How to compare 2 similar types in C# -

i want ask how compare 2 types in c#.

my scenario is:

nullable<int> rating; int needcomparetype; 

every time compare these two, return false result. there anyway me return true in case because int type have in both lines.

my compare line is:

if(rating.gettype() == needcomparetype.gettype()) 

edit: program code:

    public object this[string propertyname]     {                 {             propertyinfo property = gettype().getproperty(propertyname);             return property.getvalue(this, null);         }         set         {             propertyinfo property = gettype().getproperty(propertyname);             iformatprovider culture = new system.globalization.cultureinfo("fr-fr", true);             if (property.propertytype == typeof(system.datetime))             {                 property.setvalue(this, convert.todatetime(value, culture), null);             }             else if (property.propertytype == typeof(int))             {                 property.setvalue(this, int32.parse((string)value));             }             else             {                 property.setvalue(this, value, null);             }          }     } 

the aim of code cast value controller receive browser string type, want convert string type proper type of unknown yet property of model (in case public nullable<int> rating { get; set; }).

as know want when propertyname = "rating", should execute 2nd if statement, not because typeof(int) , typeof(nullable<int>) different.

sorry bad english

actually, line:

if(rating.gettype() == needcomparetype.gettype()) 

would either go condition, or throw nullreferenceexception - because rating.gettype() box rating either boxed int32 or null reference.

now if you're saying want compare typeof(int) , typeof(nullable<int>) use:

public bool somewhatequal(type t1, type t2) {     return t1 == t2 ||            t1 == nullable.getunderlyingtype(t2) ||            nullable.getunderlyingtype(t1) == t2; } 

now we've seen code you're interested in, sounds want treat each property nullable type if non-nullable. that's easy:

set {     propertyinfo property = gettype().getproperty(propertyname);     type type = property.gettype();     // treat nullable types underlying types.     type = nullable.getunderlyingtype(type) ?? type;     // todo: move static readonly field. no need     // create new 1 each time     iformatprovider culture = new cultureinfo("fr-fr", true);     if (type == typeof(system.datetime))     {         property.setvalue(this, convert.todatetime(value, culture), null);     }     else if (type == typeof(int))     {         property.setvalue(this, int32.parse((string)value));     }     else     {         property.setvalue(this, value, null);     } }