What Is a Grid Control and How Do You Choose One for WinForms or ActiveX?

A grid control is a reusable UI component that displays and edits tabular data in rows and columns inside a desktop application. You need one whenever your app has to show structured records — orders, inventory, test results — and let users read, sort, or edit them in place. The choice comes down to three things: your platform (WinForms/.NET, ActiveX/VB6, or VBA inside Office), whether you need bound or unbound data, and how much built-in behavior you want versus what you build yourself.

What a grid control actually does

At minimum, a grid control handles:

• Rendering — drawing cells, headers, and scrollbars, and repainting them without flicker when data changes.
• Navigation and selection — keyboard and mouse movement across cells, rows, and ranges.
• Editing — hosting an editor (text box, checkbox, dropdown) inside a cell and committing the value back to your data.
• Formatting and appearance — per-cell colors, fonts, alignment, and conditional styling.

Everything beyond that — sorting, filtering, grouping, frozen columns, custom cell types — is where built-in controls and third-party controls diverge most.

Bound vs. unbound grids

This distinction drives most selection decisions.

If your data already lives in a database table and you just need to edit it, a bound grid is usually faster to build. If your rows come from a calculation, an in-memory model, or a mix of sources, an unbound grid avoids fighting the data-binding layer.

10Tec positions iGrid specifically as "the ideal choice if you need an unbound grid control for ActiveX/.NET development," so if unbound is your requirement, that's the scenario the product targets.

Comparing the common options

Built-in controls

• DataGridView (WinForms/.NET) — the default for .NET desktop apps. Bound or unbound, editable, extensible through custom cell types. Adequate for many business forms; performance and flicker can degrade with large row counts or frequent updates.
• DataGrid (classic ActiveX/.NET) — the older generation. 10Tec describes iGrid as a "powerful and super-fast replacement" for it, which tells you the built-in option is the baseline being improved on.
• MSFlexGrid (VB6) — a long-standing ActiveX grid, still common in legacy VB6 code. It supports display and limited editing; 10Tec markets iGrid as an "editable replacement for ListView and VB6 MSFlexGrid, with better functionality and optimized flicker-free drawing."
• ListView — not really a grid. It shows items with optional sub-items, but editing is manual. Fine for read-only lists, awkward for editable tables.

Third-party controls

Third-party grids exist mainly to close gaps the built-ins leave: speed with large datasets, flicker-free redraw, richer cell types, and consistent behavior across platforms. iGrid is one example — it ships in both an ActiveX edition and a WinForms .NET edition, so the same component family covers VB6/VBA and VB.NET/C#.

Selection criteria that actually matter

1. Platform. Confirm the control supports your exact target: WinForms .NET (and which .NET version), ActiveX for VB6, or VBA inside Office. iGrid ActiveX is documented as working in Microsoft Word and Excel as a VBA grid control on UserForms, and as a Microsoft Access grid control — so if your grid lives inside an Office form, that's a supported scenario.
2. Bound or unbound. Decide before you shop. Many controls do both, but the object model and documentation are usually optimized for one.
3. Editing support. Read-only display is easy; in-cell editing with validation is where controls differ. Check whether editing is built in or something you implement.
4. Rendering quality. Flicker-free drawing matters as soon as rows update frequently. 10Tec explicitly lists "optimized flicker-free drawing" as a differentiator against MSFlexGrid.
5. High-DPI and theming. If your app runs on modern displays or needs dark mode, verify support. iGrid.NET 14 (released 2026-Apr-06) added dark mode support aligned with the dark mode officially integrated into Windows Forms in .NET 10, ships separate .NET 10 builds, and improves high-DPI support.
6. Learning curve. A simple object model shortens time-to-first-grid. 10Tec claims iGrid's object model "is very simple so you can start to use it in minutes" — worth testing against your own scenario rather than taking at face value.

Integration scenarios to plan for

• WinForms business app (C#/VB.NET): DataGridView is the zero-cost starting point. Move to a third-party grid when you hit performance, flicker, or cell-type limits.
• Legacy VB6 maintenance: MSFlexGrid or DataGrid may already be in place. Replacing them means checking that the new control's API maps onto your existing code.
• Office VBA (Word/Excel/Access): you need an ActiveX control that is explicitly supported on UserForms and in Access forms. This is a narrower field than WinForms, so verify support before committing.
• Mixed codebase: a control family with both ActiveX and .NET editions (like iGrid) can reduce the number of different APIs your team maintains.

How to decide

• Just need a standard editable table in WinForms? Start with DataGridView. It costs nothing and covers most forms.
• Hitting performance or flicker problems, or need richer cell behavior? Evaluate a third-party grid against your actual dataset size and update frequency.
• Working in VB6 or Office VBA? Your realistic options are ActiveX grids. Confirm the control runs on UserForms in the specific Office host you target.
• Need an unbound grid? Prioritize controls designed for unbound use rather than adapting a bound-first control.

The practical next step is to download a demo and reproduce your worst-case scenario — largest dataset, fastest update rate, the cell types you actually need — before choosing. 10Tec publishes a demo installation for iGrid.NET that includes a sample demonstrating the grid's main visual features in dark mode, which is a reasonable way to test the rendering claims directly.