Tag: #xlsx
6 articles
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Excel Tables in C# — What "Format as Table" Actually Saves, and How to Create One
Excel's "Format as Table" looks like formatting — a coloured header, striped rows — yet not one cell in the saved file carries a fill. What Excel stores is an object: a range, a header row and a style name. This guide opens up the table part of an .xlsx, explains what the 60 built-in styles really contain, and names the three details that decide whether Excel will open the file at all — then builds a table with filter buttons and a totals row in C# with ReoGrid V5.1.
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Build a Receipt Generator in About 30 Lines of C# — Excel Template + ReoGrid
Don't lay out a receipt in code. Design it once in Excel, then let ReoGrid load the template, fill the blanks, save a copy, and print. A complete WinForms app in about 30 lines of C#.
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Reading, Writing, and Displaying Excel Files in VB.NET
A practical guide to working with .xlsx files in VB.NET — reading data, generating reports, and embedding a live spreadsheet viewer inside a WinForms or WPF desktop app. No Office required.
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Display and Edit an Excel File in a WinForms or WPF App with C#
How to embed a working Excel viewer inside a .NET desktop app — load .xlsx, let users edit cells and formulas, save back to disk. Minimal WinForms and WPF examples in C#.
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Export a DataTable to Excel (.xlsx) in C# Without Office Interop
How to write a DataTable out as a real .xlsx file from C# — headers, formats, multiple sheets, and the ASP.NET Core download pattern. Side-by-side examples with ClosedXML, EPPlus, and ReoGrid.
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Reading and Writing Excel Files in C# Without Office Interop
A practical guide to handling .xlsx files from C# without installing Microsoft Office. Compares the main approaches — OpenXML SDK, ClosedXML, EPPlus, NPOI, and ReoGrid — and shows working code for the common cases.