Question

Is there any way to embed a widget in a data-bound DataGridViewCell when it is not in editing mode?

For example, we are wanting to display an existing calendar widget in a cell. That cell contains a comma separated list of dates. We want to show the calendar instead of the text.

We could create a custom cell and override the Draw method so that it draws the calendar in the cell, but that would not handle the mouse-over tool-tip that we already have in the existing calendar widget.

[Update] I tried TcKs’s suggestion, but was not able to create a working solution. See the comments on that answer.

Answer 1

You should derive your own type from DataGridViewColumn (e.g. a DataGridViewCalendarColumn) and return a DataGridViewCalendarCell (that you have to create yourself, too) as the CellTemplate.
A detailed description can be found in the MSDN article Build a Custom RadioButton Cell and Column for the DataGridView Control