Tutorial by Topics: excel

Creating the data validation constraint can be tricky and time taking in NPOI. I have shared some of my workable approach. These approach will give good idea to customize your own constraint types.

Excel specifications and limits (Excel 2016-2013, Excel 2010, Excel 2007) Worksheet and workbook specifications and limits FeatureMaximum limitOpen workbooksLimited by available memory and system resourcesWorksheet size1,048,576 rows by 16,384 columnsColumn width255 charactersRow height40...

A frequent desire is to convert monthly data into quarterly data format. One simple method is to 1) sum the appropriate months into quarterly sums, then 2) identify those months as quarters, and finally 3) filter the quarterly data out of your monthly data. Here's a relatively quick and easy method ...