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Definition:            Basically delegate is list of the methods with same parameter Use:            When you have many method and you want to call all method at same time with same parameter then delegate is use . Delegate is use when method takes same parameter as argument and also returns same data type value. Example:             here in example there is two methods name ‘method1’ and ‘method2’ these both method take same argument and dose not return any value. How to declare: For use delegate keyword delegate is used first you have to declare the delegate like delegate void Mydelegate ( string mystring); This delegate which return type is void and take ne argument as string an delegate name is “Mydelegate” How To Use :              For use this delegate we make insta...