

Just set the conversion format accordingly and provide the appropriate file name with the extension for the XLS or any other file format. The following code shows how to convert your CSV file into XLSX format in C#.

Set the conversion format to XLSX using SpreadsheetConvertOptions.Load the CSV using the Converter class.Prepare the loading options for CSV file and define separator.The following steps show how to convert the CSV file into MS Excel XLSX format using C#. On the contrary, if you have the comma-separated data and you want to convert it into a well-formatted tabular format, you need to convert that CSV data into XLS or XLSX format. The following code shows how to convert XLS or XLSX into CSV format in C#. Call the Convert method to transform the spreadsheet data or and specific pages into CSV format.Set the conversion format of the output file as CSV using SpreadsheetConvertOptions.Set the starting worksheet number and sheet count.


I will be using this API to convert XLSX into CSV and then CSV into XLS or XLSX using C#. NET API that allows automating the conversion of various documents and image file formats into one another. NET API for Excel Files and CSV Conversion # This article guides to convert Excel spreadsheets of XLS/XLSX format into CSV format and CSV to XLS/XLSX format programmatically using C#. These files can be viewed in any text editor and also in MS Excel for tabular format. On the other hand, CSV files are the comma-separated values, normally used to store tabular data without formatting. You must be well aware of the enhanced capabilities and countless formatting options of Microsoft Office for these formats during this century. XLS and XLSX are the most used and well-known formats of MS Excel spreadsheets.
