如何捕获一个 int

我正在使用 IL 抛出一个 Int32 并捕获它。这只是出于好奇，我并没有试图实现任何目标，所以请不要告诉我抛出异常而不是 int。

.method private hidebysig static void  Main(string[] args) cil managed
{
  .entrypoint
  // Code size       40 (0x28)
  .maxstack  2
  .locals init (object V_0,
       int32 V_1)
  IL_0000:  nop
  .try
  {
    IL_0001:  nop
    IL_0002:  ldsfld     int32 ConsoleApplication3.Program::i
    IL_0007:  throw
  }  // end .try
  catch [mscorlib]System.Object 
  {
    IL_0008:  stloc.0
    IL_0009:  nop
    IL_000a:  ldstr      "In Object catch"
    IL_000f:  call       void [mscorlib]System.Console::WriteLine(string)
    IL_0014:  nop
    IL_0015:  ldloc.0
    IL_0016:  unbox.any  [mscorlib]System.Int32
    IL_001b:  stloc.1
    IL_001c:  ldloc.1
    IL_001d:  call       void [mscorlib]System.Console::WriteLine(int32)
    IL_0022:  nop
    IL_0023:  nop
    IL_0024:  leave.s    IL_0026
  }  // end handler
  IL_0026:  nop
  IL_0027:  ret
} // end of method Program::Main

这不起作用，我得到字符串“In Object catch”，但是当我尝试拆箱时，我得到一个 System.InvalidCastException：指定的强制转换无效。 我怎样才能得到抛出的东西的价值？

In version 2.0 of the CLR, when a non–CLS-compliant exception is thrown, the CLR automatically constructs an instance of the RuntimeWrappedException class and initializes its private field to refer to the object that was actually thrown. In effect, the CLR now turns all non–CLS-compliant exceptions into CLS-compliant exceptions.

try
{
    // ...
}
catch (RuntimeWrappedException e)
{
    int a = (int)e.WrappedException;
}