      //DataGridViews with rows but no columns are not allowed !
128      if (Content.Rows == 0 && dataGridView.RowCount != Content.Rows && !Content.ReadOnly)
129        Content.Rows = dataGridView.RowCount;
130      else
131        dataGridView.RowCount = Content.Rows;
132      if (Content.Columns == 0 && dataGridView.ColumnCount != Content.Columns && !Content.ReadOnly)
133        Content.Columns = dataGridView.ColumnCount;
134      else
135        dataGridView.ColumnCount = Content.Columns;
136      ClearSorting();
137
138      UpdateColumnHeaders();
139      UpdateRowHeaders();
140
141      dataGridView.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.ColumnHeader);
142      dataGridView.AutoResizeRowHeadersWidth(DataGridViewRowHeadersWidthSizeMode.AutoSizeToDisplayedHeaders);
143      dataGridView.Enabled = true;
144    }
145
146    protected void UpdateColumnHeaders() {
147      HashSet<string> visibleColumnNames = new HashSet<string>(dataGridView.Columns.OfType<DataGridViewColumn>()
148          .Where(c => c.Visible && !string.IsNullOrEmpty(c.HeaderText)).Select(c => c.HeaderText));
149      if (!visibleColumnNames.Intersect(Content.ColumnNames).Any())
150        visibleColumnNames.Clear();
151
152      for (int i = 0; i < dataGridView.ColumnCount; i++) {
153        if (i < Content.ColumnNames.Count())
154          dataGridView.Columns[i].HeaderText = Content.ColumnNames.ElementAt(i);
155        else
156          dataGridView.Columns[i].HeaderText = "Column " + (i + 1);
157      }
158
159      foreach (DataGridViewColumn column in dataGridView.Columns)
160        column.Visible = visibleColumnNames.Contains(column.HeaderText) || visibleColumnNames.Count == 0;
161    }
162    protected void UpdateRowHeaders() {
163      int index = dataGridView.FirstDisplayedScrollingRowIndex;
164      if (index == -1) index = 0;
165      int updatedRows = 0;
166      int count = dataGridView.DisplayedRowCount(true);
167
168      while (updatedRows < count) {
169        if (virtualRowIndizes[index] < Content.RowNames.Count())
170          dataGridView.Rows[index].HeaderCell.Value = Content.RowNames.ElementAt(virtualRowIndizes[index]);
171        else
172          dataGridView.Rows[index].HeaderCell.Value = "Row " + (index + 1);
173        if (dataGridView.Rows[index].Visible)
174          updatedRows++;
175        index++;
176      }
177    }
178
179    private void Content_RowNamesChanged(object sender, EventArgs e) {
180      if (InvokeRequired)
181        Invoke(new EventHandler(Content_RowNamesChanged), sender, e);
182      else
183        UpdateRowHeaders();
184    }
185    private void Content_ColumnNamesChanged(object sender, EventArgs e) {
186      if (InvokeRequired)
187        Invoke(new EventHandler(Content_ColumnNamesChanged), sender, e);
188      else
189        UpdateColumnHeaders();
190    }
191    private void Content_ItemChanged(object sender, EventArgs<int, int> e) {
192      if (InvokeRequired)
193        Invoke(new EventHandler<EventArgs<int, int>>(Content_ItemChanged), sender, e);
194      else
195        dataGridView.InvalidateCell(e.Value2, e.Value);
196    }
197    private void Content_Reset(object sender, EventArgs e) {
198      if (InvokeRequired)
199        Invoke(new EventHandler(Content_Reset), sender, e);
200      else
201        UpdateData();
202    }
203
204    #region TextBox Events
205    private void rowsTextBox_Validating(object sender, CancelEventArgs e) {
206      if (ReadOnly || Locked)
207        return;
208      int i = 0;
209      if (!int.TryParse(rowsTextBox.Text, out i) || (i <= 0)) {
210        e.Cancel = true;
211        errorProvider.SetError(rowsTextBox, "Invalid Number of Rows (Valid values are positive integers larger than 0)");
212        rowsTextBox.SelectAll();
213      }
214    }
215    private void rowsTextBox_Validated(object sender, EventArgs e) {
