如果我在反射檢查FieldInfo.SetValueDirect
它看起來如下:一個方法如何只包含一個NotImplementedException並且仍然不會拋出?
C#.NET 4.0:
[CLSCompliant(false)]
public virtual void SetValueDirect(TypedReference obj, object value)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_AbstractNonCLS"));
}
而作爲IL:
.method public hidebysig newslot virtual instance void SetValueDirect(valuetype System.TypedReference obj, object 'value') cil managed
{
.custom instance void System.CLSCompliantAttribute::.ctor(bool) = { bool(false) }
.maxstack 8
L_0000: ldstr "NotSupported_AbstractNonCLS"
L_0005: call string System.Environment::GetResourceString(string)
L_000a: newobj instance void System.NotSupportedException::.ctor(string)
L_000f: throw
}
但是,如果我運行下面的代碼它只是工作。
// test struct:
public struct TestFields
{
public int MaxValue;
public Guid SomeGuid; // req for MakeTypeRef, which doesn't like primitives
}
[Test]
public void SettingFieldThroughSetValueDirect()
{
TestFields testValue = new TestFields { MaxValue = 1234 };
FieldInfo info = testValue.GetType().GetField("MaxValue");
Assert.IsNotNull(info);
// TestFields.SomeGuid exists as a field
TypedReference reference = TypedReference.MakeTypedReference(
testValue,
new [] { fields.GetType().GetField("SomeGuid") });
int value = (int)info.GetValueDirect(reference,);
info.SetValueDirect(reference, 4096);
// assert that this actually worked
Assert.AreEqual(4096, fields.MaxValue);
}
沒有錯誤發生。 GetValueDirect
也是如此。基於資源名稱的猜測是,只有當代碼必須是CLSCompliant時,纔會拋出此錯誤,但方法的主體在哪裏?或者換一種說法,我怎樣才能反映該方法的實際情況?
Jon比平常要快,但你的結論等於他的;)。 – Abel 2012-03-29 14:37:32