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
1 public class Persion
2 {
3 public string Name { get; set; }
4 public int Age { get; set; }
5
6 public Persion GetPersionInfo()
7 {
8 try
9 {
10 Persion persion = new Persion();
11 persion.Name = "David";
12 persion.Age = 30;
13
14 return persion;
15 }
16 catch (Exception ex)
17 {
18 return null;
19 }
20 }
21 }
1 public class Employee
2 {
3 public string Post { get; set; }
4 public int Salary { get; set; }
5
6 public Employee GetEmployeeInfo()
7 {
8 try
9 {
10 Employee employee = new Employee();
11 employee.Post = "开发";
12 employee.Salary = 5000;
13
14 return employee;
15 }
16 catch(Exception ex)
17 {
18 return null;
19 }
20 }
21 }
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
1 public class Utillity
2 {
3 public static T TryExecute<T>(Func<T> func, string methodName)
4 {
5 try
6 {
7 return func();
8 }
9 catch (Exception ex)
10 {
11 Console.WriteLine("MethodName:" + methodName + " Error:" + ex.Message);
12 return default(T);
13 }
14 }
15 }
1 public class Persion
2 {
3 public string Name { get; set; }
4 public int Age { get; set; }
5
6 public Persion GetPersionInfo()
7 {
8 return Utillity.TryExecute<Persion>(() =>
9 {
10 Persion persion = new Persion();
11 persion.Name = "David";
12 persion.Age = 30;
13
14 return persion;
15 }
16 , "GetPersionInfo");
17 }
18 }
1 public class Employee
2 {
3 public string Post { get; set; }
4 public int Salary { get; set; }
5
6 public Employee GetEmployeeInfo()
7 {
8 return Utillity.TryExecute(() =>
9 {
10 Employee employee = new Employee();
11 employee.Post = "开发";
12 employee.Salary = 5000;
13
14 return employee;
15 }
16 , "GetEmployeeInfo");
17
18 }
19 }
1 class Program
2 {
3 static void Main(string[] args)
4 {
5 Persion persion1 = new Persion();
6 Persion persion2 = persion1.GetPersionInfo();
7
8 Console.WriteLine("This persion name is {0}", persion2.Name);
9 Console.WriteLine("This persion age is {0}", persion2.Age);
10
11 Employee employee1 = new Employee();
12 Employee employee2 = employee1.GetEmployeeInfo();
13
14 Console.WriteLine("This employee post is {0}", employee2.Post);
15 Console.WriteLine("This employee salary is {0}", employee2.Salary);
16
17 Console.ReadLine();
18 }
19 }