Search box threw column in datagridview by words

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C#

Hello,

I need some help, and I know I ask to much, but I have a datagridview populated with binding source, a textbox and the button. let's say I have 100 rows in datagridview with 5 column, and one column is for filtering threw textbox that I mentioned. so when I type in text in that textbox, then click on button it filteres rows . but what I want is to type in that textbox any word or words from the text that exists in the cells of that column, and it filteres again. something like any search box in web broser. I am totaly stuck, dont know how to even start the code, I tried some things but nothing

thanks