The phrase "affection with which" is correct and usable in written English.
It can be used to describe the manner or intensity of affection someone has towards another person or thing.
Example: "The affection with which she spoke about her childhood home was evident in her voice."
Alternatives: "the love with which" or "the fondness with which".
The admiration and affection with which Iranians hold Japan should encourage Tokyo's greater engagement.
In a sign of the affection with which Afghanis looked back to his long and peaceful reign, some members of the assembly spoke of restoring the monarchy.
Diaz believed in the essential goodness of children, and the consequent humour and affection with which she treated her characters accounted for her popularity.
The intense sympathy and affection with which Ackroyd tells the city's story suggests that his reaction to the place is not dissimilar to Lamb's.
They had no control over their teenage son, were unable to feed or clothe him or pull those little levers of promise and affection with which parents negotiate domestic life with their children.
A measure of the affection with which Pixar is regarded can be found in the online outrage which greeted a venomous review of Toy Story 3 by the New York Press critic, Armond White.
It is however, a testament to the "respect and even affection" (Gibb) with which Nasr was regarded by the native population in Transoxiana, that in contrast to Khurasan no native city there welcomed the Hashimi missionaries, and that they remained loyal to him even during the later Abbasid Revolution.
This says much about Signor Petrini's gifts as a speaker - he isn't one to let the complete absence of English get in the way of communication - and the affection and regard with which he is held.
Somehow with all the duties he's taken on, Epstein has lost sight of the affection and awe with which Hal regards Falstaff in the earlier Henry IV Part I scenes.
The combination of affection and goggling outrage with which Jarrell paints his subjects is endearing, as well as painfully funny.
Prosecution psychiatrists testified at the trial that he had no delusions about Miss Foster because he never really believed that she would feel love or affection for him, a position with which the letter appears inconsistent.