216      if (!Content.ReadOnly) Content.Rows = int.Parse(rowsTextBox.Text);
217      errorProvider.SetError(rowsTextBox, string.Empty);
218    }
219    private void rowsTextBox_KeyDown(object sender, KeyEventArgs e) {
220      if (e.KeyCode == Keys.Enter || e.KeyCode == Keys.Return)
221        rowsLabel.Focus();  // set focus on label to validate data
222      if (e.KeyCode == Keys.Escape) {
223        rowsTextBox.Text = Content.Rows.ToString();
224        rowsLabel.Focus();  // set focus on label to validate data
225      }
226    }
227    private void columnsTextBox_Validating(object sender, CancelEventArgs e) {
228      if (ReadOnly || Locked)
229        return;
230      int i = 0;
231      if (!int.TryParse(columnsTextBox.Text, out i) || (i <= 0)) {
232        e.Cancel = true;
233        errorProvider.SetError(columnsTextBox, "Invalid Number of Columns (Valid values are positive integers larger than 0)");
234        columnsTextBox.SelectAll();
235      }
236    }
237    private void columnsTextBox_Validated(object sender, EventArgs e) {
238      if (!Content.ReadOnly) Content.Columns = int.Parse(columnsTextBox.Text);
239      errorProvider.SetError(columnsTextBox, string.Empty);
240    }
241    private void columnsTextBox_KeyDown(object sender, KeyEventArgs e) {
242      if (e.KeyCode == Keys.Enter || e.KeyCode == Keys.Return)
243        columnsLabel.Focus();  // set focus on label to validate data
244      if (e.KeyCode == Keys.Escape) {
245        columnsTextBox.Text = Content.Columns.ToString();
246        columnsLabel.Focus();  // set focus on label to validate data
247      }
248    }
249    #endregion
250
251    #region DataGridView Events
252    private void dataGridView_CellValidating(object sender, DataGridViewCellValidatingEventArgs e) {
253      if (!dataGridView.ReadOnly) {
254        string errorMessage;
255        if (Content != null && !Content.Validate(e.FormattedValue.ToString(), out errorMessage)) {
256          e.Cancel = true;
257          dataGridView.Rows[e.RowIndex].ErrorText = errorMessage;
258        }
259      }
260    }
261    private void dataGridView_CellParsing(object sender, DataGridViewCellParsingEventArgs e) {
262      if (!dataGridView.ReadOnly) {
263        string value = e.Value.ToString();
264        int rowIndex = virtualRowIndizes[e.RowIndex];
265        e.ParsingApplied = Content.SetValue(value, rowIndex, e.ColumnIndex);
266        if (e.ParsingApplied) e.Value = Content.GetValue(rowIndex, e.ColumnIndex);
267      }
268    }
269    private void dataGridView_CellEndEdit(object sender, DataGridViewCellEventArgs e) {
270      dataGridView.Rows[e.RowIndex].ErrorText = string.Empty;
271    }
272    private void dataGridView_CellValueNeeded(object sender, DataGridViewCellValueEventArgs e) {
273      if (Content != null && e.RowIndex < Content.Rows && e.ColumnIndex < Content.Columns) {
274        int rowIndex = virtualRowIndizes[e.RowIndex];
275        e.Value = Content.GetValue(rowIndex, e.ColumnIndex);
276      }
277    }
278
279    private void dataGridView_Scroll(object sender, System.Windows.Forms.ScrollEventArgs e) {
280      this.UpdateRowHeaders();
281    }
282    private void dataGridView_Resize(object sender, EventArgs e) {
283      this.UpdateRowHeaders();
284    }
285
286    private void dataGridView_KeyDown(object sender, KeyEventArgs e) {
287      if (!ReadOnly && e.Control && e.KeyCode == Keys.V)
288        PasteValuesToDataGridView();
289      else if (e.Control && e.KeyCode == Keys.C)
290        CopyValuesFromDataGridView();
291    }
292
293    private void CopyValuesFromDataGridView() {
294      if (dataGridView.SelectedCells.Count == 0) return;
295      StringBuilder s = new StringBuilder();
296      int minRowIndex = dataGridView.SelectedCells[0].RowIndex;
297      int maxRowIndex = dataGridView.SelectedCells[dataGridView.SelectedCells.Count - 1].RowIndex;
