Sentence The phrase "gain the affection" is correct but is not an idiom that is commonly used in written English.
Instead, you might use alternate phrases such as "earn someone's affections", "attract affection", or "win someone's affections". For example: He worked hard to gain the affection of his boss and was eventually promoted.
Sean McNall makes a dashing Captain Absolute, who is posing as a mere ensign to gain the affection of Lydia Languish.
Of course, it's not a bad strategy to have a bold-faced name remake a previously successful project, and it's a smart idea to gain the affection of TV fans who love cult comedies.
Personally abrasive, Davis did not seek (or gain) the affection of his fellow owners.
Across the world, countries large and small have been seeking to gain the affections of China as its economic might and diplomatic swagger become harder to ignore.
So desperate is Fred to gain the affections of the aloof temptress, Doris Walker, that he is soon sharing his bedroom with a delusional old man Doris schemed to employ as a department-store Santa Claus so as to ingratiate herself with her CEO.
In the dusty village squares of Chitrakoot, it has gained the affection of the local people as a paper that speaks in their voice.
At last he gained the affection of Oriental Jews – half of Israel's population – who had once seen him as an Ashkenazi elitist.
Eystein nonetheless gained the affection of his people, and was highly regarded by the saga writers for his deeds.
When she sneaks back onto the boat, she begins to attract many customers to the boat service as "Brownie the Famous Ship's Cat," gaining the affection of the captain.
The media historian Brian McFarlane writes that on film, Formby portrayed gormless Lancastrian innocents who would win through against some form of villainy, gaining the affection of an attractive middle-class girl in the process.
While his suits were the source of an incalculable number of jokes in NBA arenas — Kevin Garnett once hilariously told Sager to burn his clothes after a game in 2009 — they were essential to who Sager was and how he gained the affection of so many people involved with the NBA.
