编译器错误 C2715

“type”：无法引发或捕捉此类型

在托管代码中使用异常处理时，值类型不是有效参数（有关详细信息，请参阅异常处理）。

// C2715a.cpp
// compile with: /clr
using namespace System;

value struct V {
   int i;
};

void f1() {
   V v;
   v.i = 10;
   throw v;   // C2715
   // try the following line instead
   // throw ((V^)v);
}

int main() {
   try {
      f1();
   }

   catch(V v) { if ( v.i == 10 ) {   // C2715
   // try the following line instead
   // catch(V^ pv) { if ( pv->i == 10 ) {
         Console::WriteLine("caught 10 - looks OK");
      }
      else {
         Console::WriteLine("catch looks bad");
      }
   }
   catch(...) {
      Console::WriteLine("catch looks REALLY bad");
   }
}