Would IsSubclassOf() work here?

  • Thread starter Thread starter Daniel Billingsley
  • Start date Start date
D

Daniel Billingsley

Given
classA {}
Type typeA = typeof(ClassA);

1) isn't

checkType.IsSubclassOf(typeA)

going to always give the same results as
typeInheritsFrom(checkType, typeA)
given
bool typeInheritsFrom(Type typeToCheck, Type checkAgainst)
{
Type baseType = typeToCheck;
while (baseType != null)
{
if(baseType == checkAgainst)
return true;
baseType = baseType.BaseType;
}
}

2) Wouldn't
if (baseType is checkAgainst)
be a little clearer in C# than
if (baseType == checkAgainst)
even though I think it would work out to the same result.
 
I was trying to write the original message too quickly I think -

I should have included the detail that checkType is always a class.
 
Daniel,
1) isn't

checkType.IsSubclassOf(typeA)

going to always give the same results as
typeInheritsFrom(checkType, typeA)
Click to expand...

Almost. typeInheritsFrom would return true for

typeInheritsFrom(typeof(ClassA), typeof(ClassA))

but

typeof(ClassA).IsSubclassOf(typeof(ClassA))

returns false.

2) Wouldn't
if (baseType is checkAgainst)
be a little clearer in C# than
if (baseType == checkAgainst)
even though I think it would work out to the same result.
Click to expand...

if (baseType is checkAgainst)

isn't valid code.



Mattias
 
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