I have created a custom control which I call a RichTextBoxMasked which works like a MaskedTextBox with the added feature, among many others, of allowing multiple lines in the text. Now I want to create a "DataGridViewRichTextBoxMaskedColumn" for a DataGridView, but I don't know where to begin. Do I need to create a DataGridViewRichTextTextBoxMaskedCell?
Rob E.