![]() ![]() Having said all of that, this C# library is golden. You can look at the GenerateStyleSheet() function in my library to see how I've done this, and feel free to customize its apparence, fonts and colors, as desired. On each worksheet, I set the header text to a different style.Without this functionality, you would be receiving out-of-memory errors when trying to create large Excel files. This has a huge advantage that, when you're creating massive Excel files, it won't wait until it has created all of the elements for your Excel file before writing it all out to the file. My library creates the file using OpenXmlWriter.Because the Excel file is created using Microsoft's free OpenXML library, you can run this code on machines which don't have Excel installed.This is how Excel stores such data itself. For example, if you have a DateTime column, it will write your data value to the Excel file as a number, and apply a style to show it as a date. It will look at your types of data, and attempt to set the correct Excel cell styles.Oh, and it will create one worksheet per DataTable in your DataSet.Ī few nice things about this library though: You can either go and buy a third-party library, or take the code which I've provided, and use it as a basis to create your own customized library.Īs you'll see, this C# library simply takes a chunk of data stored in a DataSet, DataTable, or List, and outputs it to an Excel. If you're looking for a library where you can export things like images, diagrams, and pivot tables to an Excel file, then this isn't the right place for you. MessageBox.Show( " Couldn't create Excel file.\r\nException: " + ex.Message) ĭon't get me wrong - this C# library is absolutely bare-bones. String excelFilename = " C:\\Sample.xlsx" ĬreateExcelFile.CreateExcelDocument(ds, excelFilename) Step 1: Create a DataSet, and put some sample data in it ![]()
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