mirror of
https://github.com/gui-cs/Terminal.Gui.git
synced 2026-01-01 16:59:35 +01:00
463 lines
14 KiB
C#
463 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using Terminal.Gui;
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using System.Linq;
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using System.Globalization;
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namespace UICatalog.Scenarios {
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[ScenarioMetadata (Name: "TableEditor", Description: "A Terminal.Gui DataTable editor via TableView")]
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[ScenarioCategory ("Controls")]
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[ScenarioCategory ("Dialogs")]
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[ScenarioCategory ("Text")]
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[ScenarioCategory ("Dialogs")]
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[ScenarioCategory ("TopLevel"), ScenarioCategory ("TableView")]
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public class TableEditor : Scenario
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{
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TableView tableView;
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private MenuItem miAlwaysShowHeaders;
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private MenuItem miHeaderOverline;
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private MenuItem miHeaderMidline;
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private MenuItem miHeaderUnderline;
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private MenuItem miCellLines;
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private MenuItem miFullRowSelect;
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private MenuItem miExpandLastColumn;
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private MenuItem miAlternatingColors;
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private MenuItem miCursor;
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ColorScheme redColorScheme;
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ColorScheme redColorSchemeAlt;
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ColorScheme alternatingColorScheme;
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public override void Setup ()
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{
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Win.Title = this.GetName();
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Win.Y = 1; // menu
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Win.Height = Dim.Fill (1); // status bar
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Top.LayoutSubviews ();
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this.tableView = new TableView () {
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X = 0,
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Y = 0,
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Width = Dim.Fill (),
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Height = Dim.Fill (1),
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};
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var menu = new MenuBar (new MenuBarItem [] {
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new MenuBarItem ("_File", new MenuItem [] {
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new MenuItem ("_OpenBigExample", "", () => OpenExample(true)),
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new MenuItem ("_OpenSmallExample", "", () => OpenExample(false)),
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new MenuItem ("_CloseExample", "", () => CloseExample()),
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new MenuItem ("_Quit", "", () => Quit()),
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}),
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new MenuBarItem ("_View", new MenuItem [] {
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miAlwaysShowHeaders = new MenuItem ("_AlwaysShowHeaders", "", () => ToggleAlwaysShowHeader()){Checked = tableView.Style.AlwaysShowHeaders, CheckType = MenuItemCheckStyle.Checked },
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miHeaderOverline = new MenuItem ("_HeaderOverLine", "", () => ToggleOverline()){Checked = tableView.Style.ShowHorizontalHeaderOverline, CheckType = MenuItemCheckStyle.Checked },
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miHeaderMidline = new MenuItem ("_HeaderMidLine", "", () => ToggleHeaderMidline()){Checked = tableView.Style.ShowVerticalHeaderLines, CheckType = MenuItemCheckStyle.Checked },
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miHeaderUnderline =new MenuItem ("_HeaderUnderLine", "", () => ToggleUnderline()){Checked = tableView.Style.ShowHorizontalHeaderUnderline, CheckType = MenuItemCheckStyle.Checked },
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miFullRowSelect =new MenuItem ("_FullRowSelect", "", () => ToggleFullRowSelect()){Checked = tableView.FullRowSelect, CheckType = MenuItemCheckStyle.Checked },
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miCellLines =new MenuItem ("_CellLines", "", () => ToggleCellLines()){Checked = tableView.Style.ShowVerticalCellLines, CheckType = MenuItemCheckStyle.Checked },
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miExpandLastColumn = new MenuItem ("_ExpandLastColumn", "", () => ToggleExpandLastColumn()){Checked = tableView.Style.ExpandLastColumn, CheckType = MenuItemCheckStyle.Checked },
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new MenuItem ("_AllLines", "", () => ToggleAllCellLines()),
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new MenuItem ("_NoLines", "", () => ToggleNoCellLines()),
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miAlternatingColors = new MenuItem ("Alternating Colors", "", () => ToggleAlternatingColors()){CheckType = MenuItemCheckStyle.Checked},
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miCursor = new MenuItem ("Invert Selected Cell First Character", "", () => ToggleInvertSelectedCellFirstCharacter()){Checked = tableView.Style.InvertSelectedCellFirstCharacter,CheckType = MenuItemCheckStyle.Checked},
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new MenuItem ("_ClearColumnStyles", "", () => ClearColumnStyles()),
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}),
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});
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Top.Add (menu);
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var statusBar = new StatusBar (new StatusItem [] {
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new StatusItem(Key.F2, "~F2~ OpenExample", () => OpenExample(true)),
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new StatusItem(Key.F3, "~F3~ CloseExample", () => CloseExample()),
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new StatusItem(Key.F4, "~F4~ OpenSimple", () => OpenSimple(true)),
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new StatusItem(Key.CtrlMask | Key.Q, "~^Q~ Quit", () => Quit()),
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});
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Top.Add (statusBar);
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Win.Add (tableView);
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var selectedCellLabel = new Label(){
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X = 0,
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Y = Pos.Bottom(tableView),
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Text = "0,0",
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Width = Dim.Fill(),
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TextAlignment = TextAlignment.Right
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};
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Win.Add(selectedCellLabel);
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tableView.SelectedCellChanged += (e)=>{selectedCellLabel.Text = $"{tableView.SelectedRow},{tableView.SelectedColumn}";};
