C# Programs — Event Handling

51 events exercise #47 Medium 52 events exercise #48 Medium 53 events exercise #49 Hard 54 events exercise #50 Medium 55 events exercise #51 Medium 56 events exercise #52 Hard 57 events exercise #53 Medium 58 events exercise #54 Medium 59 events exercise #55 Hard 60 events exercise #56 Medium 61 events exercise #57 Medium 62 events exercise #58 Hard 63 events exercise #59 Medium 64 events exercise #60 Medium 65 events exercise #61 Hard 66 events exercise #62 Medium 67 events exercise #63 Medium