c# - 声明了变量 'MyException' 但从未使用过

Question

我需要清除这个警告:

try
{
    doSomething()
}
catch (AmbiguousMatchException MyException)
{
    doSomethingElse()
}

编译器告诉我:

The variable 'MyException' is declared but never used

我该如何解决这个问题。

Answer 1

1. 你可以像这样删除它:

   try
   {
       doSomething()
   }
   catch (AmbiguousMatchException)
   {
       doSomethingElse()
   }
   

2. 像这样使用警告禁用:

   try
   {
       doSomething()
   }
   #pragma warning disable 0168
   catch (AmbiguousMatchException exception)
   #pragma warning restore 0168
   {
       doSomethingElse()
   }
   

其他熟悉的警告禁用

#pragma warning disable 0168 // variable declared but not used.
#pragma warning disable 0219 // variable assigned but not used.
#pragma warning disable 0414 // private field assigned but not used.