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tableView.CellActivated += EditCurrentCell;
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tableView.KeyPress += TableViewKeyPress;
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SetupScrollBar();
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redColorScheme = new ColorScheme(){
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Disabled = Win.ColorScheme.Disabled,
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HotFocus = Win.ColorScheme.HotFocus,
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Focus = Win.ColorScheme.Focus,
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Normal = Application.Driver.MakeAttribute(Color.Red,Win.ColorScheme.Normal.Background)
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};
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alternatingColorScheme = new ColorScheme(){
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Disabled = Win.ColorScheme.Disabled,
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HotFocus = Win.ColorScheme.HotFocus,
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Focus = Win.ColorScheme.Focus,
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Normal = Application.Driver.MakeAttribute(Color.White,Color.BrightBlue)
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};
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redColorSchemeAlt = new ColorScheme(){
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Disabled = Win.ColorScheme.Disabled,
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HotFocus = Win.ColorScheme.HotFocus,
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Focus = Win.ColorScheme.Focus,
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Normal = Application.Driver.MakeAttribute(Color.Red,Color.BrightBlue)
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};
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}
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private void SetupScrollBar ()
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{
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var _scrollBar = new ScrollBarView (tableView, true);
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_scrollBar.ChangedPosition += () => {
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tableView.RowOffset = _scrollBar.Position;
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if (tableView.RowOffset != _scrollBar.Position) {
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_scrollBar.Position = tableView.RowOffset;
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}
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tableView.SetNeedsDisplay ();
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};
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/*
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_scrollBar.OtherScrollBarView.ChangedPosition += () => {
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_listView.LeftItem = _scrollBar.OtherScrollBarView.Position;
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if (_listView.LeftItem != _scrollBar.OtherScrollBarView.Position) {
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_scrollBar.OtherScrollBarView.Position = _listView.LeftItem;
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}
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_listView.SetNeedsDisplay ();
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};*/
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tableView.DrawContent += (e) => {
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_scrollBar.Size = tableView.Table?.Rows?.Count ??0;
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_scrollBar.Position = tableView.RowOffset;
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// _scrollBar.OtherScrollBarView.Size = _listView.Maxlength - 1;
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// _scrollBar.OtherScrollBarView.Position = _listView.LeftItem;
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_scrollBar.Refresh ();
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};
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}
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private void TableViewKeyPress (View.KeyEventEventArgs e)
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{
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if(e.KeyEvent.Key == Key.DeleteChar){
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if(tableView.FullRowSelect)
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{
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// Delete button deletes all rows when in full row mode
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foreach(int toRemove in tableView.GetAllSelectedCells().Select(p=>p.Y).Distinct().OrderByDescending(i=>i))
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tableView.Table.Rows.RemoveAt(toRemove);
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}
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else{
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// otherwise set all selected cells to null
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foreach(var pt in tableView.GetAllSelectedCells())
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{
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tableView.Table.Rows[pt.Y][pt.X] = DBNull.Value;
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}
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}
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tableView.Update();
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e.Handled = true;
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}
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}
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private void ClearColumnStyles ()
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{
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tableView.Style.ColumnStyles.Clear();
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tableView.Update();
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}
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private void ToggleAlwaysShowHeader ()
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{
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miAlwaysShowHeaders.Checked = !miAlwaysShowHeaders.Checked;
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tableView.Style.AlwaysShowHeaders = miAlwaysShowHeaders.Checked;
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tableView.Update();
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}
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private void ToggleOverline ()
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{
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miHeaderOverline.Checked = !miHeaderOverline.Checked;
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tableView.Style.ShowHorizontalHeaderOverline = miHeaderOverline.Checked;
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tableView.Update();
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}
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private void ToggleHeaderMidline ()
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{
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miHeaderMidline.Checked = !miHeaderMidline.Checked;
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tableView.Style.ShowVerticalHeaderLines = miHeaderMidline.Checked;
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tableView.Update();
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}
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private void ToggleUnderline ()
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{
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miHeaderUnderline.Checked = !miHeaderUnderline.Checked;
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tableView.Style.ShowHorizontalHeaderUnderline = miHeaderUnderline.Checked;
