Achieve bulk delete code behind

Batch Delete checkbox selected objects , select an individual when it was removed , is bulk delete multiple selected ! No idea , I do not know how to write the background . . Remove the single and bulk delete written in the same way in the good ? Or separately written ? Find code ~
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delete multiple direct support months , public int delete (List ids);
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a method returns an array in the past even
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id you want to delete the background of the package to the list , the then loop delete
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do not understand why the parentheses after preaching at List? Not so written . .
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do not understand why the parentheses after preaching at List? Not so written . .  
you is to write code behind , right ? Code behind it is not your own control ?

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background writing method . loop through your ID is not passed in just fine. ~ ~ ~ Pass a deleted one . More will cycle way.