c# - 为什么代码会生成称为<> c__DisplayClass1的MSIL类

我有这个密码，private bool MatchingBreak(IEnumerable<CarriagewaySummary> breaks, int startMetres, int divisionPosition) { CarriagewaySummary matchingBreak = breaks.Where(x => { return x.StartMetres == startMetres && x.EndMetres == divisionPosition; }).SingleOrDefault(); return matchingBreak != null; }为什么会在msil中生成一个名为cdisplayclas1的嵌套类？.class nested private auto ansi sealed beforefieldinit <>c__DisplayClass1extends object{.custom instance void [mscorlib]System.Runtime.CompilerServices.CompilerGeneratedAttribute::.ctor() = ( 01 00 00 00)// Fields.field public int32 startMetres.field public int32 divisionPosition// Methods.method public hidebysig specialname rtspecialname instance void .ctor () cil managed{ // Method begins at RVA 0x56fb // Code size 7 (0x7) .maxstack 8 IL_0000: ldarg.0 IL_0001: call instance void object::.ctor() IL_0006: ret} // End of method <>c__DisplayClass1..ctor.method public hidebysig instance bool <MatchingBreak>b__0 ( class TreatmentLengthDynamicSegmentation.Domain.CarriagewaySummary x ) cil managed{ // Method begins at RVA 0x5704 // Code size 37 (0x25) .maxstack 2 .locals init ( [0] bool ) IL_0000: nop IL_0001: ldarg.1 IL_0002: callvirt instance int32 TreatmentLengthDynamicSegmentation.Domain.CarriagewaySummary::get_StartMetres() IL_0007: ldarg.0 IL_0008: ldfld int32 class TreatmentLengthDynamicSegmentation.ScriptHelpers.DivisionManager/<>c__DisplayClass1::startMetres IL_000d: bne.un.s IL_001f IL_000f: ldarg.1 IL_0010: callvirt instance int32 TreatmentLengthDynamicSegmentation.Domain.CarriagewaySummary::get_EndMetres() IL_0015: ldarg.0 IL_0016: ldfld int32 class TreatmentLengthDynamicSegmentation.ScriptHelpers.DivisionManager/<>c__DisplayClass1::divisionPosition IL_001b: ceq IL_001d: br.s IL_0020 IL_001f: ldc.i4.0 IL_0020: stloc.0 IL_0021: br.s IL_0023 IL_0023: ldloc.0 IL_0024: ret} // End of method <>c__DisplayClass1.<MatchingBreak>b__0} // End of class TreatmentLengthDynamicSegmentation.ScriptHelpers.DivisionManager/<>c__DisplayClass1生成的代码干扰了nitriq代码分析，所以我想了解它为什么会在那里。 最佳答案 如果在lambda中使用局部变量，则它必须位于堆中。lambda可以在创建它的函数之后使用。当函数退出时，正常的局部变量（在堆栈/寄存器上生存）变得无效，因此不能在这里使用。所以C编译器创建一个类来保存捕获的局部变量。你看到的就是这个。请注意，c捕获的是实际变量，而不是其当前值。所以在概念上它是通过引用来捕获的。捕获的语义意味着编译器需要为每个作用域创建一个容器对象。http://csharpindepth.com/Articles/Chapter5/Closures.aspx在你的代码中x => { return x.StartMetres == startMetres && x.EndMetres == divisionPosition; }lambda使用startMetres和divisionPosition，因此它们都被捕获并放入该嵌套类中。关于c# - 为什么代码会生成称为<> c__DisplayClass1的MSIL类，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/6013094/