In ASP.NET you have sometimes a problem. When you have several inputs (textboxes) and several buttons. You want user to submit it by hitting enter. For example one login box, one search box. You want to submit login box when user hits enter in password field, and search button when user hits enter in search field. The solution is easy! Just put controls inside the asp:panel with attribute DefaultButton="ButtonFind"  ( where ButtonFind is ID of desired default button ). That's all! It works!