298      int minColIndex = dataGridView.SelectedCells[0].ColumnIndex;
299      int maxColIndex = dataGridView.SelectedCells[dataGridView.SelectedCells.Count - 1].ColumnIndex;
300
301      if (minRowIndex > maxRowIndex) {
302        int temp = minRowIndex;
303        minRowIndex = maxRowIndex;
304        maxRowIndex = temp;
305      }
306      if (minColIndex > maxColIndex) {
307        int temp = minColIndex;
308        minColIndex = maxColIndex;
309        maxColIndex = temp;
310      }
311
312      bool addRowNames = dataGridView.AreAllCellsSelected(false) && Content.RowNames.Count() > 0;
313      bool addColumnNames = dataGridView.AreAllCellsSelected(false) && Content.ColumnNames.Count() > 0;
314
315      //add colum names
316      if (addColumnNames) {
317        if (addRowNames)
318          s.Append('\t');
319
320        DataGridViewColumn column = dataGridView.Columns.GetFirstColumn(DataGridViewElementStates.Visible);
321        while (column != null) {
322          s.Append(column.HeaderText);
323          s.Append('\t');
324          column = dataGridView.Columns.GetNextColumn(column, DataGridViewElementStates.Visible, DataGridViewElementStates.None);
325        }
326        s.Remove(s.Length - 1, 1); //remove last tab
327        s.Append(Environment.NewLine);
328      }
329
330      for (int i = minRowIndex; i <= maxRowIndex; i++) {
331        int rowIndex = this.virtualRowIndizes[i];
332        if (addRowNames) {
333          s.Append(Content.RowNames.ElementAt(rowIndex));
334          s.Append('\t');
335        }
336
337        DataGridViewColumn column = dataGridView.Columns.GetFirstColumn(DataGridViewElementStates.Visible);
338        while (column != null) {
339          DataGridViewCell cell = dataGridView[column.Index, i];
340          if (cell.Selected) {
341            s.Append(Content.GetValue(rowIndex, column.Index));
342            s.Append('\t');
343          }
344
345          column = dataGridView.Columns.GetNextColumn(column, DataGridViewElementStates.Visible, DataGridViewElementStates.None);
346        }
347        s.Remove(s.Length - 1, 1); //remove last tab
348        s.Append(Environment.NewLine);
349      }
350      Clipboard.SetText(s.ToString());
351    }
352
353    private void PasteValuesToDataGridView() {
354      string[,] values = SplitClipboardString(Clipboard.GetText());
355      int rowIndex = 0;
356      int columnIndex = 0;
357      if (dataGridView.CurrentCell != null) {
358        rowIndex = dataGridView.CurrentCell.RowIndex;
359        columnIndex = dataGridView.CurrentCell.ColumnIndex;
360      }
361
362      for (int row = 0; row < values.GetLength(1); row++) {
363        if (row + rowIndex >= Content.Rows)
364          Content.Rows = Content.Rows + 1;
365        for (int col = 0; col < values.GetLength(0); col++) {
366          if (col + columnIndex >= Content.Columns)
367            Content.Columns = Content.Columns + 1;
368          Content.SetValue(values[col, row], row + rowIndex, col + columnIndex);
369        }
370      }
371      ClearSorting();
372    }
373    private string[,] SplitClipboardString(string clipboardText) {
374      clipboardText = clipboardText.Remove(clipboardText.Length - Environment.NewLine.Length);  //remove last newline constant
375      string[,] values = null;
376      string[] lines = clipboardText.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
377      string[] cells;
378      for (int i = 0; i < lines.Length; i++) {
379        cells = lines[i].Split('\t');
380        if (values == null)
381          values = new string[cells.Length, lines.Length];
382        for (int j = 0; j < cells.Length; j++)
383          values[j, i] = string.IsNullOrEmpty(cells[j]) ? string.Empty : cells[j];
384      }
385      return values;
386    }
387
388    private void dataGridView_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) {
