How to Compare Flags in C#?

Question

I have a flag enum below.

[Flags]
public enum FlagTest
{
    None = 0x0,
    Flag1 = 0x1,
    Flag2 = 0x2,
    Flag3 = 0x4
}

I cannot make

Answer 1

One more piece of advice... Never do the standard binary check with the flag whose value is "0". Your check on this flag will always be true.

[Flags]
public enum LevelOfDetail
{
    [EnumMember(Value = "FullInfo")]
    FullInfo=0,
    [EnumMember(Value = "BusinessData")]
    BusinessData=1
}

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If you binary check input parameter against FullInfo - you get:

detailLevel = LevelOfDetail.BusinessData;
bool bPRez = (detailLevel & LevelOfDetail.FullInfo) == LevelOfDetail.FullInfo;

bPRez will always be true as ANYTHING & 0 always == 0.

---

Instead you should simply check that the value of the input is 0:

bool bPRez = (detailLevel == LevelOfDetail.FullInfo);