redirect - C# enter key leads to master page -

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i have file named fiche.aspx tied master page.

in master page there button click calculete_somehing.

when pull fiche.aspx , press enter on keyboard, runs calculete_somehing method in master page.

why happen?

how can associate button event click enter key press?

this code can handle enter keypress on page:

$(document).keypress(function(e) {   if(e.which == 13) {    // enter pressed , u can call click function     $('.calculete_somehing').click();    } });