Question

One version is

short value = unchecked((short)0x8010);

Other versions like below will not work, and will throw an exceptions

short value = Convert.ToInt16(0x8010);
short value = (short)(0x8010);

Is there any other version without unchecked keyword?

Updated: expected is negative value of -32752

Answer 1

The following will work to convert all ushort values which fit into short and replace all values which don’t with short.MaxValue. This is lossy conversion though.

ushort source = ...;
short value = source > (ushort)short.MaxValue
  ? short.MaxValue
  : (short)source;

If you are looking for a straight bit conversion you can do the following (but I wouldn’t recommend it)

[StructLayout(LayoutKind.Explicit)]
struct EvilConverter
{
    [FieldOffset(0)] short ShortValue;
    [FieldOffset(0)] ushort UShortValue;

    public static short Convert(ushort source)
    {
        var converter = new EvilConverter();
        converter.UShortValue = source;
        return converter.ShortValue;
    }
}