Built-in Cell Types — ReoGrid Docs

There are six built-in cell types.

The six built-in cell types and how each behaves

ws.SetCellType(0, 0, CheckboxCellType.Instance);
ws.SetCellType(1, 0, new DropdownCellType(["Not started", "In progress", "Done"], editable: false));
ws.SetCellType(2, 0, new ProgressCellType(max: 100, color: 0xFF4CAF50));
ws.SetCellType(3, 0, new ButtonCellType("Run"));
ws.SetCellType(4, 0, HyperlinkCellType.Instance);
ws.SetCellType(5, 0, new SparklineCellType(color: 0xFF2196F3));

The list

Type	Created with	Cell value it uses
Checkbox	`CheckboxCellType.Instance`	`bool`
Dropdown	`new DropdownCellType(options, editable)`	`string` (the selection)
Progress bar	`new ProgressCellType(max, color, bidirectional, showText)`	`double`
Button	`new ButtonCellType(text)`	text (the label, when `text` is omitted)
Hyperlink	`HyperlinkCellType.Instance`	`string` (the URL)
Sparkline	`new SparklineCellType(color)`	`string` (comma-separated numbers)

CheckboxCellType and HyperlinkCellType carry no settings, so they share a single Instance.

Checkbox

The value is a bool. Clicking toggles it.

ws.SetCellType(0, 0, CheckboxCellType.Instance);
ws.SetBoolean(0, 0, true);

A formula can count them: COUNTIF(A:A, TRUE).

new DropdownCellType(["Not started", "In progress", "Done"], editable: false)

With editable: true, text outside the option list can be typed in directly (Excel’s “list” validation with “allow other values”).

A click makes the control show a popup. Headless, the descriptor merely returns OpenDropdown and no popup happens.

Progress bar

new ProgressCellType(max: 100, color: 0xFF4CAF50, bidirectional: false, showText: true)

Argument	What it does
`max`	The value corresponding to 100% (default 100)
`color`	The bar color (ARGB)
`bidirectional`	Draw negative values leftwards
`showText`	Show the number over the bar

Button

new ButtonCellType("Run")

Omit text and the cell value becomes the label. Handle the click with the control’s CellButtonClicked event.

control.CellButtonClicked += (s, e) => { /* e carries the position */ };

Hyperlink

ws.SetCellType(0, 0, HyperlinkCellType.Instance);
ws.SetText(0, 0, "https://reogrid.net");

Clicking opens the default browser. Opening it is the control layer’s job, so nothing happens headless.

Sparkline

ws.SetCellType(0, 5, new SparklineCellType());
ws.SetText(0, 5, "3,7,4,9,12,8,15");     // comma-separated numbers

Draws a line chart inside the cell. It is new in V5; V4 had no equivalent.

Types V4 had that V5 does not

DatePicker, RadioButton, NumberInput and the image types are not implemented. When you need one, write it as a custom cell type — there is a worked example in Building a Date-picker Cell.

Persistence

Cell types round-trip through reogrid-json scoped to a range ({r, c, rs, cs, config}). XLSX has no equivalent concept, so exporting turns them back into ordinary cells.