c# - Unable to ChangeType from string to int? -

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this question has answer here:

in depths of our application there attempt perform conversion string nullable int convert.changetype(value, casttype). in case values follows:

value: "00010" casttype: nullable<system.int16>

the issue receiving following error 

invalid cast 'system.string' 'system.nullable`1[[system.int16}

i had (obviously incorrectly) believed similar cast or convert.toint16() i've verified it's not same testing following 2 lines of code.

int16 t = convert.toint16("00010"); object w = convert.changetype("00010", typeof(short?));

as might suspect, first succeeds whereas second fails error message above.

is possible use changetype in fashion making adjustment or should @ refactor?

you'll need write this:

var value = "00010"; short? w = value == null ? null : (short?)convert.changetype("00010", typeof(short));

changetype not work nullable<t> - , if have value value, assume have value converted type


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