Perfect solution to exclude datasets that do not support system.nullable errors

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Data;usingSystem.Reflection;usingYto. Weixin.model;usingSystem.Collections;namespaceYto. weixin.core{ Public classlisttodatatable { Public StaticDataTable todatatable<t> (ilist<t>list) {            returnTodatatable (list,NULL); }        //Convert list to DataTable         Public StaticDataTable todatatable<t> (ilist<t> list,params string[] PropertyName) {List<string> propertynamelist =Newlist<string>(); if(PropertyName! =NULL) {Propertynamelist.addrange (propertyname); } DataTable result=NewDataTable (); if(list. Count >0) {propertyinfo[] propertys= list[0]. GetType ().                GetProperties (); foreach(PropertyInfo Piinchpropertys) {                    if(Propertynamelist.count = =0)                    {                        //if (DBNull.Value.Equals (PI). PropertyType))//{                        //   //Pi.                        PropertyType = DateTime; //}                        Type coltype = pi.                        PropertyType;                        if (Coltype.isgenerictype && coltype.getgenerictypedefinition () = = typeof (Nullable<>)) {Coltype = coltype.getgenericarguments () [0]; } result. Columns.Add (pi.                        Name,coltype); //result. Columns.Add (pi. Name, Pi. PropertyType);                    }                    Else                    {                        if(Propertynamelist.contains (PI). Name) {result. Columns.Add (pi. Name, Pi.                        PropertyType); }                    }                }                 for(inti =0; I < list. Count; i++) {ArrayList templist=NewArrayList (); foreach(PropertyInfo Piinchpropertys) {                        if(Propertynamelist.count = =0)                        {                            Objectobj = pi. GetValue (List[i],NULL);                        Templist.add (obj); }                        Else                        {                            if(Propertynamelist.contains (PI). Name)) {Objectobj = pi. GetValue (List[i],NULL);                            Templist.add (obj); }                        }                    }                    Object[] Array =Templist.toarray (); Result. Loaddatarow (Array,true); }            }            returnresult; }

Perfect solution to exclude datasets that do not support system.nullable errors