2.C#中通过委托Func消除重复代码

阅读目录
   一：重复的代码

　二：C#中通过委托Func消除重复代码

   一：重复代码
   

public class Persion
    {
        public string Name { get; set; }
        public int Age { get; set; }

        public Persion GetPersionInfo()
        {
            try
            {
                Persion persion = new Persion();
                persion.Name = "David";
                persion.Age = 30;

                return persion;
            }
            catch (Exception ex)
            {
                return null;
            }           
        }
    }

 public class Employee
    {
        public string Post { get; set; }
        public int Salary { get; set; }

        public Employee GetEmployeeInfo()
        {
            try
            {
                Employee employee = new Employee();
                employee.Post = "开发";
                employee.Salary = 5000;

                return employee;
            }
            catch(Exception ex)
            {
                return null;
            }
        }
    }

　　二：C#中通过委托Func消除重复代码
     如下所示，try catch 语句只有一次了，这样就消除了GetPersionInfo方法和GetEmployeeInfo的try catch语句

public class Utillity
    {
        public static T TryExecute<T>(Func<T> func, string methodName)
        {
            try
            {
                return func();
            }
            catch (Exception ex)
            {
                Console.WriteLine("MethodName:" + methodName + " Error:" + ex.Message);
                return default(T);
            }
        }
    }

public class Persion
    {
        public string Name { get; set; }
        public int Age { get; set; }

        public Persion GetPersionInfo()
        {
            return Utillity.TryExecute<Persion>(() =>
            {
                Persion persion = new Persion();
                persion.Name = "David";
                persion.Age = 30;

                return persion;
            }
            , "GetPersionInfo");
        }
    }

public class Employee
    {
        public string Post { get; set; }
        public int Salary { get; set; }

        public Employee GetEmployeeInfo()
        {
            return Utillity.TryExecute(() =>
            {
                Employee employee = new Employee();
                employee.Post = "开发";
                employee.Salary = 5000;

                return employee;
            }
            , "GetEmployeeInfo");

        }
    }

 class Program
    {
        static void Main(string[] args)
        {
            Persion persion1 = new Persion();
            Persion persion2 = persion1.GetPersionInfo();

            Console.WriteLine("This persion name is {0}", persion2.Name);
            Console.WriteLine("This persion age is {0}", persion2.Age);

            Employee employee1 = new Employee();
            Employee employee2 = employee1.GetEmployeeInfo();

            Console.WriteLine("This employee post is {0}", employee2.Post);
            Console.WriteLine("This employee salary is {0}", employee2.Salary);

            Console.ReadLine();
        }
    }