how to Search the ListBox and del listbox all txt other than found txt and 3 lin below it in vb.net ?
ex

listboxbox contain txt from a file

http://www.yahpoo.com/


com
com

www.yahoo
yahoo1
yahoo3
yahoo


after button Click listbox shold contain

www.yahoo
yahoo1
yahoo3
yahoo

www.yahoo and lin below that.

buddy your question is vague along with your other questions, i can't figure out what you want.
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