Flags in Flags conditional check.

Hello, I have just began learning flags, and I wanted to know how to check if set of Flags A has any contents of Flags B.

Example

[Flags]
public enum FlagCategory
{
    None = 0,
    A = 1 << 0,
    B = 1 << 1,
    C = 1 << 2,
    All = ~0
}

public bool HasAnyFlag(FlagCategory flagA, FlagCategory flagB)
{
    if (/*if set flagA has any flags of set flagB*/)
    {
        return true;
    }
    return false;
}

Thank you.

Solved with looping through each selected enum, and checking if flags.HasFlags(activeFlag).

bool doHave = false;
// Loop through entire available enum values of FlagCategory.
foreach (FlagCategory f in Enum.GetValues(typeof(FlagCategory)))
{
   // If flag is selected
   if (otherFlagCategory.HasFlag(f))
   {
      // If flags has a selected flag from otherFlagCategory
      if (_flags.Category.HasFlag(f))
      {
         doHave = true;
      }
   }
}
return doHave;

But if there is a better and more elegant/magical way, please do post here.
Thank you.