389      if (Content != null) {
390        if (e.Button == MouseButtons.Left && Content.SortableView) {
391          bool addToSortedIndizes = (Control.ModifierKeys & Keys.Control) == Keys.Control;
392          SortOrder newSortOrder = SortOrder.Ascending;
393          if (sortedColumnIndizes.Any(x => x.Key == e.ColumnIndex)) {
394            SortOrder oldSortOrder = sortedColumnIndizes.Where(x => x.Key == e.ColumnIndex).First().Value;
395            int enumLength = Enum.GetValues(typeof(SortOrder)).Length;
396            newSortOrder = oldSortOrder = (SortOrder)Enum.Parse(typeof(SortOrder), ((((int)oldSortOrder) + 1) % enumLength).ToString());
397          }
398
399          if (!addToSortedIndizes)
400            sortedColumnIndizes.Clear();
401
402          if (sortedColumnIndizes.Any(x => x.Key == e.ColumnIndex)) {
403            int sortedIndex = sortedColumnIndizes.FindIndex(x => x.Key == e.ColumnIndex);
404            if (newSortOrder != SortOrder.None)
405              sortedColumnIndizes[sortedIndex] = new KeyValuePair<int, SortOrder>(e.ColumnIndex, newSortOrder);
406            else
407              sortedColumnIndizes.RemoveAt(sortedIndex);
408          } else
409            if (newSortOrder != SortOrder.None)
410              sortedColumnIndizes.Add(new KeyValuePair<int, SortOrder>(e.ColumnIndex, newSortOrder));
411          Sort();
412        }
413      }
414    }
415
416    protected virtual void ClearSorting() {
417      virtualRowIndizes = Enumerable.Range(0, Content.Rows).ToArray();
418      sortedColumnIndizes.Clear();
419      UpdateSortGlyph();
420    }
421
422    private void Sort() {
423      virtualRowIndizes = Sort(sortedColumnIndizes);
424      UpdateSortGlyph();
425      UpdateRowHeaders();
426      dataGridView.Invalidate();
427    }
428    protected virtual int[] Sort(IEnumerable<KeyValuePair<int, SortOrder>> sortedColumns) {
429      int[] newSortedIndex = Enumerable.Range(0, Content.Rows).ToArray();
430      if (sortedColumns.Count() != 0) {
431        rowComparer.SortedIndizes = sortedColumns;
432        rowComparer.Matrix = Content;
433        Array.Sort(newSortedIndex, rowComparer);
434      }
435      return newSortedIndex;
436    }
437    private void UpdateSortGlyph() {
438      foreach (DataGridViewColumn col in this.dataGridView.Columns)
439        col.HeaderCell.SortGlyphDirection = SortOrder.None;
440      foreach (KeyValuePair<int, SortOrder> p in sortedColumnIndizes)
441        this.dataGridView.Columns[p.Key].HeaderCell.SortGlyphDirection = p.Value;
442    }
443    #endregion
444
445    public class RowComparer : IComparer<int> {
446      public RowComparer() {
447      }
448
449      private List<KeyValuePair<int, SortOrder>> sortedIndizes;
450      public IEnumerable<KeyValuePair<int, SortOrder>> SortedIndizes {
451        get { return this.sortedIndizes; }
452        set { sortedIndizes = new List<KeyValuePair<int, SortOrder>>(value); }
453      }
454      private IStringConvertibleMatrix matrix;
455      public IStringConvertibleMatrix Matrix {
456        get { return this.matrix; }
457        set { this.matrix = value; }
458      }
459
460      public int Compare(int x, int y) {
461        int result = 0;
462        double double1, double2;
463        DateTime dateTime1, dateTime2;
464        TimeSpan timeSpan1, timeSpan2;
465        string string1, string2;
466
467        if (matrix == null)
468          throw new InvalidOperationException("Could not sort IStringConvertibleMatrix if the matrix member is null.");
469        if (sortedIndizes == null)
470          return 0;
471
472        foreach (KeyValuePair<int, SortOrder> pair in sortedIndizes.Where(p => p.Value != SortOrder.None)) {
473          string1 = matrix.GetValue(x, pair.Key);
474          string2 = matrix.GetValue(y, pair.Key);
