Enter key

Question

i have a textbox, when i typed text in textbox and press search button this works fine for searching, but if i typed something in textbox and press enter then click on search button it logging out. I want if i have typed something in textbox then presses enter and then clicked on search button it should work fine but it is not working. I dont want that pressing enter will submit data and give result except  i want press enter then clicked on button then work fine.