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tableView.Update();
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}
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private void ToggleFullRowSelect ()
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{
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miFullRowSelect.Checked = !miFullRowSelect.Checked;
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tableView.FullRowSelect= miFullRowSelect.Checked;
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tableView.Update();
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}
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private void ToggleExpandLastColumn()
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{
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miExpandLastColumn.Checked = !miExpandLastColumn.Checked;
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tableView.Style.ExpandLastColumn = miExpandLastColumn.Checked;
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tableView.Update();
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}
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private void ToggleCellLines()
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{
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miCellLines.Checked = !miCellLines.Checked;
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tableView.Style.ShowVerticalCellLines = miCellLines.Checked;
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tableView.Update();
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}
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private void ToggleAllCellLines()
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{
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tableView.Style.ShowHorizontalHeaderOverline = true;
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tableView.Style.ShowVerticalHeaderLines = true;
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tableView.Style.ShowHorizontalHeaderUnderline = true;
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tableView.Style.ShowVerticalCellLines = true;
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miHeaderOverline.Checked = true;
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miHeaderMidline.Checked = true;
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miHeaderUnderline.Checked = true;
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miCellLines.Checked = true;
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tableView.Update();
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}
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private void ToggleNoCellLines()
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{
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tableView.Style.ShowHorizontalHeaderOverline = false;
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tableView.Style.ShowVerticalHeaderLines = false;
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tableView.Style.ShowHorizontalHeaderUnderline = false;
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tableView.Style.ShowVerticalCellLines = false;
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miHeaderOverline.Checked = false;
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miHeaderMidline.Checked = false;
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miHeaderUnderline.Checked = false;
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miCellLines.Checked = false;
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tableView.Update();
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}
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private void ToggleAlternatingColors()
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{
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//toggle menu item
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miAlternatingColors.Checked = !miAlternatingColors.Checked;
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if(miAlternatingColors.Checked){
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tableView.Style.RowColorGetter = (a)=> {return a.RowIndex%2==0 ? alternatingColorScheme : null;};
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}
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else
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{
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tableView.Style.RowColorGetter = null;
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}
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tableView.SetNeedsDisplay();
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}
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private void ToggleInvertSelectedCellFirstCharacter ()
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{
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//toggle menu item
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miCursor.Checked = !miCursor.Checked;
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tableView.Style.InvertSelectedCellFirstCharacter = miCursor.Checked;
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tableView.SetNeedsDisplay ();
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}
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private void CloseExample ()
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{
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tableView.Table = null;
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}
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private void Quit ()
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{
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Application.RequestStop ();
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}
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private void OpenExample (bool big)
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{
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tableView.Table = BuildDemoDataTable(big ? 30 : 5, big ? 1000 : 5);
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SetDemoTableStyles();
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}
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private void SetDemoTableStyles ()
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{
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var alignMid = new TableView.ColumnStyle () {
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Alignment = TextAlignment.Centered
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};
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var alignRight = new TableView.ColumnStyle () {
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Alignment = TextAlignment.Right
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};
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var dateFormatStyle = new TableView.ColumnStyle () {
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Alignment = TextAlignment.Right,
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RepresentationGetter = (v)=> v is DateTime d ? d.ToString("yyyy-MM-dd"):v.ToString()
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};
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var negativeRight = new TableView.ColumnStyle () {
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Format = "0.##",
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MinWidth = 10,
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AlignmentGetter = (v)=>v is double d ?
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// align negative values right
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d < 0 ? TextAlignment.Right :
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// align positive values left
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TextAlignment.Left:
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// not a double
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TextAlignment.Left,
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ColorGetter = (a)=> a.CellValue is double d ?
