c# - Trim spaces in a object recursively using reflection -

i writing extension method trimspaces on object recursively should able trim spaces. successful in trimming spaces first level object, however, unable same child objects.

as example, consider following class

public class employee {     public string employeeid { get; set; }     public string employeename { get; set; }     public datetime hiredate { get; set; }     public department employeedepartment { get; set; } }  public class department {     public int departmentid { get; set; }     public string departmentname { get; set; } } 

in above class able trim spaces employee class properties unable trim departmentname

here code have written

    public static t trimspaces<t>(this t obj)     {         var properties = obj.gettype()             .getproperties(bindingflags.instance | bindingflags.public)             .where(prop => prop.propertytype == typeof(string))             .where(prop => prop.canwrite && prop.canread);         foreach (var property in properties)         {             var value = (string)property.getvalue(obj, null);             if (value.hasvalue())             {                 var newvalue = (object)value.trim();                 property.setvalue(obj, newvalue, null);             }         }           var customtypes =             obj.gettype()                 .getproperties(bindingflags.instance | bindingflags.public)                 .where(                     prop =>                         !prop.gettype().isprimitive && prop.gettype().isclass &&                         !prop.propertytype.fullname.startswith("system"));          foreach (var customtype in customtypes)         {             ((object)customtype.getvalue(obj).gettype()).trimspaces();         }          return obj;     } 

when loop through properties, invoking line:

((object)customtype.getvalue(obj).gettype()).trimspaces();  

which invokes trimspaces passing type of object obj. instead should pass object self this:

((object)customtype.getvalue(obj)).trimspaces(); 

in case, cast object not needed, can have this:

customtype.getvalue(obj).trimspaces();