Asp.net default enter button settings

Actually, I have been exposed to how to set the default enter button on the asp.net page early on, but I didn't record it at the time. I encountered it again today. I couldn't find it after searching through the information, and I couldn't solve it according to the methods on the Internet. It was so painful.

I believe everyone knows the online method. It’s nothing more than setting the following js code on the aspx page:

                                                                                                                                                                                               if (event.keyCode == 13) {
                                                                                                                                                                                               But this code for me, if the button is an ImageButton , this code can be used; if the button is a Button, this code will not work. I tried it for a long time without success, and I was very puzzled. Later, I took a look online and saw a question about button id. Then I was thinking, is there something wrong with the button ID? The id must have changed after being compiled.

                                                                                                            Finally, I used the browser to browse the page where the default enter button needs to be set, checked the source code, found the id of the button, copied it, it is a long section, similar to ctl00_ContentPlaceHolder1_Button1, replaced this with the button id in the js code, and ran Page, press Enter, it’s normal.