public class ListToDatatable
 {
     public static DataTable ToDataTable <T> (List <T> items)
     {
         var tb = new DataTable(typeof(T).Name);

         PropertyInfo[] props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);

         foreach(PropertyInfo prop in props)
         {
             Type t = GetCoreType(prop.PropertyType);
             tb.Columns.Add(prop.Name, t);
         }

         foreach(T item in items)
         {
             var values = new object[props.Length];

             ; i < props.Length; i++)
             {
                 values[i] = props[i].GetValue(item, null);
             }

             tb.Rows.Add(values);
         }

         return tb;
     }

     public static bool IsNullable(Type t)
     {
         return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable < > ));
     }

     public static Type GetCoreType(Type t)
     {
         if (t != null && IsNullable(t))
         {
             if (!t.IsValueType)
             {
                 return t;
             } else {
                 return Nullable.GetUnderlyingType(t);
             }
         } else {
             return t;
         }
     }
 }