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
     
      (Func
      
        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
     
      (() => 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     }