c# - 许多方法的捕获代码相同

Question

我有几个 C# 方法要包装在 try-catch block 中。每个函数都将具有相同的捕获逻辑。有没有一种优雅的方法可以为这些函数中的每一个添加一个装饰器，以便它们都被同一个 try/catch block 包裹？我不想将 try/catch block 添加到所有这些函数。

例子:

public void Function1(){
   try {
     do something
   }catch(Exception e) {
      //a BUNCH of logic that is the same for all functions
   }
}

public void Function2() {
   try {
     do something different
   }catch(Exception e) {
      //a BUNCH of logic that is the same for all functions
   }
}

Answer 1

对此有一些功能性的解决方案吗？请注意，我没有吞下异常并使用 throw; 语句，这将重新抛出异常并保持其原始堆栈跟踪。不要默默地吞下异常——这被认为是一种非常糟糕的做法，调试代码会变得很糟糕。

void Main()
{
    WrapFunctionCall( () => DoSomething(5));
    WrapFunctionCall( () => DoSomethingDifferent("tyto", 4));
}

public void DoSomething(int v){ /* logic */}

public void DoSomethingDifferent(string v, int val){ /* another logic */}

public void WrapFunctionCall(Action function) 
{
    try
    {
        function();
    }
    catch(Exception e)
    {
         //a BUNCH of logic that is the same for all functions
         throw;
    }
}

---

如果你需要返回一些值，WrapFunctionCall 方法的签名会改变

void Main()
{
    var result = WrapFunctionCallWithReturn( () => DoSomething(5));
    var differentResult = WrapFunctionCallWithReturn( () => DoSomethingDifferent("tyto", 4));
}

public int DoSomething(int v){ return 0; }

public string DoSomethingDifferent(string v, int val){ return "tyto"; }

public T WrapFunctionCallWithReturn<T>(Func<T> function) 
{
    try
    {
        return function();
    }
    catch(Exception e)
    {
        //a BUNCH of logic that is the same for all functions
        throw;
    }
}