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    <p>I compiled your code and load it up in ILDASM and got this</p> <pre><code>.method public hidebysig specialname rtspecialname instance void .ctor() cil managed { // Code size 15 (0xf) .maxstack 8 IL_0000: ldarg.0 IL_0001: ldc.i4.7 IL_0002: stfld int32 dummyCSharp.MyClass::myInt IL_0007: ldarg.0 IL_0008: call instance void [mscorlib]System.Object::.ctor() IL_000d: nop IL_000e: ret } // end of method MyClass::.ctor </code></pre> <p>Note the <code>ldc.i4.7</code> and <code>stfld int32 dummyCSharp.MyClass::myInt</code> seems to be instructions to set the default values for the myInt field.</p> <p><strong>So such assignment is actually compiled as an additional assignment statement in a constructor.</strong></p> <p>To detect such assignment, then you will need reflection to reflect on the IL of MyClass's constructor method and look for <code>stfld</code> (set fields?) commands.</p> <hr> <p>EDIT: If I add some assignment into the constructor explicitly:</p> <pre><code>class MyClass { public int myInt = 7; public int myOtherInt; public MyClass() { myOtherInt = 8; } } </code></pre> <p>When I load it up in ILDASM, I got this: </p> <pre><code>.method public hidebysig specialname rtspecialname instance void .ctor() cil managed { // Code size 24 (0x18) .maxstack 8 IL_0000: ldarg.0 IL_0001: ldc.i4.7 IL_0002: stfld int32 dummyCSharp.MyClass::myInt IL_0007: ldarg.0 IL_0008: call instance void [mscorlib]System.Object::.ctor() IL_000d: nop IL_000e: nop IL_000f: ldarg.0 IL_0010: ldc.i4.8 IL_0011: stfld int32 dummyCSharp.MyClass::myOtherInt IL_0016: nop IL_0017: ret } // end of method MyClass::.ctor </code></pre> <p>Note that the extra assigment on myOtherInt that I added was addded <em>after</em> a call the Object class's constructor.</p> <pre><code>IL_0008: call instance void [mscorlib]System.Object::.ctor() </code></pre> <p>So there you have it,</p> <p><strong>Any assignment done <em>before</em> the call to Object class's constructor in IL is a default value assignment.</strong></p> <p>Anything following it is a statement inside the class's actual constructor code.</p> <p>More extensive test should be done though.</p> <p>p.s. that was fun :-)</p>
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    1. CONasty, but could be something in this - thanks. Will have to look deeper (I haven't done any reflection on IL as yet).
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    2. COResponding to your update: Cool - looks even more well defined.
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    3. COI supposed got too much time on my hands. Gotta get to work haha.
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