Parameters
- rowIndex
- colIndex
If the specified cell doesn't exist when the indexer is invoked, the sheet will be expanded and a new cell will be created, then returned. This makes it easy to create and populate sheets.
If you want to determine whether a specific cell has been defined, use the GetCell method instead.
The indexer is generally more useful when creating and populating sheets. The GetCell method is more useful when loading existing sheets.