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// color 0 and negative values red
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d <= 0.0000001 ? a.RowIndex%2==0 && miAlternatingColors.Checked ? redColorSchemeAlt: redColorScheme :
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// use normal scheme for positive values
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null:
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// not a double
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null
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};
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tableView.Style.ColumnStyles.Add(tableView.Table.Columns["DateCol"],dateFormatStyle);
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tableView.Style.ColumnStyles.Add(tableView.Table.Columns["DoubleCol"],negativeRight);
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tableView.Style.ColumnStyles.Add(tableView.Table.Columns["NullsCol"],alignMid);
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tableView.Style.ColumnStyles.Add(tableView.Table.Columns["IntCol"],alignRight);
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tableView.Update();
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}
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private void OpenSimple (bool big)
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{
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tableView.Table = BuildSimpleDataTable(big ? 30 : 5, big ? 1000 : 5);
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}
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private void EditCurrentCell (TableView.CellActivatedEventArgs e)
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{
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if(e.Table == null)
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return;
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var oldValue = e.Table.Rows[e.Row][e.Col].ToString();
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bool okPressed = false;
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var ok = new Button ("Ok", is_default: true);
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ok.Clicked += () => { okPressed = true; Application.RequestStop (); };
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var cancel = new Button ("Cancel");
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cancel.Clicked += () => { Application.RequestStop (); };
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var d = new Dialog ("Enter new value", 60, 20, ok, cancel);
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var lbl = new Label() {
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X = 0,
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Y = 1,
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Text = e.Table.Columns[e.Col].ColumnName
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};
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var tf = new TextField()
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{
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Text = oldValue,
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X = 0,
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Y = 2,
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Width = Dim.Fill()
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};
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d.Add (lbl,tf);
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tf.SetFocus();
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Application.Run (d);
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if(okPressed) {
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try {
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e.Table.Rows[e.Row][e.Col] = string.IsNullOrWhiteSpace(tf.Text.ToString()) ? DBNull.Value : (object)tf.Text;
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}
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catch(Exception ex) {
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MessageBox.ErrorQuery(60,20,"Failed to set text", ex.Message,"Ok");
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}
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tableView.Update();
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}
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}
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/// <summary>
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/// Generates a new demo <see cref="DataTable"/> with the given number of <paramref name="cols"/> (min 5) and <paramref name="rows"/>
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/// </summary>
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/// <param name="cols"></param>
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/// <param name="rows"></param>
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/// <returns></returns>
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public static DataTable BuildDemoDataTable(int cols, int rows)
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{
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var dt = new DataTable();
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int explicitCols = 6;
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dt.Columns.Add(new DataColumn("StrCol",typeof(string)));
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dt.Columns.Add(new DataColumn("DateCol",typeof(DateTime)));
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dt.Columns.Add(new DataColumn("IntCol",typeof(int)));
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dt.Columns.Add(new DataColumn("DoubleCol",typeof(double)));
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dt.Columns.Add(new DataColumn("NullsCol",typeof(string)));
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dt.Columns.Add(new DataColumn("Unicode",typeof(string)));
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for(int i=0;i< cols -explicitCols; i++) {
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dt.Columns.Add("Column" + (i+explicitCols));
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}
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var r = new Random(100);
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for(int i=0;i< rows;i++) {
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List<object> row = new List<object>(){
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"Some long text that is super cool",
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new DateTime(2000+i,12,25),
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r.Next(i),
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(r.NextDouble()*i)-0.5 /*add some negatives to demo styles*/,
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DBNull.Value,
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"Les Mise" + Char.ConvertFromUtf32(Int32.Parse("0301", NumberStyles.HexNumber)) + "rables"
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};
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for(int j=0;j< cols -explicitCols; j++) {
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row.Add("SomeValue" + r.Next(100));
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}
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dt.Rows.Add(row.ToArray());
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}
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return dt;
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}
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/// <summary>
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/// Builds a simple table in which cell values contents are the index of the cell. This helps testing that scrolling etc is working correctly and not skipping out any rows/columns when paging
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/// </summary>
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/// <param name="cols"></param>
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/// <param name="rows"></param>
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/// <returns></returns>
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public static DataTable BuildSimpleDataTable(int cols, int rows)
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{
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var dt = new DataTable();
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for(int c = 0; c < cols; c++) {
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dt.Columns.Add("Col"+c);
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}
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for(int r = 0; r < rows; r++) {
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var newRow = dt.NewRow();
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for(int c = 0; c < cols; c++) {
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newRow[c] = $"R{r}C{c}";
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}
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dt.Rows.Add(newRow);
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}
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return dt;
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}
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}
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}
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