475          if (double.TryParse(string1, out double1) && double.TryParse(string2, out double2))
476            result = double1.CompareTo(double2);
477          else if (DateTime.TryParse(string1, out dateTime1) && DateTime.TryParse(string2, out dateTime2))
478            result = dateTime1.CompareTo(dateTime2);
479          else if (TimeSpan.TryParse(string1, out timeSpan1) && TimeSpan.TryParse(string2, out timeSpan2))
480            result = timeSpan1.CompareTo(timeSpan2);
481          else {
482            if (string1 != null)
483              result = string1.CompareTo(string2);
484            else if (string2 != null)
485              result = string2.CompareTo(string1) * -1;
486          }
487          if (pair.Value == SortOrder.Descending)
488            result *= -1;
489          if (result != 0)
490            return result;
491        }
492        return result;
493      }
494    }
495
496    private void dataGridView_MouseClick(object sender, System.Windows.Forms.MouseEventArgs e) {
497      if (Content == null) return;
498      if (e.Button == MouseButtons.Right && Content.ColumnNames.Count() != 0)
499        contextMenu.Show(MousePosition);
500    }
501    private void ShowHideColumns_Click(object sender, EventArgs e) {
502      new ColumnsVisibilityDialog(this.dataGridView.Columns.Cast<DataGridViewColumn>()).ShowDialog();
503    }
504
505    private void UpdateVisibilityOfTextBoxes() {
506      rowsTextBox.Visible = columnsTextBox.Visible = showRowsAndColumnsTextBox;
507      rowsLabel.Visible = columnsLabel.Visible = showRowsAndColumnsTextBox;
508      UpdateDataGridViewSizeAndLocation();
509    }
510
511    private void UpdateVisibilityOfStatisticalInformation() {
512      statisticsTextBox.Visible = showStatisticalInformation;
513      UpdateDataGridViewSizeAndLocation();
514    }
515
516    private void UpdateDataGridViewSizeAndLocation() {
517      int headerSize = columnsTextBox.Location.Y + columnsTextBox.Size.Height +
518       columnsTextBox.Margin.Bottom + dataGridView.Margin.Top;
519
520      int offset = showRowsAndColumnsTextBox ? headerSize : 0;
521      dataGridView.Location = new Point(0, offset);
522
523      int statisticsTextBoxHeight = showStatisticalInformation ? statisticsTextBox.Height + statisticsTextBox.Margin.Top + statisticsTextBox.Margin.Bottom : 0;
524      dataGridView.Size = new Size(Size.Width, Size.Height - offset - statisticsTextBoxHeight);
525    }
526
527    private void dataGridView_SelectionChanged(object sender, EventArgs e) {
528      string stringFormat = "{0,20:0.0000}";
529      statisticsTextBox.Text = string.Empty;
530      if (dataGridView.SelectedCells.Count > 1) {
531        List<double> selectedValues = new List<double>();
532        foreach (DataGridViewCell cell in dataGridView.SelectedCells) {
533          double value;
534          if (!double.TryParse(cell.Value.ToString(), out value)) return;
535          selectedValues.Add(value);
536        }
537        if (selectedValues.Count > 1) {
538          StringBuilder labelText = new StringBuilder();
539          labelText.Append("Count: " + string.Format(stringFormat, selectedValues.Count) + "    ");
540          labelText.Append("Sum: " + string.Format(stringFormat, selectedValues.Sum()) + "    ");
541          labelText.Append("Min: " + string.Format(stringFormat, selectedValues.Min()) + "    ");
542          labelText.Append("Max: " + string.Format(stringFormat, selectedValues.Max()) + "    ");
543          labelText.Append("Average: " + string.Format(stringFormat, selectedValues.Average()) + "    ");
544          labelText.Append("Standard Deviation: " + string.Format(stringFormat, selectedValues.StandardDeviation()) + "    ");
545
546          statisticsTextBox.Text = labelText.ToString();
547        }
548      }
549    }
550  }
551}
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