How to display a custom control over the worksheet cell

This example demonstrates how to use the SpreadsheetControl.GetCellBounds method to display the ComboBox control over a worksheet cell preventing end-users from entering a wrong value in a cell. Each time an end-user clicks a cell in a particular column, the ComboBox appears, allowing the user to select one of the predefined values.

Starting from v16.1, this method of supplying custom cell editors is outdated. For details and an updated example, refer to How to: Assign Custom In-Place Editors to Worksheet Cells.