Reflection: determining whether Type of field is signed or unsigned

[Laszlo Szijarto]

Using reflection, I am iterating through an array of FieldInfo objects and
wish to determine whether any given field represents a signed or an unsigned
variable (makes a difference in terms of how I parse some data from a raw
byte stream).

Is there anyway to determine whether a particular field is signed or
unsigned either from a FieldInfo object or else from a Type object stored in
fieldInfo.FieldType property?

Thank you very much for your help,
Laszlo

[Mattias Sjögren]

Laszlo,

Is there anyway to determine whether a particular field is signed or
unsigned either from a FieldInfo object or else from a Type object stored in
fieldInfo.FieldType property?

Since the set of integer types is limited, I guess the easiest way
would be to do

Type t = fieldInfo.FieldType:
if ( t == typeof(sbyte) || t == typeof(short) ||
t == typeof(int) || t == typeof(long) )
// it's signed
else if ( t == typeof(byte) || t == typeof(ushort) ||
t == typeof(uint) || t == typeof(ulong) )
// it's unsigned
else
// it's not an integer

Mattias

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Mattias Sjögren [MVP] mattias @ mvps.org
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[Laszlo Szijarto]

Thanks, Mattias,

that should work. Of course I was hoping for some kind of easy IsSigned
property.

Thank you,
Laszlo