insert text between 2 controls

I want insert ":" between 2 dropdownlist in a cell.

tableCell.Controls.Add(DropDownListOraInizio);            
tableCell.Controls.Add(Dr开发者_开发技巧opDownListMinutoInizio);

How can i do?

thanks

tableCell.Controls.Add(DropDownListOraInizio);    
tableCell.Controls.Add(new LiteralControl(":"));      
tableCell.Controls.Add(DropDownListMinutoInizio);