C# 中的链式异常

链接异常是一系列处理异常的try-catch语句。要创建异常链，即链接异常−

设置第一个try-catch −

示例

static void Main(string[] args) {
   try {
      One();
   } catch (Exception e) {
      Console.WriteLine(e);
   }
}

现在在方法One()下尝试使用try-catch −

示例

static void One() {
   try {
      Two();
   } catch (Exception e) {
      throw new Exception("First exception!", e);
   }
}

方法Two()还会继续链式异常。

示例

static void Two() {
   try {
      Three();
   } catch (Exception e) {
      throw new Exception("Second Exception!", e);
   }
}

现在是下一个方法。

示例

static void Three() {
   try {
      Last();
   } catch (Exception e) {
      throw new Exception("Third Exception!", e);
   }
}

The takes us to the last.

Example

static void Last() {
   throw new Exception("Last exception!");
}

在运行上述代码时，异常会被处理如下 −

System.Exception: First exception! ---< System.Exception: Middle Exception! ---< System.Exception: Last exception!
at Demo.Two () [0x00000] in <199744cb72714131b4f5995ddd1a021f>:0
--- End of inner exception stack trace ---
at Demo.Two () [0x00016] in <199744cb72714131b4f5995ddd1a021f>:0
at Demo.One () [0x00000] in <199744cb72714131b4f5995ddd1a021f>:0
--- End of inner exception stack trace ---
at Demo.One () [0x00016] in <199744cb72714131b4f5995ddd1a021f>:0
at Demo.Main (System.String[] args) [0x00000] in <199744cb72714131b4f5995ddd1a021f>:0

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