Progress Telerik UI for ASP.NET AJAX
RadSpreadStreamProcessing for ASP.NET AJAX is a library for generating large spreadsheet documents and exporting them to XLSX and CSV file formats with great performance, minimal memory and less resources.
Directly stream spreadsheet data to maximize performance. The library writes the spreadsheet content directly to a stream without saving the spreadsheet document model in memory.
Append new worksheets to an existing workbook.
Organize data in sections to keep what’s important in view and collapse what distracts you.
Hide individual rows and columns that you temporarily don’t need displayed.
Change the appearance of an individual cell.
Apply a consistent style to all cells across your worksheet. Using cell styles allows you to format multiple cell properties in one step. You can apply a predefined style or create a new one.
Combine two or more adjacent cells into a single one that spans over multiple rows and columns.
You can apply a scale factor to the exported document.
Export a document with selection range and specified active cell of the selection.
Temporarily remove all cell borders from the worksheet to enhance the visual presentation of the data.
Freeze important rows and columns so you can see them no matter where you go in your worksheet.
Opens the spreadsheet on a particular cell or part of the worksheet.